Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
378
FNUS56 KPDT 182116
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
216 PM PDT Mon Aug 18 2025
.DISCUSSION...A mostly dry and benign pattern is expected over the
course of the week for the region. The eastern mountains of Oregon
may see an isolated shower Tuesday afternoon, but otherwise not
expecting much besides a gradual warming trend through next
weekend. Breezy winds will prevail at times through the Cascade
Gaps, mainly through the first half of the work week, but
critical conditions are not anticipated.
***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.
WAZ695-191130-
East Washington South Central Cascade Mountains-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....45-52.
* Max humidity........69-84 percent.
* Humidity recovery...Good.
* 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 10 mph.
* Ventilation Index...Poor to fair (110-246) decreasing to poor
(30-90) after midnight.
.TUESDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....71-80...except 63-71 ridges.
* Min humidity........30-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (41-115) increasing to fair (266-442) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....47-54.
* Max humidity........69-84 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.....West around 15 mph.
* Ventilation Index...Poor to fair (117-297) decreasing to poor
(30-108) after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....70-78...except 61-70 ridges.
* Min humidity........35-50 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.......9000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (36-128) increasing to fair to good
(298-510) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 46 to 52. Highs 71 to 83.
Northwest winds 2 to 7 mph.
.FRIDAY...Clear. Lows 52 to 57. Highs 76 to 88. Northeast winds
1 to 5 mph.
.SATURDAY...Clear. Lows 56 to 62. Highs 79 to 92. Terrain driven
winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 55 to 62. Highs 75 to 89. West winds
2 to 7 mph.
.MONDAY...Mostly clear. Lows 52 to 60. Highs 71 to 86. Northwest
winds 2 to 7 mph.
$$
WAZ690-191130-
Kittitas Valley-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....53-59.
* Max humidity........58-73 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 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Fair (231-355) decreasing to poor (37-101)
after midnight.
.TUESDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....81-88...except 71-83 ridges.
* Min humidity........22-31 percent.
* 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.......9000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (60-136) increasing to fair to good
(361-519) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-61.
* Max humidity........54-69 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 5 to 11 mph.
* Ridges/upr slopes....Northwest winds 6 to 12 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph.
* Ventilation Index...Fair (261-403) decreasing to poor (47-135)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-87...except 71-82 ridges.
* Min humidity........24-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 10 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor (58-164) increasing to fair to excellent
(476-706) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 52 to 59. Highs 82 to 89. Northwest winds
5 to 11 mph.
.FRIDAY...Clear. Lows 56 to 63. Highs 86 to 93. North winds 2 to
7 mph.
.SATURDAY...Clear. Lows 60 to 67. Highs 91 to 99. North winds
2 to 7 mph.
.SUNDAY...Mostly clear. Lows 62 to 67. Highs 90 to 98. Northwest
winds 4 to 9 mph.
.MONDAY...Mostly clear. Lows 61 to 66. Highs 86 to 94. Northwest
winds 4 to 10 mph.
$$
WAZ694-191130-
Yakama Alpine District-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....46-53.
* Max humidity........62-77 percent.
* Humidity recovery...Good...except Moderate 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 10 mph.
* Ventilation Index...Poor to fair (155-279) decreasing to poor
(25-59) after midnight.
.TUESDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....76-85...except 67-78 ridges.
* Min humidity........22-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southwest 2
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (41-77) increasing to fair to good
(355-523) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....47-55.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 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 10 mph.
* Ventilation Index...Poor to fair (139-245) decreasing to poor
(25-64) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-85...except 66-79 ridges.
* Min humidity........25-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-64) increasing to fair (287-405) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 47 to 54. Highs 76 to 87. Northwest winds
2 to 7 mph.
.FRIDAY...Clear. Lows 53 to 59. Highs 81 to 94. Northeast winds
1 to 5 mph.
.SATURDAY...Mostly clear. Lows 57 to 63. Highs 84 to 97. North
winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 57 to 64. Highs 83 to 96. West winds
1 to 5 mph.
.MONDAY...Mostly clear. Lows 54 to 61. Highs 78 to 91. West winds
2 to 7 mph.
$$
ORZ691-WAZ691-191130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....54-60.
