Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
544
FNUS56 KPDT 212144
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
244 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR
OR703 FOR WIND AND LOW RELATIVE HUMIDITY...
.DISCUSSION...A hot and dry pattern will continue to build across
the region through middle of next week. North to east Winds will
generally be light each day, however locally breezy winds and very
low relative humidity will result in critical conditions in
portions of north central Oregon. Focus will then shift to a low
potential (10-20%) of thunderstorms each afternoon starting Sunday
through middle of next week from the central Oregon Cascades to
the eastern mountains.
***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.
WAZ695-221130-
East Washington South Central Cascade Mountains-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-58.
* Max humidity........35-47 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming east 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Poor (75-159) decreasing to poor (29-75)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-89...except 73-80 ridges.
* Min humidity........16-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 2 to 7 mph.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....East around 10 mph.
* Ventilation Index...Poor (60-138) increasing to fair to good
(336-526) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-62.
* Max humidity........33-44 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East around 10 mph.
* Ventilation Index...Poor to fair (128-214) decreasing to poor
(31-77) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....86-94...except 78-86 ridges.
* Min humidity........17-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming east 2 to 7
mph in the afternoon.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....East around 10 mph.
* Ventilation Index...Poor (29-71) increasing to fair (222-366) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 61 to 67. Highs 82 to 95. East
winds 1 to 5 mph.
.MONDAY...Partly cloudy. Lows 61 to 67. Highs 79 to 93. West
winds 1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 60 to 66. Highs 79 to 93.
Northwest winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 57 to 64. Highs 77 to 91. West
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 55 to 62. Highs 73 to 87.
Northwest winds 2 to 7 mph.
$$
WAZ690-221130-
Kittitas Valley-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-63.
* Max humidity........32-46 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
north 2 to 7 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming north 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (100-166) decreasing to poor (33-75)
after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....87-94...except 76-88 ridges.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 3 to 8 mph.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (80-164) increasing to fair to good
(441-577) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....60-66.
* Max humidity........30-42 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 10 to 15 mph.
* Ventilation Index...Poor to fair (172-242) decreasing to poor
(41-91) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-98...except 81-93 ridges.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 3 to 8 mph.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (47-101) increasing to fair (347-491) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 65 to 72. Highs 93 to 100. North
winds 2 to 7 mph.
.MONDAY...Partly cloudy. Lows 66 to 73. Highs 92 to 100.
Northwest winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 66 to 72. Highs 92 to 99.
Northwest winds 2 to 7 mph.
.WEDNESDAY...Mostly clear. Lows 64 to 69. Highs 91 to 98. North
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 63 to 69. Highs 87 to 95.
Northwest winds 2 to 7 mph.
$$
WAZ694-221130-
Yakama Alpine District-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....53-60.
* Max humidity........32-43 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
north 1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northeast 2 to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (97-157) decreasing to poor (26-64)
after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....85-93...except 75-86 ridges.
* Min humidity........14-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (45-129) increasing to fair (283-479) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....58-64.
* Max humidity........30-42 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (107-193) decreasing to poor (27-81)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....90-97...except 80-90 ridges.
* Min humidity........14-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (26-80) increasing to fair (236-406) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 63 to 69. Highs 85 to 97. North
winds 1 to 5 mph.
.MONDAY...Partly cloudy. Lows 62 to 68. Highs 84 to 97. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 62 to 67. Highs 84 to 97. West
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 59 to 66. Highs 82 to 95. West
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 57 to 63. Highs 78 to 90. West
winds 1 to 6 mph.
$$
ORZ691-WAZ691-221130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-61.
* Max humidity........37-52 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (108-196) decreasing to poor (26-48)
after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....91-96...except 86-91 ridges.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 4 to 9 mph.
* Ridges/upr slopes....Northeast winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (32-82) increasing to fair (282-486) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....59-65.
* Max humidity........33-48 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (119-219) decreasing to poor
(25-57) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....93-100.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 3
to 7 mph in the afternoon.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (25-56) increasing to fair (228-404) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 64 to 71. Highs 94 to 100. North
winds 2 to 7 mph.
