Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
219
FNUS56 KPDT 192139
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
239 PM PDT Wed Aug 19 2026
.DISCUSSION...
Dry conditions with very warm temperatures and low relative
humidities are expected through Friday. Low pressure and cold
front will move across the area late Friday night or early
Saturday morning. Thunder chances will increase, but remain low
(<20 percent) later Friday into Saturday, mainly over the
mountains. Winds will increase and become gusty on Saturday, and
RH values will increase as well. Conditions will become elevated
and possibly critical if humidity and winds overlap.
***Winds are 20 foot 10 minute averages ***
***CWR: Chance of wetting rain 0.10 or greater ***
***Ventilation Index is derived from transport wind
multiplied by the mixing height in 100`s of ft.
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.
Categories: low (< 200), moderate (200-500),
high (500-700), and very high (> 700).
-Note: Max transport winds may not occur
at the same time as max mixing height. ***
WAZ695-201245-
East Washington South Central Cascade Mountains-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. Patchy smoke in the evening.
* Min temperature.....52-58.
* Max humidity........58-73 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds up to 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 around 10 mph.
* Ventilation Index...Low (84-174) decreasing to low (25-39) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....83-91...except 74-83 ridges.
* Min humidity........20-30 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 becoming west 1 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (32-58) increasing to moderate (262-476)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-62.
* Max humidity........50-65 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest up to 5 mph after midnight.
* Ridges/upr slopes....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...Low (83-185) decreasing to low (25-39) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Max temperature.....83-92...except 75-83 ridges.
* Min humidity........21-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southeast 1
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....West around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Low (25-26) increasing to moderate to high
(301-553) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Not as warm. Mostly cloudy with a chance of showers.
Lows 55 to 63. Highs 64 to 79. West winds 4 to 9 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
46 to 53. Highs 61 to 75. West winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 46 to 52. Highs 69 to 82. West winds
1 to 6 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
50 to 56. Highs 68 to 82. West winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 54. Highs 63 to 77. West
winds 3 to 8 mph.
$$
WAZ690-201245-
Kittitas Valley-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....58-64.
* Max humidity........46-61 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.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low to moderate (170-238) decreasing to low
(36-50) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-95...except 80-90 ridges.
* Min humidity........16-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph in the morning
becoming 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...Low (42-70) increasing to moderate (303-399)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....61-67.
* Max humidity........39-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds up to 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low to moderate (164-264) decreasing to low
(37-49) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Max temperature.....89-95...except 80-89 ridges.
* Min humidity........17-22 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.....Northwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Low (25-33) increasing to low to moderate
(173-297) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy with a chance of showers. Lows 63 to
69. Highs 82 to 90. West winds 6 to 12 mph.
.SUNDAY...Mostly clear. Lows 53 to 58. Highs 75 to 83. West winds
8 to 14 mph.
.MONDAY...Mostly clear. Lows 52 to 58. Highs 80 to 87. Northwest
winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 57 to 62. Highs 82 to 90.
Northwest winds up to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 55 to 61. Highs 78 to 86.
Northwest winds 5 to 11 mph.
$$
WAZ694-201245-
Yakama Alpine District-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....51-61.
* Max humidity........52-67 percent.
* Humidity recovery...Moderate.
* 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....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (87-131) decreasing to low (25-28) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-95...except 78-90 ridges.
* Min humidity........16-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southwest 1
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (25-40) increasing to moderate (323-467)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....55-65.
* Max humidity........42-57 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.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (119-197) decreasing to low (25-30) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....85-92...except 76-88 ridges.
* Min humidity........20-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....North around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Low (25) increasing to low to moderate
(84-386) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A chance of showers. Mostly cloudy. Lows 53 to 62.
Highs 69 to 84. West winds 5 to 11 mph.
.SUNDAY...Mostly clear. Lows 44 to 52. Highs 68 to 81. West winds
5 to 11 mph.
.MONDAY...Mostly clear. Lows 45 to 53. Highs 73 to 85. Northwest
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 49 to 57. Highs 73 to 87. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 47 to 55. Highs 69 to 83. West
winds 2 to 7 mph.
$$
ORZ691-WAZ691-201245-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....57-62.