* Max humidity........56-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (179-307) decreasing to poor
(27-61) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-89.
* Min humidity........21-28 percent.
* 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.......8000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (39-105) increasing to fair (253-407) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-62.
* Max humidity........57-72 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (135-303) decreasing to poor
(30-76) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-89.
* Min humidity........23-29 percent.
* 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.......9500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (35-115) increasing to fair (319-483) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 54 to 59. Highs 86 to 91. West winds 3 to
8 mph.
.FRIDAY...Clear. Lows 56 to 61. Highs 91 to 97. Northeast winds
2 to 7 mph.
.SATURDAY...Mostly clear. Lows 60 to 65. Highs 94 to 100. North
winds 3 to 8 mph.
.SUNDAY...Mostly clear. Lows 62 to 67. Highs 94 to 100. West
winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 61 to 66. Highs 89 to 96. West winds
2 to 7 mph.
$$
ORZ692-WAZ692-191130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-58.
* Max humidity........59-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 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.
* Ventilation Index...Poor (86-170) decreasing to poor (25-54)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-87...except 72-79 ridges.
* Min humidity........25-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-59) increasing to poor to fair
(154-264) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear. A slight chance of showers in
the evening.
* Min temperature.....50-59.
* Max humidity........53-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 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 10 mph.
* Ventilation Index...Poor (60-144) decreasing to poor (25-59)
after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....76-85...except 69-75 ridges.
* Min humidity........26-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (26-90) increasing to fair (229-367) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 50 to 58. Highs 76 to 87. West winds 2 to
7 mph.
.FRIDAY...Clear. Lows 52 to 60. Highs 83 to 94. Northeast winds
1 to 5 mph.
.SATURDAY...Mostly clear. Lows 57 to 65. Highs 85 to 96. East
winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 59 to 66. Highs 84 to 95. West winds
1 to 5 mph.
.MONDAY...Mostly clear. Lows 57 to 65. Highs 81 to 91. West winds
1 to 6 mph.
$$
ORZ693-WAZ693-191130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-60.
* Max humidity........64-79 percent...except 57-67 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 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.....North 5 to 10 mph.
* Ventilation Index...Poor to fair (99-205) decreasing to poor
(25-53) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....83-91...except 78-85 ridges.
* Min humidity........22-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 1 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming north 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-59) increasing to poor to fair
(166-472) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-61.
* Max humidity........56-71 percent...except 50-60 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 6 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 5 to 10 mph.
* Ventilation Index...Poor to fair (102-206) decreasing to poor
(25-59) after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....79-88...except 74-81 ridges.
* Min humidity........23-29 percent.
* 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 north 2 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-59) increasing to fair (268-362) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 49 to 59. Highs 79 to 89. Northwest winds
2 to 7 mph.
.FRIDAY...Clear. Lows 50 to 60. Highs 86 to 96. Northeast winds
1 to 6 mph.
.SATURDAY...Mostly clear. Lows 56 to 65. Highs 90 to 100. East
winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 57 to 67. Highs 88 to 98. Northwest
winds 1 to 6 mph.
.MONDAY...Mostly clear. Lows 56 to 65. Highs 84 to 94. West winds
1 to 6 mph.
$$
ORZ701-191130-
Eastern Columbia River Gorge of Oregon-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....50-55.
* Max humidity........69-84 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 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...Fair (220-350) decreasing to poor (26-92)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 76-82 ridges.
* Min humidity........28-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to
7 mph in the afternoon. In the eastern Columbia River Gorge,
west winds 3 to 8 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (35-119) increasing to fair (303-483) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....52-58.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 10 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Fair (218-354) decreasing to poor (39-111)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 76-83 ridges.
* Min humidity........28-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph...except west 4 to 9
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor (40-138) increasing to fair to good
(397-585) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 51 to 56. Highs 85 to 90. West winds 4 to
9 mph.
.FRIDAY...Clear. Lows 57 to 62. Highs 91 to 96. Northeast winds
1 to 6 mph.
.SATURDAY...Mostly clear. Lows 60 to 65. Highs 93 to 98.