.MONDAY...Partly cloudy. Lows 65 to 70. Highs 95 to 100. West
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 65 to 70. Highs 95 to 101. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 64 to 69. Highs 93 to 99. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 63 to 68. Highs 88 to 95.
Southwest winds 2 to 7 mph.
$$
ORZ692-WAZ692-221130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-61.
* Max humidity........38-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (103-179) decreasing to poor (25-55)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....84-93...except 78-84 ridges.
* Min humidity........14-19 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.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (27-55) increasing to poor to fair
(160-260) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-65.
* Max humidity........30-43 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming east 2
to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (68-126) decreasing to poor (25-48)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-98...except 83-89 ridges.
* Min humidity........12-17 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.....Southeast around 5 mph shifting to the
northwest in the afternoon.
* Ventilation Index...Poor (25-36) increasing to poor to fair
(121-273) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 62 to 69. Highs 84 to 94. West
winds 1 to 5 mph.
.MONDAY...Mostly cloudy. Lows 61 to 69. Highs 83 to 95. West
winds 1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 60 to 68. Highs 83 to 94. West
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 59 to 66. Highs 81 to 93. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
58 to 66. Highs 78 to 89. Southwest winds 1 to 5 mph.
$$
ORZ693-WAZ693-221130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....50-60.
* Max humidity........40-55 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 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....North 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.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (151-235) decreasing to poor
(25-53) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-94...except 79-87 ridges.
* Min humidity........10-15 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.......9000 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (25-50) increasing to poor to fair
(182-272) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-63...except 59-64 ridges.
* Max humidity........31-43 percent.
* Humidity recovery...Poor.
* 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....North winds 2 to 6 mph shifting to the south
2 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (101-167) decreasing to poor (25-48)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-99...except 84-91 ridges.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the
northwest in the afternoon.
* Ventilation Index...Poor (25-48) increasing to poor to fair
(187-417) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 60 to 68. Highs 87 to 96. West
winds 1 to 6 mph.
.MONDAY...Mostly cloudy. Lows 59 to 68. Highs 84 to 95. West
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 58 to 67. Highs 85 to 95. West
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 66. Highs 83 to 94. Northwest winds
1 to 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 55 to 65. Highs 81 to 90. West winds 1 to
5 mph.
$$
ORZ701-221130-
Eastern Columbia River Gorge of Oregon-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....57-62.
* Max humidity........35-46 percent.
* Humidity recovery...Poor.
* 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.....East 5 to 10 mph.
* Ventilation Index...Poor (113-195) decreasing to poor (25-71)
after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....91-96.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming east 3 to 8
mph in the afternoon. In the eastern Columbia River Gorge,
east winds 4 to 9 mph.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....East 10 to 15 mph.
* Ventilation Index...Poor (31-109) increasing to fair to good
(449-605) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....62-67.
* Max humidity........30-45 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph. In the eastern
Columbia River Gorge, northeast winds 2 to 7 mph.
* Ridges/upr slopes....East winds 1 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.....East around 10 mph.
* Ventilation Index...Poor to fair (181-249) decreasing to poor
(25-72) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....93-98.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming east 2 to 6
mph in the afternoon. In the eastern Columbia River Gorge,
east winds 2 to 7 mph.
* Ridges/upr slopes....light less than 5 mph becoming east 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....East around 5 mph increasing to around 15 mph
in the afternoon.
* Ventilation Index...Poor (25-63) increasing to fair (351-487) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 66 to 71. Highs 94 to 99. Terrain
driven winds less than 5 mph.
.MONDAY...Partly cloudy. Lows 65 to 70. Highs 93 to 98. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 64 to 69. Highs 94 to 99. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 62 to 67. Highs 91 to 96.
Northwest winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 60 to 65. Highs 86 to 91. West
winds 2 to 7 mph.
$$
ORZ702-221130-
East Slopes of the Mt. Hood National Forest-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-62.