* Max humidity........43-58 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 6 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.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (53-159) decreasing to low (25-37) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-97...except 87-92 ridges.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming southwest 1
to 5 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...Low (25-59) increasing to low to moderate
(171-303) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear then becoming mostly cloudy.
* Min temperature.....61-66.
* Max humidity........38-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 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 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (76-196) decreasing to low (25-35) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....89-97...except 85-92 ridges.
* Min humidity........17-24 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 around 5 mph shifting to the
northeast in the afternoon.
* Ventilation Index...Low (25-32) increasing to low to moderate
(105-201) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 61 to
66. Highs 81 to 92. West winds 8 to 14 mph.
.SUNDAY...Mostly clear. Lows 51 to 57. Highs 78 to 85. West winds
9 to 15 mph.
.MONDAY...Mostly clear. Lows 52 to 57. Highs 83 to 89. West winds
2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 56 to 61. Highs 85 to 92. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 56 to 61. Highs 80 to 88. West
winds 4 to 9 mph.
$$
ORZ692-WAZ692-201245-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....54-63.
* Max humidity........27-40 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.......500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (45-97) decreasing to low (25-26) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....86-93...except 80-86 ridges.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....North around 5 mph shifting to the west in
the afternoon.
* Ventilation Index...Low (25-29) increasing to low to moderate
(186-274) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....57-67.
* Max humidity........30-43 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.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (53-119) decreasing to low (25-28) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....88-95...except 83-88 ridges.
* Min humidity........17-22 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.....East 5 to 10 mph.
* Ventilation Index...Low (25-28) increasing to moderate (209-469)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 59 to
68. Highs 78 to 88. West winds 1 to 6 mph.
.SUNDAY...A slight chance of showers. Mostly clear. Lows 47 to
56. Highs 71 to 81. West winds 3 to 8 mph.
.MONDAY...Mostly clear. Lows 47 to 55. Highs 77 to 86. West winds
1 to 6 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
51 to 60. Highs 78 to 88. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 60. Highs 74 to 83. West
winds 1 to 6 mph.
$$
ORZ693-WAZ693-201245-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....52-63.
* Max humidity........29-44 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 south 1
to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
after midnight.
* Ventilation Index...Low (82-136) decreasing to low (25-26) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....89-97...except 83-90 ridges.
* Min humidity........11-16 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 1 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.......10500 ft agl.
* Transport winds.....East around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Low (25-30) increasing to moderate to high
(235-551) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....55-66.
* Max humidity........30-45 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....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.......500 ft agl.
* Transport winds.....North around 10 mph shifting to the east
after midnight.
* Ventilation Index...Low (115-175) decreasing to low (25) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....91-99...except 85-91 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 5 to 10 mph.
* Ventilation Index...Low (25) increasing to moderate (341-475) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 68. Highs 83 to 93. Southwest winds
4 to 9 mph.
.SUNDAY...A slight chance of showers. Mostly clear. Lows 47 to
58. Highs 76 to 85. West winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 45 to 56. Highs 81 to 90. West winds
1 to 6 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
50 to 61. Highs 82 to 91. Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 50 to 61. Highs 79 to 88. West
winds 1 to 6 mph.
$$
ORZ701-201245-
Eastern Columbia River Gorge of Oregon-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....54-60.
* Max humidity........49-64 percent.
* Humidity recovery...Moderate.
* 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 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (125-167) decreasing to low (28-44) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke in the morning.
* Max temperature.....90-95.
* Min humidity........18-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 6 mph in the afternoon. In the eastern Columbia River
Gorge, west winds 2 to 7 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (33-71) increasing to moderate (286-342)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear then becoming mostly cloudy.
* Min temperature.....57-64.
* Max humidity........46-61 percent.
* Humidity recovery...Moderate.
* 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....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (144-192) decreasing to low (28-44) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....87-92.
* 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.......4000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (25-26) increasing to low (30-90) in the
afternoon.
.Forecast days 3 through 7......
.SATURDAY...Not as warm. A chance of showers. Mostly cloudy. Lows
55 to 62. Highs 75 to 81. West winds 7 to 13 mph.