Northwest winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 59 to 65. Highs 90 to 96. West winds
2 to 7 mph.
.MONDAY...Mostly clear. Lows 57 to 62. Highs 86 to 91. West winds
3 to 8 mph.
$$
ORZ702-191130-
East Slopes of the Mt. Hood National Forest-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....45-53.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 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 (119-273) decreasing to poor
(25-57) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-84...except 71-79 ridges.
* Min humidity........28-41 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.......6500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-62) increasing to fair (236-370) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....47-56.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 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 10 to 15 mph.
* Ventilation Index...Poor to fair (102-256) decreasing to poor
(25-69) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-85...except 70-79 ridges.
* Min humidity........29-44 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.......7000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (25-72) increasing to fair (244-414) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 47 to 55. Highs 77 to 88. West winds up
to 5 mph.
.FRIDAY...Clear. Lows 55 to 61. Highs 82 to 94. Terrain driven
winds less than 5 mph.
.SATURDAY...Mostly clear. Lows 58 to 65. Highs 83 to 96. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 56 to 64. Highs 80 to 95. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 53 to 61. Highs 76 to 91. West winds
1 to 5 mph.
$$
ORZ695-191130-
Eagle Cap Wilderness-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-56.
* Max humidity........56-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph shifting to the
northeast 2 to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Poor (81-181) decreasing to poor (25-62)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-92...except 70-81 ridges.
* Min humidity........18-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* 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.......11000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-70) increasing to fair to excellent
(379-793) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-58...except 47-55 ridges.
* Max humidity........53-65 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor (46-150) decreasing to poor (25-82)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-88...except 66-77 ridges.
* Min humidity........23-36 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.......10500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-80) increasing to fair (253-469) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 46 to 55. Highs 71 to 86. North winds
2 to 7 mph.
.FRIDAY...Clear. Lows 49 to 58. Highs 77 to 92. North winds 2 to
7 mph.
.SATURDAY...Partly cloudy. Lows 54 to 63. Highs 79 to 94. North
winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 55 to 64. Highs 77 to 92. West winds
1 to 6 mph.
.MONDAY...A slight chance of showers. Mostly clear. Lows 53 to
62. Highs 74 to 89. West winds 1 to 5 mph.
$$
ORZ694-191130-
Grande Ronde Valley of Oregon-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........71-86 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...Fair (202-252) decreasing to poor (58-86)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93.
* Min humidity........22-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming north 3 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (54-82) increasing to fair (244-318) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 10 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 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 (179-263) decreasing to poor
(59-99) after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....83-88.
* Min humidity........23-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (66-118) increasing to fair to good
(384-526) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 49 to 54. Highs 85 to 90. Northwest winds
4 to 10 mph.
.FRIDAY...Clear. Lows 50 to 55. Highs 92 to 97. North winds 1 to
6 mph.
.SATURDAY...Mostly clear. Lows 57 to 62. Highs 94 to 99. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 58 to 63. Highs 93 to 98. Northwest
winds 1 to 6 mph.
.MONDAY...Mostly clear. Lows 56 to 61. Highs 89 to 94. Northwest
winds 2 to 7 mph.
$$
ORZ699-191130-
Western Forested Blue Mountains-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....48-53.
* Max humidity........66-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Poor to fair (90-216) decreasing to poor
(25-53) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-87...except 74-82 ridges.
* Min humidity........20-31 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.......11000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-44) increasing to poor to good
(193-603) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....48-54.
* Max humidity........55-67 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (101-211) decreasing to poor
(25-67) after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....76-83...except 71-78 ridges.
* Min humidity........24-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-67) increasing to fair (235-435) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 47 to 54. Highs 76 to 85. North winds
1 to 6 mph.
.FRIDAY...Clear. Lows 50 to 56. Highs 83 to 92. Terrain driven
winds less than 5 mph.
.SATURDAY...Mostly clear. Lows 56 to 62. Highs 84 to 94. North
winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 56 to 62. Highs 83 to 92. Terrain
driven winds less than 5 mph.
