Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
831
FNUS56 KPDT 102108
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
208 PM PDT Wed Sep 10 2025
.DISCUSSION...The shower and thunderstorm threat will continue to
gradually shift eastward over the next several days, however
central and eastern Oregon will see another round materialize this
afternoon and evening. Given the frequency of storms as of late,
localized flooding concerns may become an issue around deep
canyons and burn scars under heavier cells. We`ll see another
round develop for the same area Thursday, before conditions trend
quieter Friday heading into the weekend.
***Thunderstorms imply strong gusty 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.
WAZ695-111130-
East Washington South Central Cascade Mountains-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....49-57.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 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 around 10 mph.
* Ventilation Index...Poor (49-185) decreasing to poor (25-105)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny. A
slight chance of showers in the afternoon.
* Max temperature.....73-81...except 64-73 ridges.
* Min humidity........40-55 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (25-118) increasing to poor to fair
(149-337) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....47-54.
* Max humidity........72-87 percent.
* Humidity recovery...Good...except Excellent ridges.
* 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 around 15 mph.
* Ventilation Index...Poor to fair (43-245) decreasing to poor
(25-141) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-80...except 63-72 ridges.
* Min humidity........38-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (25-124) increasing to poor to fair
(120-284) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 47 to 53. Highs 67 to 80. West
winds 2 to 7 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 49 to 56. Highs 62 to 75. West
winds 1 to 6 mph.
.MONDAY...A chance of showers. Partly cloudy. Lows 47 to 54.
Highs 62 to 75. Northwest winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 48 to 55. Highs 67 to 79. East
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Lows
50 to 56. Highs 66 to 78. West winds 1 to 6 mph.
$$
WAZ690-111130-
Kittitas Valley-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....56-63.
* Max humidity........60-75 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 9 mph.
* Ridges/upr slopes....Northwest winds 4 to 10 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor to fair (172-268) decreasing to poor
(35-129) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-87...except 73-82 ridges.
* Min humidity........35-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 4 to 9 mph.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor (56-156) increasing to fair (334-440) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-60.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 10 mph.
* Ridges/upr slopes....Northwest winds 4 to 10 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 15 to 20 mph.
* Ventilation Index...Poor to fair (172-324) decreasing to poor
(33-143) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-85...except 71-80 ridges.
* Min humidity........34-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (26-120) increasing to poor to fair
(144-308) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 53 to 60. Highs 78 to 85.
Northwest winds 2 to 7 mph.
.SUNDAY...Partly cloudy with a chance of showers. Lows 54 to 61.
Highs 75 to 82. Northwest winds 2 to 7 mph.
.MONDAY...Partly cloudy with a slight chance of showers. Lows
53 to 59. Highs 75 to 82. Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 53 to 60. Highs 77 to 83. Northeast
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 54 to 62. Highs 78 to 84.
Northwest winds 2 to 7 mph.
$$
WAZ694-111130-
Yakama Alpine District-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-57.
* Max humidity........75-90 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 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 around 10 mph.
* Ventilation Index...Poor (72-160) decreasing to poor (25-69)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny. A
slight chance of showers.
* Max temperature.....74-83...except 66-76 ridges.
* Min humidity........39-54 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph.
* Ridges/upr slopes....Northwest winds 2 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-76) increasing to poor to fair
(174-320) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-54.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (70-196) decreasing to poor (25-81)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-82...except 66-75 ridges.
* Min humidity........37-52 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....West winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-65) increasing to poor to fair
(101-211) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 46 to 55. Highs 71 to 82. West
winds 1 to 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 49 to 57. Highs 66 to 78. West
winds 2 to 7 mph.
.MONDAY...A slight chance of showers. Partly cloudy. Lows 47 to
54. Highs 67 to 78. West winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 48 to 55. Highs 70 to 81. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 50 to 57. Highs 70 to 81. West
winds 1 to 5 mph.
$$
ORZ691-WAZ691-111130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening. A slight chance of thunderstorms. A chance of
showers after midnight.
* Min temperature.....56-62.
* Max humidity........74-89 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (69-175) decreasing to poor (25-70)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A chance of showers in the
morning. A slight chance of thunderstorms. A slight chance of
showers in the afternoon.