.SUNDAY...Mostly clear. Lows 48 to 55. Highs 77 to 82. West winds
7 to 13 mph.
.MONDAY...Mostly clear. Lows 50 to 55. Highs 83 to 88. Northwest
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 53 to 59. Highs 82 to 87. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 57. Highs 78 to 83. West
winds 4 to 9 mph.
$$
ORZ702-201245-
East Slopes of the Mt. Hood National Forest-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....53-60.
* Max humidity........38-53 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.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (84-136) decreasing to low (28-38) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....89-94...except 81-89 ridges.
* Min humidity........18-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (36-54) increasing to moderate (292-382)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear then becoming mostly cloudy.
Patchy smoke in the evening.
* Min temperature.....58-65.
* Max humidity........37-51 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.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (112-190) decreasing to low (31-39) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....85-91...except 79-86 ridges.
* Min humidity........23-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(121-231) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Not as warm. A chance of showers. Mostly cloudy. Lows
52 to 61. Highs 65 to 80. West winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 45 to 51. Highs 67 to 80. West winds
3 to 8 mph.
.MONDAY...Mostly clear. Lows 47 to 54. Highs 74 to 85. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Lows
51 to 58. Highs 72 to 85. Terrain driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 55. Highs 68 to 81. West
winds up to 5 mph.
$$
ORZ695-201245-
Eagle Cap Wilderness-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....54-61.
* Max humidity........28-38 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....Northwest winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (56-138) decreasing to low (25-32) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....85-96...except 75-86 ridges.
* Min humidity........13-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 6
mph in the afternoon.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Low (25-68) increasing to moderate to very
high (475-883) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....58-64.
* Max humidity........31-42 percent.
* Humidity recovery...Poor.
* 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....North 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...Low (72-160) decreasing to low (25-37) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....87-98...except 76-88 ridges.
* Min humidity........14-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming south 2 to 5
mph in the afternoon.
* 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...Low (25-28) increasing to moderate to very
high (372-862) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
59 to 66. Highs 73 to 88. Southwest winds 6 to 12 mph.
.SUNDAY...A slight chance of showers. Mostly clear. Lows 47 to
54. Highs 67 to 82. West winds 6 to 12 mph.
.MONDAY...Mostly clear. Lows 47 to 53. Highs 71 to 86. Northwest
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 52 to 58. Highs 72 to 87. South
winds 3 to 8 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 58. Highs 70 to 84.
Southwest winds 3 to 8 mph.
$$
ORZ694-201245-
Grande Ronde Valley of Oregon-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Areas of smoke in the evening,
then patchy smoke after midnight.
* Min temperature.....52-57.
* Max humidity........38-46 percent.
* Humidity recovery...Poor.
* 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....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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (114-174) decreasing to low (25-33) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....93-98.
* Min humidity........12-17 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 north 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....North around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Low (25-30) increasing to moderate (203-355)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke in the evening.
* Min temperature.....57-62.
* Max humidity........40-48 percent.
* Humidity recovery...Poor.
* 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 3 to 7 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (114-184) decreasing to low (25-35) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....94-99.
* Min humidity........14-19 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.......8500 ft agl.
* Transport winds.....North around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Low (25) increasing to moderate (242-314) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 59 to
64. Highs 89 to 94. West winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 47 to 52. Highs 82 to 87. Northwest
winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 46 to 51. Highs 86 to 91. North
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 51 to 56. Highs 88 to 93. South
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 56. Highs 84 to 89.
Northwest winds 2 to 7 mph.
$$
ORZ699-201245-
Western Forested Blue Mountains-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke after midnight.
* Min temperature.....53-59.
* Max humidity........31-38 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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (103-197) decreasing to low (25-30) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....87-94...except 82-89 ridges.
* Min humidity........13-18 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.....East around 5 mph shifting to the west in the
afternoon.
* Ventilation Index...Low (25-39) increasing to moderate to very
high (313-705) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....57-63.
* 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.....North 5 to 10 mph.
* Ventilation Index...Low (110-194) decreasing to low (25-34) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....88-95...except 83-89 ridges.
* Min humidity........14-19 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.......13000 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Low (25) increasing to moderate to very high
(408-844) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 57 to
63. Highs 78 to 87. West winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 45 to 51. Highs 73 to 82. West winds
2 to 7 mph.