.MONDAY...A slight chance of showers. Mostly clear. Lows 54 to
61. Highs 80 to 89. Terrain driven winds less than 5 mph.
$$
ORZ696-191130-
John Day Valley-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....49-54.
* Max humidity........66-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 1 to 6 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 (198-310) decreasing to poor
(27-65) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-89...except 76-81 ridges.
* Min humidity........18-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....North around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Poor (25-44) increasing to fair (252-470) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........54-65 percent.
* Humidity recovery...Moderate.
* 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...Fair (204-318) decreasing to poor (28-76)
after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....79-87...except 74-79 ridges.
* Min humidity........22-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (28-66) increasing to fair (257-371) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 50 to 55. Highs 82 to 90. North winds
2 to 7 mph.
.FRIDAY...Clear. Lows 53 to 58. Highs 90 to 98. Northeast winds
1 to 6 mph.
.SATURDAY...Mostly clear. Lows 59 to 64. Highs 90 to 99.
Northeast winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 59 to 64. Highs 89 to 98. Northwest
winds 1 to 5 mph.
.MONDAY...Mostly clear. Lows 57 to 62. Highs 85 to 94. West winds
1 to 6 mph.
$$
ORZ700-191130-
Central Mountains of Oregon-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-52.
* Max humidity........73-88 percent.
* Humidity recovery...Excellent...except Good ridges.
* 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 5 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 5 to 10 mph.
* Ventilation Index...Fair (229-373) decreasing to poor (25-44)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-87...except 75-81 ridges.
* Min humidity........15-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 1 to 5
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-31) increasing to fair (306-488) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-53.
* Max humidity........63-78 percent...except 57-66 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 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 10 to 15 mph.
* Ventilation Index...Fair (246-452) decreasing to poor (25-62)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-85...except 72-78 ridges.
* Min humidity........20-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-45) increasing to fair (279-345) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 45 to 53. Highs 84 to 89. North winds
2 to 7 mph.
.FRIDAY...Clear. Lows 49 to 57. Highs 90 to 96. Northeast winds
2 to 7 mph.
.SATURDAY...Mostly clear. Lows 54 to 61. Highs 90 to 95.
Northwest winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 54 to 61. Highs 90 to 95. Northwest
winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 53 to 59. Highs 86 to 91. Northwest
winds 2 to 7 mph.
$$
ORZ703-191130-
Warm Springs Reservation-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....48-54.
* Max humidity........63-75 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....West 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.....West around 15 mph decreasing to around 5 mph
after midnight.
* Ventilation Index...Poor to fair (198-322) decreasing to poor
(25-48) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-88...except 69-78 ridges.
* Min humidity........23-31 percent...except 31-44 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 1 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming west 1 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (26-48) increasing to fair (270-378) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....50-55.
* Max humidity........62-73 percent.
* Humidity recovery...Good.
* 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 10 to 15 mph.
* Ventilation Index...Fair (207-343) decreasing to poor (27-61)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-87...except 67-76 ridges.
* Min humidity........24-32 percent...except 33-48 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....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (27-65) increasing to fair (321-405) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 50 to 55. Highs 82 to 91. Northwest winds
2 to 7 mph.
.FRIDAY...Clear. Lows 57 to 62. Highs 87 to 96. North winds 2 to
7 mph.
.SATURDAY...Mostly clear. Lows 60 to 65. Highs 89 to 98. North
winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 59 to 64. Highs 87 to 97. Northwest
winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 56 to 61. Highs 83 to 94. West winds
2 to 7 mph.
$$
ORZ704-191130-
Northern Deschutes National Forest-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....44-49.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 6 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 to fair (147-289) decreasing to poor
(25-47) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-86...except 67-77 ridges.
* Min humidity........25-33 percent...except 33-48 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (26-52) increasing to fair (299-407) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....45-50.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West 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.....West around 15 mph decreasing to around 5 mph
after midnight.
* Ventilation Index...Poor to fair (147-299) decreasing to poor
(25-55) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-86...except 66-77 ridges.
* Min humidity........26-32 percent...except 33-48 percent ridges.
* 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.......8500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-50) increasing to fair (293-365) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 46 to 51. Highs 78 to 89. Northwest winds
1 to 6 mph.
