Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
837
FNUS56 KPDT 172141
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
241 PM PDT Fri Oct 17 2025
.DISCUSSION...A wind advisory has been issued for Kittitas Valley.
Min RHs across the region are ranging between 30-40% with some
areas seeing over 45% mainly along the mid and upper elevations of
the Blues and eastern slopes. Breezy conditions will continue
through the Cascade Gaps and along the foothills of the Blues
through this afternoon. Saturday will see settles winds before
ramping up as another system pushes through Saturday night
bringing increased probabilities of precipitation and winds.
***Winds are 20 foot 10 minute averages***
***CWR-chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
transport wind multiplied by the mixing
height in 100`s of feet. Index categories
are a generalized indicator and users are
encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.***
Note: Max transport winds may not occur
at the same time as max mixing height.
WAZ695-181115-
East Washington South Central Cascade Mountains-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Widespread frost.
* Min temperature.....28-34.
* Max humidity........73-88 percent.
* Humidity recovery...Good...except Excellent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 5 to 11 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 6 to 12 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph becoming west around
5 mph after midnight.
* Ventilation Index...Poor (61-175) decreasing to poor (25-61)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly cloudy. Widespread frost in the
morning. A chance of rain and snow showers in the afternoon.
* Max temperature.....48-54...except 42-49 ridges.
* Min humidity........40-54 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......3000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-51) increasing to poor (31-119) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. Showers.
* Min temperature.....33-40.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 2 to 7 mph after midnight.
* Ridges/upr slopes....Southwest winds 4 to 9 mph.
* CWR.................90 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 10 to 15 mph.
* Ventilation Index...Poor (25-95) increasing to poor (25-162)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Rain and snow showers.
* Max temperature.....44-52...except 36-43 ridges.
* Min humidity........63-78 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph increasing to 9 to 15
mph in the afternoon.
* Ridges/upr slopes....West winds 8 to 14 mph.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 20 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (136-410) increasing to fair to
excellent (489-897) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy with a chance of rain and snow showers.
Widespread frost. Lows 31 to 37. Highs 43 to 55. West winds 5 to
11 mph.
.TUESDAY...Areas of frost. A chance of rain and snow showers.
Mostly cloudy. Lows 32 to 37. Highs 44 to 56. Terrain driven
winds less than 5 mph.
.WEDNESDAY...A slight chance of rain and snow showers. Partly
cloudy. Lows 31 to 36. Highs 47 to 57. Terrain driven winds less
than 5 mph.
.THURSDAY...Mostly cloudy with showers likely. Lows 35 to 40.
Highs 47 to 58. South winds 1 to 6 mph.
.FRIDAY...Showers likely and a slight chance of snow showers.
Lows 37 to 42. Highs 41 to 54. Southwest winds 2 to 7 mph.
$$
WAZ690-181115-
Kittitas Valley-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy frost after midnight.
* Min temperature.....31-38.
* Max humidity........73-88 percent...except 60-75 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 10 to 16 mph decreasing to 1
to 6 mph after midnight.
* Ridges/upr slopes....Northwest winds 12 to 18 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor to fair (88-200) decreasing to poor
(29-67) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of frost in the morning. A slight chance of showers in the
afternoon.
* Max temperature.....50-55...except 42-51 ridges.
* Min humidity........46-54 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......2500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-34) increasing to poor (49-83) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then showers likely after midnight.
* Min temperature.....38-44.
* Max humidity........79-94 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest 2 to 7 mph after midnight.
* CWR.................30 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-43) increasing to poor (25-55) after
midnight.
.SUNDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny. A
chance of showers.
* Max temperature.....53-61...except 44-55 ridges.
* Min humidity........46-59 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph increasing to 9 to 15
mph with gusts up to 30 mph in the afternoon.
* Ridges/upr slopes....West winds 8 to 14 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor (37-105) increasing to excellent
(883-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear with a slight chance of showers. Patchy
frost. Lows 35 to 40. Highs 52 to 60. West winds 7 to 13 mph.