.MONDAY...Mostly clear. Lows 46 to 52. Highs 77 to 86. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 50 to 56. Highs 78 to 87. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 49 to 55. Highs 74 to 83. West
winds up to 5 mph.
$$
ORZ696-201245-
John Day Valley-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-60.
* Max humidity........31-37 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....North 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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (170-276) decreasing to low
(25-26) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke in the morning.
* Max temperature.....88-96...except 84-89 ridges.
* Min humidity........10-15 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...Low (25-30) increasing to moderate to high
(349-563) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....59-64.
* Max humidity........32-38 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....North 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.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (168-242) decreasing to low
(25-28) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....88-97...except 84-89 ridges.
* Min humidity........13-18 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.......12500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Low (25) increasing to moderate to high
(318-626) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy. Lows 58 to 64. Highs 81 to 91. West
winds 4 to 9 mph.
.SUNDAY...Mostly clear. Lows 47 to 53. Highs 77 to 86. West winds
4 to 9 mph.
.MONDAY...Mostly clear. Lows 48 to 54. Highs 82 to 91. Northeast
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 52 to 58. Highs 82 to 91.
Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 57. Highs 79 to 88. West
winds 1 to 6 mph.
$$
ORZ700-201245-
Central Mountains of Oregon-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....49-58...except 54-59 ridges.
* Max humidity........35-50 percent...except 29-34 percent ridges.
* 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....North 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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (194-366) decreasing to low
(25-38) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....90-95...except 82-89 ridges.
* Min humidity........11-16 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.......11500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (25-35) increasing to moderate to very
high (400-724) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....53-62...except 58-63 ridges.
* Max humidity........36-49 percent...except 31-38 percent ridges.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (199-401) decreasing to low
(25-34) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....88-93...except 81-88 ridges.
* Min humidity........14-21 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 becoming southwest 1
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (25) increasing to moderate to high
(331-663) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 50 to 59. Highs 81 to 86. West
winds 4 to 9 mph.
.SUNDAY...Mostly clear. Lows 40 to 49. Highs 78 to 83. West winds
5 to 11 mph.
.MONDAY...Mostly clear. Lows 43 to 51. Highs 83 to 88. North
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 46 to 55. Highs 83 to 88.
Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 53. Highs 79 to 85. West
winds 1 to 6 mph.
$$
ORZ703-201245-
Warm Springs Reservation-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Smoky in the evening, then
patchy smoke after midnight.
* Min temperature.....55-60.
* Max humidity........42-53 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low to moderate (140-252) decreasing to low
(25-35) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....90-98...except 79-88 ridges.
* Min humidity........14-21 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 west 1 to 5
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...Low (26-48) increasing to moderate (340-488)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear then becoming mostly cloudy.
Patchy smoke in the evening.
* Min temperature.....59-64.
* Max humidity........41-51 percent.
* Humidity recovery...Poor...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....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.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low to moderate (193-307) decreasing to low
(25-34) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....87-94...except 76-85 ridges.
* Min humidity........20-28 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.......6000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(108-272) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Not as warm. A chance of showers. Partly cloudy. Lows
55 to 60. Highs 72 to 86. West winds 5 to 11 mph.
.SUNDAY...Mostly clear. Lows 47 to 52. Highs 74 to 84. West winds
6 to 12 mph.
.MONDAY...Mostly clear. Lows 49 to 54. Highs 80 to 89. Northwest
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 53 to 58. Highs 78 to 90. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 56. Highs 74 to 86. West
winds 3 to 8 mph.
$$
ORZ704-201245-
Northern Deschutes National Forest-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....49-58.
* Max humidity........43-58 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds up to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low to moderate (143-259) decreasing to low
(25-26) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....90-95...except 77-87 ridges.
* Min humidity........16-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 7
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (29-49) increasing to moderate to high
(487-607) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....52-61.
* Max humidity........42-55 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West 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.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low to moderate (171-267) decreasing to low
(25-27) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....86-92...except 74-83 ridges.