.FRIDAY...Clear. Lows 52 to 57. Highs 82 to 94. Northeast winds
2 to 7 mph.
.SATURDAY...Mostly clear. Lows 55 to 60. Highs 83 to 96.
Northwest winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 55 to 60. Highs 81 to 95. Northwest
winds 1 to 6 mph.
.MONDAY...Mostly clear. Lows 52 to 57. Highs 78 to 92. Northwest
winds 2 to 7 mph.
$$
ORZ705-191130-
Southern Deschutes National Forest-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....40-46.
* Max humidity........83-98 percent...except 72-87 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 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.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (145-285) decreasing to poor
(25-32) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83...except 68-76 ridges.
* Min humidity........20-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming west 1 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (28-54) increasing to fair to good
(418-586) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....40-47.
* Max humidity........74-89 percent...except 62-77 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 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.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (163-367) decreasing to poor
(25-47) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-81...except 67-75 ridges.
* Min humidity........24-37 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.......9000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (25-31) increasing to fair (278-342) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 41 to 49. Highs 79 to 87. Terrain driven
winds less than 5 mph.
.FRIDAY...Clear. Lows 45 to 54. Highs 85 to 94. Northeast winds
1 to 6 mph.
.SATURDAY...Mostly clear. Lows 49 to 57. Highs 85 to 94. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 50 to 57. Highs 83 to 92. Northwest
winds 1 to 5 mph.
.MONDAY...Mostly clear. Lows 48 to 55. Highs 79 to 89. Northwest
winds 1 to 5 mph.
$$
ORZ697-191130-
Central Blue Mountains-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....43-51.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 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 5 to 10 mph.
* Ventilation Index...Poor to fair (195-273) decreasing to poor
(25-46) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 76-84 ridges.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* 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.......11000 ft agl.
* Transport winds.....West around 5 mph increasing to south around
15 mph in the afternoon.
* Ventilation Index...Poor (25-47) increasing to good to excellent
(614-888) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-52.
* Max humidity........58-71 percent.
* Humidity recovery...Good...except Moderate 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 to fair (151-231) decreasing to poor
(26-72) after midnight.
.WEDNESDAY...
* Sky/weather.........Sunny.
* Max temperature.....78-83...except 72-79 ridges.
* Min humidity........21-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (27-67) increasing to fair to good
(306-548) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 44 to 51. Highs 78 to 85. North winds
1 to 6 mph.
.FRIDAY...Clear. Lows 48 to 54. Highs 85 to 92. Terrain driven
winds less than 5 mph.
.SATURDAY...Partly cloudy. Lows 54 to 59. Highs 86 to 93. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 54 to 60. Highs 83 to 91. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 52 to 58. Highs 80 to 88. Terrain
driven winds less than 5 mph.
$$
ORZ698-191130-
Southern Blue Mountains-
216 PM PDT Mon Aug 18 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-51.
* Max humidity........71-86 percent...except 60-75 percent ridges.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Fair (242-318) decreasing to poor (25-53)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-88.
* Min humidity........11-16 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.......10000 ft agl.
* Transport winds.....West around 5 mph increasing to southwest
around 15 mph in the afternoon.
* Ventilation Index...Poor (25-44) increasing to good to excellent
(527-755) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-52.
* Max humidity........53-67 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 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 (157-241) decreasing to poor
(32-90) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-87.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 3
to 6 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (30-80) increasing to fair to good
(372-504) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Clear. Lows 46 to 52. Highs 83 to 89. North winds
2 to 7 mph.
.FRIDAY...Mostly clear. Lows 50 to 56. Highs 88 to 94. Northeast
winds 2 to 7 mph.
.SATURDAY...Partly cloudy. Lows 54 to 61. Highs 89 to 95. North
winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 55 to 61. Highs 88 to 94. West winds
1 to 5 mph.
.MONDAY...A slight chance of showers. Mostly clear. Lows 53 to
59. Highs 85 to 91. West winds 1 to 5 mph.
$$
.8-14 DAY OUTLOOK for Tuesday August 26 through Monday September 1...
A greater chance of above-normal temperatures and above-normal
precipitation.
$$