* Max humidity........32-40 percent.
* Humidity recovery...Poor.
* 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.....East around 10 mph.
* Ventilation Index...Poor (95-197) decreasing to poor (25-66)
after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....87-93...except 80-88 ridges.
* Min humidity........14-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming east 2 to 5
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....East 10 to 15 mph.
* Ventilation Index...Poor (33-117) increasing to fair (241-463) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....61-66.
* Max humidity........27-34 percent.
* Humidity recovery...Poor.
* 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.....East 10 to 15 mph.
* Ventilation Index...Poor to fair (95-223) decreasing to poor
(25-68) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....90-96...except 83-92 ridges.
* Min humidity........14-20 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.......5500 ft agl.
* Transport winds.....East 10 to 15 mph.
* Ventilation Index...Poor (25-60) increasing to fair (251-425) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 64 to 71. Highs 85 to 96. Terrain
driven winds less than 5 mph.
.MONDAY...Partly cloudy. Lows 62 to 69. Highs 83 to 96. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 60 to 67. Highs 83 to 97. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 66. Highs 80 to 94. Terrain
driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 55 to 62. Highs 75 to 89. Terrain
driven winds less than 5 mph.
$$
ORZ695-221130-
Eagle Cap Wilderness-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....52-58...except 47-55 ridges.
* Max humidity........40-49 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (122-234) decreasing to poor
(25-69) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-93...except 72-82 ridges.
* Min humidity........13-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph.
* Ridges/upr slopes....North winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-62) increasing to poor to fair
(185-265) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....58-64...except 53-60 ridges.
* Max humidity........28-36 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 1 to 5 mph.
* Ridges/upr slopes....Northeast winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (79-177) decreasing to poor (25-59)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....87-97...except 76-87 ridges.
* Min humidity........13-19 percent.
* 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.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (25-47) increasing to fair (218-466) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 59 to 67. Highs 76 to 91. Northwest
winds 1 to 5 mph.
.MONDAY...Mostly cloudy. Lows 56 to 65. Highs 74 to 89. Northwest
winds 1 to 5 mph.
.TUESDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 53 to 64. Highs 73 to 88. North winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 52 to 62. Highs 72 to 87. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 51 to 61. Highs 69 to 84. Terrain
driven winds less than 5 mph.
$$
ORZ694-221130-
Grande Ronde Valley of Oregon-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........51-65 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.....North 5 to 10 mph.
* Ventilation Index...Fair (211-251) decreasing to poor (43-73)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-96.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 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.......7500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (38-64) increasing to fair (244-292) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-58.
* Max humidity........38-50 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 3 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.....North 5 to 10 mph.
* Ventilation Index...Poor to fair (162-202) decreasing to poor
(37-59) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....95-100.
* Min humidity........10-15 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.......9500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (28-38) increasing to poor (99-197) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 60 to 65. Highs 91 to 96. North
winds 1 to 5 mph.
.MONDAY...Mostly cloudy. Lows 60 to 65. Highs 89 to 94. Northwest
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 59 to 64. Highs 90 to 95.
Northwest winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 58 to 63. Highs 88 to 93. Northwest winds
1 to 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 62. Highs 86 to 91. Southwest winds
1 to 5 mph.
$$
ORZ699-221130-
Western Forested Blue Mountains-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-57.
* Max humidity........40-55 percent.
* Humidity recovery...Moderate.
* 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.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (120-204) decreasing to poor
(25-52) after midnight.
.FRIDAY...
* Sky/weather.........Sunny.
* Max temperature.....85-91...except 79-86 ridges.
* Min humidity........12-18 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.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-51) increasing to fair (223-309) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-62.
* Max humidity........29-39 percent.
* Humidity recovery...Poor.
* 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....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (85-165) decreasing to poor (25-51)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....90-96...except 83-90 ridges.