* Min humidity........20-25 percent...except 24-36 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.......9000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (25-26) increasing to moderate (235-475)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Not as warm. A chance of showers. Partly cloudy. Lows
47 to 56. Highs 67 to 81. West winds 4 to 10 mph.
.SUNDAY...Mostly clear. Lows 38 to 46. Highs 70 to 83. West winds
5 to 11 mph.
.MONDAY...Mostly clear. Lows 42 to 51. Highs 75 to 88. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 45 to 54. Highs 73 to 87. West
winds up to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 51. Highs 69 to 83. West
winds 2 to 7 mph.
$$
ORZ705-201245-
Southern Deschutes National Forest-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke.
* Min temperature.....46-54...except 51-59 ridges.
* Max humidity........44-59 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....North 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.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low to moderate (174-394) decreasing to low
(25-35) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Patchy smoke.
* Max temperature.....88-93...except 78-87 ridges.
* Min humidity........12-24 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (26-48) increasing to very high (749-993)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....50-57...except 54-62 ridges.
* Max humidity........48-63 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 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (164-338) decreasing to low
(25-34) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....84-89...except 74-83 ridges.
* Min humidity........16-30 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.......12000 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Low (25-26) increasing to high to very high
(646-888) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Partly cloudy. Lows 42 to
52. Highs 70 to 82. West winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 33 to 43. Highs 73 to 83. West winds
2 to 7 mph.
.MONDAY...Mostly clear. Lows 37 to 48. Highs 77 to 87. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 40 to 50. Highs 75 to 85.
Southwest winds up to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 38 to 48. Highs 72 to 83. West
winds 1 to 6 mph.
$$
ORZ697-201245-
Central Blue Mountains-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....51-60.
* Max humidity........29-38 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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (57-233) decreasing to low
(25-38) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-92.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 6 mph.
* Ridges/upr slopes....Southwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Southeast around 5 mph increasing to
southwest around 15 mph in the afternoon.
* Ventilation Index...Low (25-49) increasing to high to very high
(699-923) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....55-63.
* Max humidity........30-39 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.......500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low to moderate (143-209) decreasing to low
(25-33) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....86-92.
* Min humidity........11-16 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....East around 5 mph increasing to south around
15 mph in the afternoon.
* Ventilation Index...Low (25-26) increasing to very high
(799-1033) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy. Lows 54 to 63. Highs 79 to 85. West
winds 4 to 9 mph.
.SUNDAY...Mostly clear. Lows 43 to 51. Highs 75 to 82. West winds
3 to 8 mph.
.MONDAY...Mostly clear. Lows 44 to 52. Highs 79 to 86. North
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 48 to 57. Highs 79 to 86.
Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 56. Highs 77 to 83. West
winds 2 to 7 mph.
$$
ORZ698-201245-
Southern Blue Mountains-
239 PM PDT Wed Aug 19 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-59.
* Max humidity........29-37 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.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (68-148) decreasing to low (36-46) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93.
* Min humidity........8-13 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 6 mph.
* Ridges/upr slopes....Southwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....South around 5 mph increasing to southwest
around 15 mph in the afternoon.
* Ventilation Index...Low (25-35) increasing to very high (737-853)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....55-62.
* Max humidity........30-38 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.......500 ft agl.
* Transport winds.....Northwest around 10 mph shifting to the
northeast after midnight.
* Ventilation Index...Low to moderate (177-255) decreasing to low
(27-37) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....88-93.
* Min humidity........10-15 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12000 ft agl.
* Transport winds.....East around 5 mph increasing to south around
15 mph in the afternoon.
* Ventilation Index...Low (25-26) increasing to high to very high
(531-889) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly cloudy. Lows 54 to 62. Highs 82 to 89. West
winds 4 to 10 mph.
.SUNDAY...Mostly clear. Lows 44 to 53. Highs 79 to 84. West winds
4 to 10 mph.
.MONDAY...Mostly clear. Lows 45 to 53. Highs 82 to 88. North
winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 48 to 57. Highs 82 to 88.
Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 56. Highs 80 to 86. West
winds 2 to 7 mph.
$$
.8-14 DAY OUTLOOK for Thursday August 27 through Wednesday September 2...
A greater chance of near normal temperatures and near normal to
above normal precipitations.
$$