.TUESDAY...Partly cloudy. Lows 35 to 41. Highs 55 to 61. West
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
33 to 39. Highs 53 to 60. West winds 1 to 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 37 to
43. Highs 55 to 62. Southwest winds 1 to 6 mph.
.FRIDAY...Mostly cloudy with showers likely. Lows 40 to 46. Highs
53 to 60. Southwest winds 2 to 7 mph.
$$
WAZ694-181115-
Yakama Alpine District-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost in the evening.
Widespread frost after midnight.
* Min temperature.....29-35.
* Max humidity........74-89 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph shifting to the south
after midnight.
* Ventilation Index...Poor (44-116) decreasing to poor (25-33)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of frost in the morning. A slight chance of showers in the
afternoon.
* Max temperature.....54-60...except 48-55 ridges.
* Min humidity........35-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-41) increasing to poor (63-123) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then showers after midnight.
* Min temperature.....35-42.
* Max humidity........83-98 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 6 mph increasing to 6
to 12 mph after midnight.
* Ridges/upr slopes....Southwest winds 2 to 7 mph increasing to 9
to 15 mph after midnight.
* CWR.................80 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest around 10 mph increasing to around
20 mph after midnight.
* Ventilation Index...Poor (37-97) increasing to poor (56-162)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers in the morning, then showers likely in the afternoon.
* Max temperature.....48-56...except 38-49 ridges.
* Min humidity........63-78 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 10 to 16 mph with gusts up to 30
mph.
* Ridges/upr slopes....West winds 10 to 16 mph.
* CWR.................40 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West 25 to 30 mph.
* Ventilation Index...Poor to fair (174-364) increasing to good to
excellent (524-902) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy with a chance of showers. Areas of frost.
Lows 30 to 37. Highs 47 to 59. West winds 6 to 12 mph.
.TUESDAY...Areas of frost. A slight chance of showers. Partly
cloudy. Lows 32 to 38. Highs 49 to 61. Terrain driven winds less
than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
31 to 37. Highs 51 to 61. Terrain driven winds less than 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 36 to
42. Highs 51 to 63. Southwest winds 2 to 7 mph.
.FRIDAY...Showers likely. Lows 38 to 45. Highs 45 to 57.
Southwest winds 2 to 7 mph.
$$
ORZ691-WAZ691-181115-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy frost after midnight.
* Min temperature.....33-38.
* Max humidity........81-96 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 8 to 14 mph with gusts up to 25
mph becoming southwest 1 to 5 mph after midnight.
* Ridges/upr slopes....Northwest winds 9 to 15 mph becoming west 2
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph becoming southwest
around 5 mph after midnight.
* Ventilation Index...Poor (86-156) decreasing to poor (25-37)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy frost in the morning.
* Max temperature.....58-64...except 52-60 ridges.
* Min humidity........32-47 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-39) increasing to poor (56-120) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers in
the evening, then a chance of showers after midnight.
* Min temperature.....44-49.
* Max humidity........73-88 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 4 to 10 mph after midnight.
* Ridges/upr slopes....Southwest winds 2 to 7 mph increasing to 7
to 13 mph after midnight.
* CWR.................20 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-39) increasing to poor (25-80) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers.
* Max temperature.....57-63...except 52-59 ridges.
* Min humidity........48-58 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 11 to 17 mph with gusts up
to 30 mph.
* Ridges/upr slopes....Southwest winds 12 to 18 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....West around 20 mph increasing to around 35
mph in the afternoon.
* Ventilation Index...Poor to fair (130-296) increasing to
excellent (1008-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 35 to 41. Highs 57 to 63. Southwest
winds 7 to 13 mph.
.TUESDAY...Partly cloudy. Lows 36 to 41. Highs 58 to 63.