* Min humidity........12-17 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.......12000 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-36) increasing to fair (228-498) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 61 to 66. Highs 81 to 90. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 58 to 64. Highs 80 to 89. Terrain driven
winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 63. Highs 80 to 90. Terrain driven
winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 55 to 62. Highs 79 to 88. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 54 to 60. Highs 75 to 84. Terrain driven
winds less than 5 mph.
$$
ORZ696-221130-
John Day Valley-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-58.
* Max humidity........40-51 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 5 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.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (172-262) decreasing to poor
(28-58) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-96...except 83-88 ridges.
* Min humidity........10-15 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northeast 2
to 7 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (28-56) increasing to fair (218-320) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....58-64.
* Max humidity........30-39 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (166-262) decreasing to poor
(29-67) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....92-100...except 87-92 ridges.
* Min humidity........10-15 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.......12000 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-47) increasing to fair to good
(252-506) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 64 to 69. Highs 86 to 95. East
winds 1 to 5 mph.
.MONDAY...Mostly cloudy. Lows 61 to 67. Highs 86 to 95. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 59 to 65. Highs 86 to 95. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 59 to 64. Highs 85 to 94. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 63. Highs 81 to 90. Terrain driven
winds less than 5 mph.
$$
ORZ700-221130-
Central Mountains of Oregon-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-56...except 52-57 ridges.
* Max humidity........39-51 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 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.....Northeast around 10 mph.
* Ventilation Index...Fair (222-318) decreasing to poor (26-50)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-96...except 83-90 ridges.
* Min humidity........10-15 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 3
to 8 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming east 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Poor (25-51) increasing to fair to good
(313-547) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....53-61...except 58-63 ridges.
* Max humidity........31-40 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 3 to 8 mph.
* Ridges/upr slopes....Northeast winds 1 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.....Northeast around 10 mph.
* Ventilation Index...Fair (205-341) decreasing to poor (25-53)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....92-97...except 86-92 ridges.
* 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.......10500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-38) increasing to fair to good
(243-533) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 59 to 66. Highs 86 to 94. North
winds 2 to 7 mph.
.MONDAY...Partly cloudy. Lows 57 to 65. Highs 86 to 94. North
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 55 to 63. Highs 86 to 94.
Northwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 54 to 62. Highs 84 to 93. Northwest winds
1 to 6 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 52 to 61. Highs 81 to 89. West winds 2 to
7 mph.
$$
ORZ703-221130-
Warm Springs Reservation-
244 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR
WIND AND LOW RELATIVE HUMIDITY...
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-61.
* Max humidity........34-40 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (184-292) decreasing to poor
(30-54) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-96...except 78-86 ridges.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 4
to 10 mph in the afternoon.
* Ridges/upr slopes....East winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northeast 10 to 15 mph.
* Ventilation Index...Poor (29-71) increasing to fair (325-453) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....61-66.
* Max humidity........28-33 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 10 to 15 mph.
* Ventilation Index...Poor to fair (182-310) decreasing to poor
(33-63) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....91-98...except 81-89 ridges.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2
to 6 mph in the afternoon.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (25-41) increasing to fair (239-343) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 65 to 70. Highs 89 to 98. North
winds 2 to 7 mph.
.MONDAY...Partly cloudy. Lows 64 to 69. Highs 88 to 98. Northwest
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 62 to 67. Highs 88 to 98. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 61 to 66. Highs 86 to 96. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 58 to 63. Highs 81 to 92. West
winds 2 to 7 mph.
$$
ORZ704-221130-
Northern Deschutes National Forest-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-56.
* Max humidity........37-45 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (194-290) decreasing to poor
(27-63) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-95...except 78-86 ridges.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 3
to 7 mph in the afternoon.
* Ridges/upr slopes....East winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....East around 10 mph.
* Ventilation Index...Poor (25-67) increasing to fair (300-410) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-61.
* Max humidity........29-36 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North 10 to 15 mph.
* Ventilation Index...Poor to fair (174-310) decreasing to poor
(29-69) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....92-98...except 80-89 ridges.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Poor (25-45) increasing to poor to fair
(192-272) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 59 to 64. Highs 83 to 96. Northwest
winds 1 to 5 mph.