* Max temperature.....76-85.
* Min humidity........41-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......8500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (41-123) increasing to fair (225-349) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers.
* Min temperature.....54-59.
* Max humidity........77-92 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 4 to 9 mph.
* Ridges/upr slopes....Southwest winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor to fair (118-268) decreasing to poor
(25-104) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers.
* Max temperature.....78-85.
* Min humidity........35-46 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 3 to 8 mph.
* Ridges/upr slopes....Southwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Poor (30-144) increasing to poor to fair
(184-388) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 53 to 58. Highs 81 to 86.
Southwest winds 2 to 7 mph.
.SUNDAY...Partly cloudy with a chance of showers. Lows 55 to 60.
Highs 77 to 84. Southwest winds 3 to 8 mph.
.MONDAY...Partly cloudy with a slight chance of showers. Lows
54 to 59. Highs 75 to 82. West winds 4 to 9 mph.
.TUESDAY...Mostly clear. Lows 53 to 58. Highs 78 to 84. Northwest
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 55 to 60. Highs 80 to 85.
Southwest winds 2 to 7 mph.
$$
ORZ692-WAZ692-111130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy in the evening. A chance
of showers and thunderstorms in the evening, then showers likely
and a slight chance of thunderstorms after midnight.
* Min temperature.....50-58.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (33-117) decreasing to poor (25-48)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....69-77...except 63-68 ridges.
* Min humidity........52-64 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......6500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-76) increasing to poor (73-181) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....49-57.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-75) decreasing to poor (25-53) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A chance of showers. A slight
chance of thunderstorms in the afternoon.
* Max temperature.....70-78...except 63-68 ridges.
* Min humidity........44-58 percent...except 55-68 percent ridges.
* 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....20 percent (slight chance).
* Mixing height.......7000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-71) increasing to poor to fair
(94-208) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 49 to
57. Highs 70 to 81. Terrain driven winds less than 5 mph.
.SUNDAY...Mostly clear with a chance of showers and a slight
chance of thunderstorms. Lows 51 to 59. Highs 69 to 79. South
winds 1 to 5 mph.
.MONDAY...Partly cloudy with a chance of showers. Lows 49 to 57.
Highs 64 to 75. West winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 47 to 55. Highs 68 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 49 to 57. Highs 71 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ693-WAZ693-111130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy in the evening. Showers
likely and a chance of thunderstorms in the evening, then a
chance of showers and a slight chance of thunderstorms after
midnight.
* Min temperature.....47-57.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (71-183) decreasing to poor (25-54)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....69-79...except 63-72 ridges.
* Min humidity........46-61 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......8500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-70) increasing to poor to fair
(70-228) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a chance of
thunderstorms in the evening, then a chance of showers after
midnight.
* Min temperature.....47-57.
* Max humidity........83-98 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-59) decreasing to poor (25-49) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a slight chance of thunderstorms
in the afternoon.
* Max temperature.....68-77...except 61-69 ridges.
* Min humidity........49-63 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................30 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......8500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
northwest in the afternoon.
* Ventilation Index...Poor (25-53) increasing to poor to fair
(116-208) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A chance of showers and a slight chance of
thunderstorms. Mostly clear. Lows 46 to 56. Highs 71 to 80.
Terrain driven winds less than 5 mph.
.SUNDAY...Mostly clear with a chance of showers. Lows 47 to 58.
Highs 72 to 81. South winds 1 to 5 mph.
.MONDAY...Partly cloudy with a chance of showers. Lows 46 to 57.
Highs 67 to 75. Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
45 to 55. Highs 70 to 78. Terrain driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 56. Highs 72 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ701-111130-
Eastern Columbia River Gorge of Oregon-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly clear. A slight chance of
thunderstorms in the evening. A slight chance of showers.
* Min temperature.....53-58.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph...except west 4 to 10
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor to fair (130-252) decreasing to poor
(36-134) after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers.
* Max temperature.....72-79.
* Min humidity........48-63 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 10 mph...except west 5 to 11
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor (51-197) increasing to fair (255-465) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-56.
* Max humidity........81-96 percent.
* Humidity recovery...Excellent.
* 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.......Near surface.