Southwest winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 35 to 40. Highs 59 to 64.
Southwest winds 1 to 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 40 to
45. Highs 63 to 68. Southwest winds 2 to 7 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 43 to 48.
Highs 59 to 66. Southwest winds 3 to 8 mph.
$$
ORZ692-WAZ692-181115-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Areas of frost in the evening.
Widespread frost after midnight.
* Min temperature.....29-36.
* Max humidity........74-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 5 to 11 mph decreasing to 2 to 5
mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph becoming southwest around
5 mph after midnight.
* Ventilation Index...Poor (101-193) decreasing to poor (25-47)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of frost in the morning.
* Max temperature.....56-64...except 49-57 ridges.
* Min humidity........27-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....South around 10 mph.
* Ventilation Index...Poor (25-54) increasing to poor to fair
(109-247) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers in
the evening, then showers likely after midnight.
* Min temperature.....42-47...except 37-42 ridges.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 4 to 9 mph.
* Ridges/upr slopes....South winds 2 to 7 mph increasing to 7 to 13
mph after midnight.
* CWR.................40 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (25-99) increasing to poor (34-134)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers in the morning, then a chance of showers in the
afternoon.
* Max temperature.....48-58...except 41-49 ridges.
* Min humidity........57-72 percent...except 69-84 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 8 to 14 mph.
* Ridges/upr slopes....Southwest winds 8 to 14 mph.
* CWR.................90 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Southwest around 20 mph increasing to west
around 35 mph in the afternoon.
* Ventilation Index...Poor to fair (144-306) increasing to
excellent (963-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of showers. Areas of frost. Partly cloudy.
Lows 33 to 39. Highs 47 to 58. Southwest winds 6 to 12 mph.
.TUESDAY...Partly cloudy. Lows 34 to 40. Highs 51 to 61. South
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
33 to 40. Highs 53 to 63. Southwest winds 1 to 6 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 40 to
45. Highs 57 to 68. South winds 3 to 8 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 42 to 48.
Highs 54 to 64. South winds 4 to 10 mph.
$$
ORZ693-WAZ693-181115-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Areas of frost in the evening.
Widespread frost after midnight.
* Min temperature.....27-36.
* Max humidity........75-90 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 7 to 13 mph decreasing to 2 to 6
mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph decreasing to around 5 mph
after midnight.
* Ventilation Index...Poor to fair (106-220) decreasing to poor
(25-66) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Areas of frost in the morning.
* Max temperature.....56-63...except 50-56 ridges.
* Min humidity........25-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 1
to 6 mph in the afternoon.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-60) increasing to poor to fair
(119-265) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers after
midnight.
* Min temperature.....39-47...except 37-42 ridges.
* Max humidity........77-92 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 5 to 11 mph.
* Ridges/upr slopes....South winds 7 to 13 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (25-133) increasing to poor (25-169)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Showers in the morning, then a
chance of showers in the afternoon.
* Max temperature.....49-57...except 44-50 ridges.
* Min humidity........52-67 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 5 to 11 mph.
* Ridges/upr slopes....Southwest winds 5 to 11 mph.
* CWR.................80 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....Southwest around 20 mph increasing to west
around 30 mph in the afternoon.
* Ventilation Index...Poor to fair (101-261) increasing to
excellent (863-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of showers. Widespread frost. Partly cloudy.
Lows 29 to 39. Highs 50 to 58. Southwest winds 4 to 10 mph.
.TUESDAY...Partly cloudy. Lows 31 to 40. Highs 54 to 63. South
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 31 to 40. Highs 56 to 65.
Southwest winds 1 to 6 mph.
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
36 to 44. Highs 60 to 68. South winds 3 to 8 mph.
.FRIDAY...A chance of showers. Mostly cloudy. Lows 41 to 48.
Highs 58 to 66. South winds 4 to 10 mph.
$$
ORZ701-181115-
Eastern Columbia River Gorge of Oregon-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy frost after midnight.