.MONDAY...Partly cloudy. Lows 58 to 64. Highs 82 to 95. West
winds 1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 57 to 62. Highs 82 to 96. West
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 56 to 61. Highs 80 to 93.
Northwest winds 1 to 5 mph.
.THURSDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 53 to 58. Highs 75 to 88. West winds 1 to
6 mph.
$$
ORZ705-221130-
Southern Deschutes National Forest-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-54.
* Max humidity........41-55 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
north 1 to 5 mph after midnight.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Fair (228-360) decreasing to poor (29-65)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93...except 79-88 ridges.
* Min humidity........12-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming east 2 to 5
mph in the afternoon.
* Ridges/upr slopes....East winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Poor (38-82) increasing to good to excellent
(545-759) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....51-59.
* Max humidity........33-46 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
north 1 to 5 mph after midnight.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (161-335) decreasing to poor
(25-66) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....90-95...except 80-88 ridges.
* Min humidity........14-19 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....East winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-37) increasing to fair to good
(366-532) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 54 to 61. Highs 83 to 91. Terrain
driven winds less than 5 mph.
.MONDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 53 to 60. Highs 81 to 89. Terrain driven
winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 51 to 58. Highs 81 to 89. Terrain driven
winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 50 to 57. Highs 79 to 87. Terrain driven
winds less than 5 mph.
.THURSDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 49 to 55. Highs 75 to 83. Terrain driven winds less
than 5 mph.
$$
ORZ697-221130-
Central Blue Mountains-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-55.
* Max humidity........39-49 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 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.....Northeast around 5 mph.
* Ventilation Index...Poor to fair (128-222) decreasing to poor
(25-54) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-92...except 81-87 ridges.
* Min humidity........9-14 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.....Northeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (25-55) increasing to fair (316-438) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-61.
* Max humidity........28-35 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming east 1
to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Poor (98-182) decreasing to poor (25-59)
after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....89-94...except 84-90 ridges.
* Min humidity........10-15 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.......11500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-45) increasing to fair to good
(437-691) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 59 to 64. Highs 79 to 86. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 55 to 61. Highs 78 to 86. Terrain driven
winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 52 to 59. Highs 78 to 86. Terrain driven
winds less than 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 52 to 58. Highs 77 to 84. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 51 to 57. Highs 73 to 81. Terrain
driven winds less than 5 mph.
$$
ORZ698-221130-
Southern Blue Mountains-
244 PM PDT Thu Aug 21 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-55.
* Max humidity........35-43 percent.
* Humidity recovery...Poor.
* 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.....North around 10 mph.
* Ventilation Index...Poor to fair (156-238) decreasing to poor
(26-66) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93.
* Min humidity........7-12 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.....Northeast around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (35-71) increasing to fair to good
(264-540) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....51-59...except 56-61 ridges.
* Max humidity........26-32 percent.
* Humidity recovery...Poor.
* 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.....East around 10 mph.
* Ventilation Index...Poor to fair (91-217) decreasing to poor
(28-72) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....89-96.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming southeast 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....East around 10 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-53) increasing to fair to good
(390-598) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly cloudy. Lows 59 to 65. Highs 83 to 89. Northwest
winds 1 to 5 mph.
.MONDAY...A slight chance of showers and thunderstorms. Mostly
cloudy. Lows 56 to 61. Highs 83 to 88. Northwest winds 1 to
5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 53 to 59. Highs 82 to 88. Northwest winds
1 to 5 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 54 to 59. Highs 81 to 86. Terrain driven
winds less than 5 mph.
.THURSDAY...A chance of showers and a slight chance of
thunderstorms. Partly cloudy. Lows 51 to 56. Highs 78 to 83.
Terrain driven winds less than 5 mph.
$$
.8-14 DAY OUTLOOK for Friday August 29 through Thursday September 4...
A greater chance of above normal temperatures and above normal
precipitation.
$$