* Transport winds.....West 15 to 20 mph.
* Ventilation Index...Poor to fair (139-377) decreasing to poor
(31-149) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-81.
* Min humidity........38-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph...except west 3 to 8
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (30-164) increasing to poor to fair
(197-429) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 50 to 55. Highs 80 to 85. West
winds 2 to 7 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 53 to 59. Highs 75 to 80. West
winds 2 to 7 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 52 to 57. Highs 74 to 79. West
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 52 to 57. Highs 78 to 83. North
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 53 to 59. Highs 78 to 83. West
winds 2 to 7 mph.
$$
ORZ702-111130-
East Slopes of the Mt. Hood National Forest-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening. A chance of showers after midnight.
* Min temperature.....48-56.
* Max humidity........74-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor (48-148) decreasing to poor (25-85)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A chance of showers in the
morning, then a slight chance of showers in the afternoon.
* Max temperature.....69-79...except 61-74 ridges.
* Min humidity........45-55 percent...except 51-66 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 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.....West around 10 mph.
* Ventilation Index...Poor (25-110) increasing to poor to fair
(113-263) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....46-54.
* Max humidity........73-88 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor (42-198) decreasing to poor (25-95)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....74-81...except 67-76 ridges.
* Min humidity........38-51 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.......5000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (25-83) increasing to poor to fair
(100-232) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 47 to 55. Highs 71 to 83. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy with showers likely and a slight chance
of thunderstorms. Lows 51 to 58. Highs 65 to 78. Terrain driven
winds less than 5 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 48 to 56. Highs 64 to 77.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 49 to 55. Highs 69 to 80. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 58. Highs 69 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ695-111130-
Eagle Cap Wilderness-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy in the evening. Showers
likely and a chance of thunderstorms in the evening, then a
chance of showers after midnight.
* Min temperature.....48-54...except 42-49 ridges.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................30 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (63-227) decreasing to poor
(25-79) after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the morning, then showers
likely and a chance of thunderstorms in the afternoon.
* Max temperature.....63-74...except 52-64 ridges.
* Min humidity........53-68 percent...except 64-79 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......7500 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor (25-59) increasing to poor to fair
(56-206) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight.
* Min temperature.....48-54...except 42-49 ridges.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-48).
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....64-74...except 52-63 ridges.
* Min humidity........53-68 percent...except 68-83 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......8000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-40) increasing to poor to fair
(99-207) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A chance of showers and a slight chance of
thunderstorms. Mostly clear. Lows 43 to 53. Highs 61 to 76.
Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 45 to 55. Highs 61 to 76. Terrain
driven winds less than 5 mph.
.MONDAY...Partly cloudy with a chance of showers. Lows 44 to 53.
Highs 56 to 71. Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
42 to 52. Highs 59 to 74. Terrain driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 44 to 53. Highs 62 to 76. Terrain
driven winds less than 5 mph.
$$
ORZ694-111130-
Grande Ronde Valley of Oregon-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy in the evening. Showers
likely and a chance of thunderstorms in the evening, then a
chance of showers and a slight chance of thunderstorms after
midnight.
* Min temperature.....47-52.
* Max humidity........95-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................10 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (163-227) decreasing to poor
(46-84) after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....71-76.
* Min humidity........57-63 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......5000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (27-69) increasing to poor (90-184) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....47-52.
* Max humidity........94-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (42-70) decreasing to poor (27-49) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers. A slight chance of thunderstorms in the
afternoon.
* Max temperature.....73-78.
* Min humidity........50-55 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (27-47) increasing to poor to fair
(179-253) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 46 to
51. Highs 77 to 82. Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 47 to 52. Highs 77 to 82. Southeast
winds 1 to 5 mph.
.MONDAY...Partly cloudy with a chance of showers. Lows 46 to 51.
Highs 72 to 77. Northwest winds 2 to 5 mph.
.TUESDAY...Partly cloudy. Lows 45 to 50. Highs 75 to 80. North
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 77 to 82. Terrain
driven winds less than 5 mph.
$$
ORZ699-111130-
Western Forested Blue Mountains-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and
thunderstorms in the evening, then showers likely and a slight
chance of thunderstorms after midnight.