* Min temperature.....33-38.
* Max humidity........79-94 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 7 to 13 mph with gusts up to 25
mph in the evening becoming drainage winds less than 5 mph.
In the eastern Columbia River Gorge, west winds 9 to 15 mph
with gusts up to 30 mph decreasing to 2 to 7 mph after
midnight.
* Ridges/upr slopes....West winds 4 to 10 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph becoming southwest around
5 mph after midnight.
* Ventilation Index...Poor (77-193) decreasing to poor (25-44)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Patchy frost in the morning. A slight chance of showers in the
afternoon.
* Max temperature.....60-66.
* Min humidity........34-49 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (26-46) increasing to poor (31-103) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then showers after midnight.
* Min temperature.....42-47.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 4 to 9 mph after midnight. In the eastern Columbia
River Gorge, west winds 1 to 5 mph increasing to 5 to 11 mph
after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest 3 to 8 mph after midnight.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph increasing to around 15 mph
after midnight.
* Ventilation Index...Poor (25-59) increasing to poor (37-151)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers in the morning, then showers likely in the afternoon.
* Max temperature.....55-60...except 50-56 ridges.
* Min humidity........62-77 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 8 to 14 mph...except west 10 to
16 mph in the eastern Columbia River Gorge. Gusts to 30 mph
in the afternoon. In the eastern Columbia River Gorge, gusts
to 35 mph.
* Ridges/upr slopes....West winds 8 to 14 mph.
* CWR.................30 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 20 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (105-313) increasing to
excellent (851-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy with a chance of showers. Patchy frost.
Lows 35 to 41. Highs 58 to 63. West winds 5 to 11 mph.
.TUESDAY...A slight chance of showers. Partly cloudy. Lows 37 to
42. Highs 59 to 64. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
36 to 41. Highs 60 to 65. Terrain driven winds less than 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 40 to
45. Highs 61 to 66. Terrain driven winds less than 5 mph.
.FRIDAY...Showers likely. Lows 42 to 47. Highs 55 to 61.
Southwest winds 1 to 6 mph.
$$
ORZ702-181115-
East Slopes of the Mt. Hood National Forest-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost after midnight.
* Min temperature.....31-37.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph becoming southwest around
5 mph after midnight.
* Ventilation Index...Poor (32-112) decreasing to poor (25-34)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Areas of frost in the morning.
* Max temperature.....62-67...except 56-61 ridges.
* Min humidity........26-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-40) increasing to poor (46-148) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then showers after midnight.
* Min temperature.....37-44.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 2 to 7 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest 4 to 9 mph after midnight.
* CWR.................80 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest around 10 mph increasing to around
20 mph after midnight.
* Ventilation Index...Poor (25-93) increasing to poor to fair
(29-213) after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Snow showers in the morning.
Showers.
* Max temperature.....49-57...except 43-51 ridges.
* Min humidity........59-74 percent...except 70-85 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 6 to 12 mph.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....West around 25 mph increasing to around 35
mph in the afternoon.
* Ventilation Index...Poor to fair (131-451) increasing to fair to
excellent (464-926) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of rain and snow showers. Areas of frost.
Partly cloudy. Lows 31 to 37. Highs 49 to 60. West winds 1 to
6 mph.
.TUESDAY...A slight chance of showers. Partly cloudy. Lows 35 to
40. Highs 50 to 63. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
33 to 39. Highs 53 to 64. Terrain driven winds less than 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 39 to
44. Highs 53 to 66. Terrain driven winds less than 5 mph.
.FRIDAY...Showers likely. Lows 40 to 46. Highs 47 to 60.
Southwest winds 1 to 5 mph.
$$
ORZ695-181115-
Eagle Cap Wilderness-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Widespread frost.
* Min temperature.....28-34...except 23-30 ridges.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor (60-172) decreasing to poor (25-62)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Widespread frost in the morning.
* Max temperature.....52-61...except 43-51 ridges.
* Min humidity........27-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to
7 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 3 to 7
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph increasing to south
around 15 mph in the afternoon.
* Ventilation Index...Poor (25-40) increasing to poor to fair
(118-276) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers after
midnight.
* Min temperature.....38-43...except 31-37 ridges.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 5 to 11 mph.
* Ridges/upr slopes....South winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South around 15 mph.
* Ventilation Index...Poor (28-114) increasing to poor (28-132)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Rain and snow showers in the
morning, then a chance of rain and snow showers in the afternoon.
* Max temperature.....46-56...except 36-46 ridges.
* Min humidity........52-67 percent...except 65-80 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 4 to 10 mph.
* Ridges/upr slopes....Southwest winds 5 to 11 mph.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Southwest around 15 mph increasing to west
around 25 mph in the afternoon.
* Ventilation Index...Poor (25-190) increasing to good to excellent
(557-935) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of rain and snow showers. Widespread frost.
Partly cloudy. Lows 23 to 33. Highs 40 to 54. West winds 4 to
9 mph.
.TUESDAY...Partly cloudy. Widespread frost. Lows 29 to 37. Highs
44 to 57. South winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 29 to 37. Highs 47 to 60.
Southwest winds 1 to 6 mph.
.THURSDAY...Partly cloudy with a slight chance of rain and snow
showers. Lows 34 to 41. Highs 48 to 63. South winds 3 to 8 mph.
.FRIDAY...A chance of rain and snow showers. Mostly cloudy. Lows
37 to 45. Highs 45 to 60. South winds 5 to 11 mph.
$$
ORZ694-181115-
Grande Ronde Valley of Oregon-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Widespread frost after
midnight.
* Min temperature.....27-32.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 5 to 11 mph shifting to the
north 1 to 5 mph after midnight.
* Ridges/upr slopes....Northwest winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (159-203) decreasing to poor
(33-57) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Widespread frost in the morning.
* Max temperature.....60-65.
* Min humidity........27-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 2 to 7 mph.
* Ridges/upr slopes....Southeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (33-53) increasing to fair (294-424) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers after
midnight.
* Min temperature.....38-44.
* Max humidity........81-92 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 7 to 13 mph with gusts up to 25
mph.
* Ridges/upr slopes....South winds 7 to 13 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 15 to 20 mph.
* Ventilation Index...Poor to fair (126-210) decreasing to poor to
fair (107-217) after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Showers in the morning, then a
chance of showers in the afternoon.
* Max temperature.....54-59.
* Min humidity........49-58 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 6 to 12 mph.
* Ridges/upr slopes....West winds 6 to 12 mph.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....South around 15 mph increasing to west around
25 mph in the afternoon.
* Ventilation Index...Poor (79-199) increasing to excellent
(995-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of showers. Areas of frost. Partly cloudy.
Lows 29 to 34. Highs 55 to 60. Southwest winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 31 to 36. Highs 58 to 63. South
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 31 to 36. Highs 61 to 66. South
winds 2 to 6 mph.
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
35 to 40. Highs 63 to 68. South winds 4 to 9 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 39 to 44.
Highs 60 to 65. South winds 6 to 12 mph.
$$
ORZ699-181115-
Western Forested Blue Mountains-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost in the evening,
then widespread frost after midnight.
* Min temperature.....27-33.
* Max humidity........76-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph becoming west around
5 mph after midnight.
* Ventilation Index...Poor (76-182) decreasing to poor (25-44)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Areas of frost in the morning.
* Max temperature.....59-65...except 53-60 ridges.
* Min humidity........21-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-44) increasing to poor to fair
(135-267) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers after
midnight.
* Min temperature.....37-44.
* Max humidity........77-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 2 to 7 mph after midnight.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (26-80) increasing to poor (26-98) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Showers likely in the morning,
then a chance of rain and snow showers in the afternoon.