* Min temperature.....46-52.
* Max humidity........86-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (62-160) decreasing to poor (25-61)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....65-72...except 59-66 ridges.
* Min humidity........58-72 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......5000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-57) increasing to poor (75-157) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....45-51.
* Max humidity........85-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (27-85) decreasing to poor (25-47) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the morning, then a chance of showers and a slight chance of
thunderstorms in the afternoon.
* Max temperature.....69-75...except 62-69 ridges.
* Min humidity........45-57 percent...except 53-68 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-44) increasing to poor to fair
(141-223) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 45 to
52. Highs 68 to 77. Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 48 to 54. Highs 67 to 75. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 45 to 51. Highs 62 to 71. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 44 to 50. Highs 66 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 52. Highs 69 to 78. Terrain
driven winds less than 5 mph.
$$
ORZ696-111130-
John Day Valley-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of thunderstorms in
the evening. Showers likely. A slight chance of thunderstorms
after midnight.
* Min temperature.....49-55.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (64-142) decreasing to poor (25-73)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....66-74...except 62-67 ridges.
* Min humidity........54-63 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (31-95) increasing to poor to fair
(112-238) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
* Min temperature.....47-53.
* Max humidity........79-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (36-118) decreasing to poor (25-64)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny. A
slight chance of showers and thunderstorms in the afternoon.
* Max temperature.....71-79...except 66-71 ridges.
* Min humidity........38-49 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....20 percent (slight chance).
* Mixing height.......7500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-52) increasing to poor to fair
(151-251) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 48 to 54. Highs 75 to 83. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 50 to 56. Highs 72 to 80. Terrain
driven winds less than 5 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 48 to 53. Highs 68 to 76.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 47 to 52. Highs 72 to 80. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 74 to 83. Terrain
driven winds less than 5 mph.
$$
ORZ700-111130-
Central Mountains of Oregon-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of thunderstorms in
the evening. A chance of showers.
* Min temperature.....44-52.
* Max humidity........88-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (64-130) decreasing to poor (25-67)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers. A slight
chance of thunderstorms in the afternoon.
* Max temperature.....66-74...except 60-65 ridges.
* Min humidity........53-62 percent...except 62-73 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................50 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (33-97) increasing to fair (223-345) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....41-50.
* Max humidity........86-100 percent.
* Humidity recovery...Excellent.
* 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 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (95-219) decreasing to poor
(25-49) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....71-78...except 65-70 ridges.
* Min humidity........37-44 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.......7500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-43) increasing to poor to fair
(156-250) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 42 to 51. Highs 74 to 82.
Southwest winds 1 to 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 44 to 54. Highs 70 to 77. Southwest
winds 1 to 6 mph.
.MONDAY...Partly cloudy with a chance of showers. Lows 41 to 51.
Highs 67 to 74. West winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 41 to 50. Highs 72 to 78.
Northeast winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 44 to 53. Highs 75 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ703-111130-
Warm Springs Reservation-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....53-58...except 48-53 ridges.
* Max humidity........77-91 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (89-185) decreasing to poor (25-89)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers. A slight chance of thunderstorms in the
afternoon.
* Max temperature.....71-79...except 59-68 ridges.
* Min humidity........48-58 percent...except 60-75 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (38-124) increasing to fair (212-398) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....49-54.
* Max humidity........76-88 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor to fair (102-260) decreasing to poor
(25-88) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....75-82...except 64-73 ridges.
* Min humidity........35-42 percent...except 44-59 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 6 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (25-84) increasing to poor to fair
(160-294) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 49 to 54. Highs 76 to 84. West
winds 1 to 6 mph.
.SUNDAY...Partly cloudy with showers likely and a slight chance
of thunderstorms. Lows 53 to 58. Highs 69 to 79. West winds 2 to
7 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Partly cloudy. Lows 50 to 55. Highs 68 to 78. West
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 50 to 55. Highs 73 to 81. East
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 52 to 57. Highs 74 to 84. West
winds 1 to 5 mph.
$$
ORZ704-111130-
Northern Deschutes National Forest-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of thunderstorms in the evening. A chance of showers.
* Min temperature.....44-49.