* Max temperature.....50-55...except 43-50 ridges.
* Min humidity........50-65 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 10 mph.
* Ridges/upr slopes....West winds 4 to 10 mph.
* CWR.................60 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West around 20 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (116-346) increasing to
excellent (972-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A slight chance of showers. Widespread frost. Partly
cloudy. Lows 27 to 33. Highs 48 to 57. Southwest winds 3 to
8 mph.
.TUESDAY...Partly cloudy. Lows 31 to 37. Highs 52 to 60. South
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 31 to 37. Highs 55 to 63.
Terrain driven winds less than 5 mph.
.THURSDAY...A slight chance of showers. Mostly cloudy. Lows 35 to
43. Highs 56 to 66. South winds 2 to 7 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 37 to 45.
Highs 53 to 61. South winds 4 to 9 mph.
$$
ORZ696-181115-
John Day Valley-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost after midnight.
* Min temperature.....30-35.
* Max humidity........72-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph shifting to the
southeast after midnight.
* Ventilation Index...Poor (74-156) decreasing to poor (25-35)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Areas of frost in the morning.
* Max temperature.....62-69...except 58-63 ridges.
* Min humidity........22-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (26-62) increasing to poor to fair
(124-266) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers after midnight.
* Min temperature.....42-47.
* Max humidity........71-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 3 to 8 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming south 4
to 9 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (31-95) increasing to poor (42-110)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely in the morning, then a slight chance of showers in
the afternoon.
* Max temperature.....52-59...except 47-52 ridges.
* Min humidity........40-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph. Gusts to 25 mph in
the afternoon.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................30 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West around 15 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (146-288) increasing to
excellent (1044-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy. Areas of frost. Lows 30 to 35. Highs
54 to 62. Southwest winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 33 to 38. Highs 57 to 65.
Southeast winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 34 to 39. Highs 60 to 68.
Terrain driven winds less than 5 mph.
.THURSDAY...Mostly cloudy with a slight chance of showers. Lows
39 to 44. Highs 63 to 71. South winds 2 to 7 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 42 to 47.
Highs 58 to 66. South winds 4 to 9 mph.
$$
ORZ700-181115-
Central Mountains of Oregon-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Widespread frost after
midnight.
* Min temperature.....26-34.
* Max humidity........79-94 percent...except 72-82 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 9 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph shifting to the
southeast after midnight.
* Ventilation Index...Poor (56-114) decreasing to poor (25-29)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Areas of frost in the morning.
* Max temperature.....65-71...except 58-64 ridges.
* Min humidity........21-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....South around 10 mph.
* Ventilation Index...Poor (25-47) increasing to poor to fair
(123-249) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers after midnight.
* Min temperature.....38-45.
* Max humidity........74-84 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 4 to 10 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest 5 to 11 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 10 to 15 mph.
* Ventilation Index...Poor (35-83) increasing to poor (48-116)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the morning, then a slight chance of showers
in the afternoon.
* Max temperature.....53-58...except 46-51 ridges.
* Min humidity........40-55 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 7 to 13 mph with gusts up to 25
mph.
* Ridges/upr slopes....West winds 7 to 13 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....West around 20 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (143-301) increasing to
excellent (1008-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy. Widespread frost. Lows 23 to 33. Highs
55 to 62. Southwest winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 28 to 37. Highs 58 to 65. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 28 to 37. Highs 61 to 68. South
winds 1 to 5 mph.
.THURSDAY...Mostly cloudy with a slight chance of showers. Lows
33 to 43. Highs 63 to 70. South winds 3 to 8 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 37 to 45.
Highs 57 to 63. South winds 5 to 11 mph.
$$
ORZ703-181115-
Warm Springs Reservation-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost after midnight.
* Min temperature.....32-37.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 9 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 4 to 9 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (49-115) decreasing to poor (25-30)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Patchy frost in the morning.
* Max temperature.....65-70...except 58-63 ridges.
* Min humidity........25-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-39) increasing to poor (94-174) in
the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers in
the evening, then showers likely after midnight.
* Min temperature.....43-48...except 37-42 ridges.
* Max humidity........73-81 percent...except 79-94 percent ridges.
* Humidity recovery...Good...except Excellent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 6 to 12 mph after midnight.
* Ridges/upr slopes....Southwest winds 2 to 7 mph increasing to 11
to 17 mph after midnight.
* CWR.................50 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph increasing to southwest
around 20 mph after midnight.
* Ventilation Index...Poor (30-106) increasing to poor to fair
(67-205) after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers in the morning, then a chance of showers in the
afternoon.
* Max temperature.....51-61...except 41-49 ridges.
* Min humidity........52-67 percent...except 68-83 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 9 to 15 mph. Gusts to 30 mph in
the afternoon.
* Ridges/upr slopes....West winds 9 to 15 mph.
* CWR.................40 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West 25 to 30 mph.
* Ventilation Index...Poor to fair (187-433) increasing to good to
excellent (675-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy with a chance of showers. Areas of frost.
Lows 32 to 37. Highs 54 to 62. Southwest winds 4 to 10 mph.
.TUESDAY...A slight chance of showers. Partly cloudy. Lows 35 to
40. Highs 56 to 65. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
35 to 40. Highs 59 to 68. Terrain driven winds less than 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 40 to
45. Highs 60 to 70. Southwest winds 2 to 7 mph.
.FRIDAY...Showers likely. Lows 42 to 47. Highs 53 to 63.
Southwest winds 3 to 8 mph.
$$
ORZ704-181115-
Northern Deschutes National Forest-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Widespread frost after
midnight.
* Min temperature.....28-34.
* Max humidity........76-86 percent...except 61-76 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (36-110) decreasing to poor (25-38)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Areas of frost in the morning.
* Max temperature.....66-72...except 56-64 ridges.
* Min humidity........19-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds up to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-44) increasing to poor to fair
(137-241) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Showers likely after midnight.
* Min temperature.....34-42.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 5 mph shifting to the
southwest 6 to 12 mph after midnight.
* Ridges/upr slopes....Southwest winds 4 to 9 mph increasing to 13
to 19 mph after midnight.
* CWR.................50 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 15 to 20 mph.
* Ventilation Index...Poor (63-163) increasing to poor to fair
(93-279) after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy. Showers in the morning, then a
chance of rain and snow showers in the afternoon.
* Max temperature.....49-54...except 38-46 ridges.
* Min humidity........57-67 percent...except 70-85 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 9 to 15 mph with gusts up to 30
mph.
* Ridges/upr slopes....West winds 9 to 15 mph.
* CWR.................70 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West 30 to 35 mph.
* Ventilation Index...Fair (240-490) increasing to good to
excellent (616-1038) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...A chance of showers. Widespread frost. Partly cloudy.
Lows 25 to 31. Highs 51 to 62. Southwest winds 3 to 8 mph.
.TUESDAY...Partly cloudy with a slight chance of showers.
Widespread frost. Lows 31 to 37. Highs 53 to 64. West winds 1 to
5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
30 to 36. Highs 55 to 68. Southwest winds 2 to 7 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 35 to
40. Highs 55 to 67. Southwest winds 5 to 11 mph.
.FRIDAY...Mostly cloudy with showers likely. Lows 37 to 42. Highs
47 to 60. Southwest winds 7 to 13 mph.
$$
ORZ705-181115-
Southern Deschutes National Forest-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost in the evening.
Widespread frost and patchy fog after midnight.
* Min temperature.....26-33...except 31-36 ridges.
* Max humidity........81-96 percent...except 64-79 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (42-104) decreasing to poor (25) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Widespread frost in the morning.
* Max temperature.....66-71...except 57-64 ridges.