* Max humidity........85-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................30 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (63-151) decreasing to poor (25-87)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers. A slight chance of thunderstorms in the
afternoon.
* Max temperature.....69-74...except 56-66 ridges.
* Min humidity........48-62 percent...except 65-80 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....Northwest winds 1 to 6 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (29-113) increasing to poor to fair
(169-339) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A chance of showers in the
evening.
* Min temperature.....42-49.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 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.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor (60-198) decreasing to poor (25-78)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....74-80...except 61-71 ridges.
* Min humidity........36-45 percent...except 46-61 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-68) increasing to poor to fair
(141-243) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 43 to 50. Highs 70 to 83. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy with showers likely and a slight chance
of thunderstorms. Lows 47 to 53. Highs 62 to 76. West winds 1 to
5 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 43 to 50.
Highs 61 to 74. West winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 43 to 49. Highs 67 to 79. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 52. Highs 68 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ705-111130-
Southern Deschutes National Forest-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a chance of
thunderstorms in the evening, then a chance of showers after
midnight.
* Min temperature.....40-46.
* Max humidity........94-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 6 mph after midnight.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (56-112) decreasing to poor (25-55)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a slight chance of thunderstorms
in the afternoon.
* Max temperature.....64-69...except 55-63 ridges.
* Min humidity........61-70 percent...except 68-83 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................30 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......4500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (35-87) increasing to poor to fair
(192-338) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....38-45.
* Max humidity........92-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (68-184) decreasing to poor (25-39)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....70-75...except 61-68 ridges.
* Min humidity........40-51 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.......8000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-33) increasing to poor to fair
(168-240) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 38 to 46. Highs 70 to 78. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers. Lows 41 to 49.
Highs 63 to 72. Terrain driven winds less than 5 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 38 to 46.
Highs 62 to 70. Terrain driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 37 to 45. Highs 68 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 39 to 48. Highs 70 to 78. Terrain
driven winds less than 5 mph.
$$
ORZ697-111130-
Central Blue Mountains-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers and a chance of
thunderstorms in the evening, then showers likely after midnight.
* Min temperature.....42-48.
* Max humidity........91-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................70 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor (46-132) decreasing to poor (25-67)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....62-67...except 57-64 ridges.
* Min humidity........61-73 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......4500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Poor (31-91) increasing to poor to fair
(116-226) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....41-47.
* Max humidity........90-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (37-105) decreasing to poor (25-48)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the morning, then a chance of showers and a slight chance of
thunderstorms in the afternoon.
* Max temperature.....67-72...except 61-67 ridges.
* Min humidity........48-63 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-45) increasing to poor to fair
(179-325) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 41 to
48. Highs 67 to 74. Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 44 to 52. Highs 66 to 72. Terrain
driven winds less than 5 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 41 to 48. Highs 62 to 68.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 40 to 47. Highs 65 to 72. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 49. Highs 68 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ698-111130-
Southern Blue Mountains-
208 PM PDT Wed Sep 10 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then a chance of showers
after midnight.
* Min temperature.....44-49.
* Max humidity........92-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor (76-158) decreasing to poor (31-75)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a chance of thunderstorms in the
afternoon.
* Max temperature.....62-68.
* Min humidity........54-67 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......4500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor (53-105) increasing to poor to fair
(186-264) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....41-47.
* Max humidity........91-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Poor (60-114) decreasing to poor (25-46)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....67-72.
* Min humidity........42-54 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....20 percent (slight chance).
* Mixing height.......7500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-39) increasing to poor to fair
(176-344) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 42 to
47. Highs 71 to 76. Northwest winds up to 5 mph.
.SUNDAY...Partly cloudy with a chance of showers. Lows 44 to 50.
Highs 69 to 76. Southeast winds 2 to 7 mph.
.MONDAY...A chance of showers. Partly cloudy. Lows 41 to 47.
Highs 66 to 72. Northwest winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 41 to 46. Highs 69 to 75.
Northeast winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 43 to 48. Highs 72 to 78. Terrain
driven winds less than 5 mph.
$$
.8-14 DAY OUTLOOK for Thursday September 18 through Wednesday September 24...
A greater chance of above normal temperatures and near normal
precipitation.
$$