* Min humidity........20-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-44) increasing to poor to fair
(187-281) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy. A chance of showers after
midnight.
* Min temperature.....35-40.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 4 to 9 mph after midnight.
* Ridges/upr slopes....West winds 2 to 5 mph increasing to
southwest 9 to 15 mph after midnight.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 10 to 15 mph.
* Ventilation Index...Poor (70-134) increasing to poor (71-173)
after midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely in the morning, then a chance of showers in the
afternoon.
* Max temperature.....48-53...except 39-47 ridges.
* Min humidity........48-63 percent...except 62-77 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 6 to 12 mph.
* Ridges/upr slopes....West winds 6 to 12 mph.
* CWR.................40 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West 25 to 30 mph.
* Ventilation Index...Fair (260-456) increasing to good to
excellent (679-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy. Widespread frost. Lows 22 to 28. Highs
54 to 60. Southwest winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Widespread frost. Lows 27 to 35. Highs
56 to 63. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 26 to 34. Highs 58 to 65.
Southwest winds 1 to 5 mph.
.THURSDAY...Mostly cloudy with a chance of showers. Lows 30 to
38. Highs 57 to 65. Southwest winds 2 to 7 mph.
.FRIDAY...Mostly cloudy with showers likely. Lows 35 to 40. Highs
48 to 56. South winds 4 to 10 mph.
$$
ORZ697-181115-
Central Blue Mountains-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost in the evening,
then widespread frost after midnight.
* Min temperature.....25-31.
* Max humidity........76-90 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor (70-150) decreasing to poor (25-53)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. Widespread frost in the
morning.
* Max temperature.....58-64...except 53-60 ridges.
* Min humidity........24-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-35) increasing to poor to fair
(150-276) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers
after midnight.
* Min temperature.....36-42.
* Max humidity........72-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming south 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (27-87).
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the morning, then a slight chance of showers
in the afternoon.
* Max temperature.....50-55...except 45-51 ridges.
* Min humidity........44-55 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................20 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....West around 20 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor to fair (107-227) increasing to
excellent (961-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Widespread frost. Lows 23 to 29. Highs
48 to 56. West winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Widespread frost. Lows 27 to 33. Highs
52 to 59. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 29 to 34. Highs 55 to 62.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
32 to 38. Highs 55 to 63. South winds 1 to 6 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 35 to 40.
Highs 52 to 58. South winds 3 to 8 mph.
$$
ORZ698-181115-
Southern Blue Mountains-
241 PM PDT Fri Oct 17 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of frost in the evening,
then widespread frost after midnight.
* Min temperature.....25-31.
* Max humidity........75-90 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 9 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor (91-163) decreasing to poor (25-53)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. Areas of frost in the morning.
* Max temperature.....58-63...except 53-59 ridges.
* Min humidity........26-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-29) increasing to poor to fair
(138-226) in the afternoon.
.SATURDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....36-41.
* Max humidity........67-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 2 to 7 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming south 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South around 10 mph.
* Ventilation Index...Poor (29-69) decreasing to poor (25-55) after
midnight.
.SUNDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the morning.
* Max temperature.....51-59.
* Min humidity........36-46 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....West around 15 mph increasing to around 30
mph in the afternoon.
* Ventilation Index...Poor (102-196) increasing to excellent
(1038-1050) in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Widespread frost. Lows 22 to 27. Highs
52 to 57. West winds 6 to 12 mph.
.TUESDAY...Mostly clear. Widespread frost. Lows 26 to 31. Highs
57 to 62. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 28 to 33. Highs 58 to 63. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 31 to 36. Highs 60 to 66. South
winds 2 to 7 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows 34 to 39.
Highs 55 to 61. South winds 4 to 9 mph.
$$
.8-14 DAY OUTLOOK for Saturday October 25 through Friday October 31...
A greater chance of below average temperatures and above average
precipitation.
$$