FNUS56 KPDT 230955 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 255 AM PDT Sun Aug 23 2026 .DISCUSSION...Elevated fire weather conditions through the Cascade gaps today as breezy winds redevelop. High pressure aloft redevelops late tonight through Tuesday, resulting in warming and drying trend with increasing mixing heights. Breezy winds through the Cascade gaps and Columbia Basin return Wednesday, which will overlap with low relative humidity in the afternoon. ***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. *** WAZ695-232330- East Washington South Central Cascade Mountains- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Partly cloudy. Patchy smoke in the afternoon. * Max temperature.....67-75...except 58-67 ridges. * Min humidity........38-53 percent...except 49-64 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 4 to 9 mph. * Ridges/upr slopes....Northwest winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West around 15 mph. * Ventilation Index...Low to moderate (145-215) increasing to moderate to high (274-506) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Areas of smoke in the evening. Patchy smoke after midnight. * Min temperature.....46-52. * Max humidity........69-84 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low to moderate (106-208) decreasing to low (25-33) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. * Max temperature.....76-85...except 68-76 ridges. * Min humidity........27-38 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southeast 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Low (35-59) increasing to moderate (328-418) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 53 to 58. Highs 75 to 89. East winds 1 to 6 mph. .WEDNESDAY...Mostly clear. Lows 53 to 60. Highs 68 to 83. West winds 1 to 6 mph. .THURSDAY...Partly cloudy. Lows 47 to 53. Highs 60 to 75. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 43 to 50. Highs 62 to 75. West winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 43 to 50. Highs 61 to 75. West winds 2 to 7 mph. $$ WAZ690-232330- Kittitas Valley- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. Patchy smoke in the afternoon. * Max temperature.....75-83...except 67-75 ridges. * Min humidity........32-42 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 7 to 13 mph. * Ridges/upr slopes....Northwest winds 7 to 13 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest around 15 mph. * Ventilation Index...Low to moderate (139-255) increasing to high to very high (538-796) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke. * Min temperature.....52-58. * Max humidity........61-76 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 4 to 9 mph. * Ridges/upr slopes....Northwest winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Moderate (225-275) decreasing to low (31-43) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Patchy smoke. * Max temperature.....82-88...except 72-81 ridges. * Min humidity........24-29 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.......6500 ft agl. * Transport winds.....East around 5 mph. * Ventilation Index...Low (34-62) increasing to moderate (264-356) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 57 to 63. Highs 86 to 93. Northeast winds 1 to 6 mph. .WEDNESDAY...Mostly clear. Lows 60 to 66. Highs 84 to 91. West winds 3 to 8 mph. .THURSDAY...Mostly clear. Lows 54 to 60. Highs 76 to 84. West winds 5 to 11 mph. .FRIDAY...Mostly clear. Lows 50 to 56. Highs 76 to 83. West winds 4 to 9 mph. .SATURDAY...Mostly clear. Lows 51 to 57. Highs 76 to 83. West winds 5 to 11 mph. $$ WAZ694-232330- Yakama Alpine District- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....73-82...except 63-75 ridges. * Min humidity........31-46 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (92-158) increasing to moderate (247-357) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke after midnight. * Min temperature.....46-54. * Max humidity........61-76 percent. * Humidity recovery...Good. * 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 around 5 mph. * Ventilation Index...Low (74-130) decreasing to low (25-26) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. * Max temperature.....80-87...except 70-82 ridges. * Min humidity........24-34 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 becoming east 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Low (34-56) increasing to moderate (299-349) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 52 to 60. Highs 78 to 91. Northeast winds up to 5 mph. .WEDNESDAY...Mostly clear. Lows 51 to 60. Highs 73 to 86. West winds 4 to 9 mph. .THURSDAY...Mostly clear. Lows 45 to 54. Highs 67 to 81. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 41 to 50. Highs 68 to 81. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 42 to 51. Highs 67 to 80. West winds 2 to 7 mph. $$ ORZ691-WAZ691-232330- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-85. * Min humidity........27-35 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 5 to 11 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low to moderate (106-230) increasing to moderate to high (351-613) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke in the evening. Areas of smoke after midnight. * Min temperature.....52-57. * Max humidity........61-76 percent. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest 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.....Northwest 5 to 10 mph. * Ventilation Index...Low to moderate (110-204) decreasing to low (25-31) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. * Max temperature.....85-91...except 80-87 ridges. * Min humidity........20-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 4 to 9 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.......6500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Low (29-51) increasing to moderate (250-370) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 57 to 62. Highs 89 to 95. North winds 2 to 7 mph. .WEDNESDAY...Mostly clear. Lows 59 to 64. Highs 84 to 93. West winds 4 to 10 mph. .THURSDAY...Mostly clear. Lows 54 to 60. Highs 79 to 86. West winds 7 to 13 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 79 to 86. West winds 4 to 9 mph. .SATURDAY...Mostly clear. Lows 51 to 56. Highs 78 to 85. West winds 4 to 9 mph. $$ ORZ692-WAZ692-232330- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....72-81...except 66-72 ridges. * Min humidity........27-36 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (87-175) increasing to moderate to high (425-593) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....46-55. * Max humidity........52-67 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...West winds up to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest 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 10 mph shifting to the east after midnight. * Ventilation Index...Low (94-152) decreasing to low (25-26) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Patchy smoke. * Max temperature.....82-89...except 76-82 ridges. * Min humidity........18-25 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. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....East around 5 mph shifting to the southwest in the afternoon. * Ventilation Index...Low (34-58) increasing to moderate (235-369) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 52 to 62. Highs 83 to 92. East winds up to 5 mph. .WEDNESDAY...Partly cloudy. Lows 55 to 65. Highs 79 to 89. Southwest winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 50 to 60. Highs 73 to 83. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 46 to 55. Highs 72 to 82. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 45 to 55. Highs 71 to 81. West winds 1 to 6 mph. $$ ORZ693-WAZ693-232330- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....76-85...except 72-79 ridges. * Min humidity........18-25 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * 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.......8000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (66-126) increasing to high to very high (564-750) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....45-56. * Max humidity........52-67 percent...except 47-56 percent ridges. * 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....Northwest 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.....Northwest around 10 mph shifting to the east after midnight. * Ventilation Index...Low to moderate (138-202) decreasing to low (25) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. * Max temperature.....83-91...except 76-83 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.......9500 ft agl. * Transport winds.....East around 5 mph shifting to the southwest in the afternoon. * Ventilation Index...Low (26-40) increasing to moderate (276-450) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 51 to 61. Highs 86 to 96. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 64. Highs 85 to 94. South winds 4 to 10 mph. .THURSDAY...Partly cloudy. Lows 50 to 61. Highs 79 to 88. West winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 46 to 57. Highs 77 to 86. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 46 to 56. Highs 76 to 85. West winds 1 to 6 mph. $$ ORZ701-232330- Eastern Columbia River Gorge of Oregon- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....77-82. * Min humidity........32-45 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 4 to 9 mph...except northwest 5 to 11 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (73-191) increasing to moderate (270-444) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke after midnight. * Min temperature.....50-55. * Max humidity........63-78 percent. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 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 (124-168) decreasing to low (25) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Areas of smoke. * Max temperature.....84-89. * Min humidity........24-30 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.......5000 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Low (32-64) increasing to moderate (296-362) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 56 to 62. Highs 88 to 93. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly clear. Lows 54 to 60. Highs 80 to 86. West winds 4 to 9 mph. .THURSDAY...Mostly clear. Lows 50 to 56. Highs 76 to 81. West winds 6 to 12 mph. .FRIDAY...Mostly clear. Lows 46 to 52. Highs 77 to 82. West winds 4 to 9 mph. .SATURDAY...Mostly clear. Lows 47 to 53. Highs 76 to 81. West winds 4 to 9 mph. $$ ORZ702-232330- East Slopes of the Mt. Hood National Forest- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the afternoon. * Max temperature.....74-81...except 67-76 ridges. * Min humidity........32-44 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (74-134) increasing to low to moderate (181-259) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke. * Min temperature.....48-55. * Max humidity........55-70 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.....Northwest around 5 mph shifting to the east after midnight. * Ventilation Index...Low (71-125) decreasing to low (25-30) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. * Max temperature.....81-86...except 75-82 ridges. * Min humidity........24-30 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.......5500 ft agl. * Transport winds.....East around 10 mph. * Ventilation Index...Low (51-79) increasing to moderate (296-356) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Patchy smoke. Lows 55 to 62. Highs 79 to 91. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly clear. Lows 51 to 59. Highs 71 to 84. West winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 46 to 53. Highs 66 to 79. West winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 42 to 50. Highs 67 to 80. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 43 to 50. Highs 66 to 79. West winds up to 5 mph. $$ ORZ695-232330- Eagle Cap Wilderness- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....73-84...except 63-74 ridges. * Min humidity........18-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (49-91) increasing to high (514-690) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....46-53. * Max humidity........45-60 percent. * Humidity recovery...Moderate. * 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.....North 5 to 10 mph. * Ventilation Index...Low to moderate (114-200) decreasing to low (25-33) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. * Max temperature.....80-90...except 69-80 ridges. * Min humidity........15-22 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.......9500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Low (25-57) increasing to moderate to very high (419-753) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows 53 to 60. Highs 76 to 91. Southeast winds 4 to 9 mph. .WEDNESDAY...Partly cloudy. Lows 55 to 62. Highs 74 to 89. South winds 6 to 12 mph. .THURSDAY...Partly cloudy. Lows 51 to 58. Highs 70 to 85. West winds 4 to 10 mph. .FRIDAY...Mostly clear. Lows 47 to 54. Highs 69 to 84. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 47 to 53. Highs 68 to 82. West winds 2 to 7 mph. $$ ORZ694-232330- Grande Ronde Valley of Oregon- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Sunny. * Max temperature.....82-87. * Min humidity........22-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (50-90) increasing to moderate to high (445-551) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....43-50. * Max humidity........64-79 percent. * Humidity recovery...Good. * 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 8 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 (154-242) decreasing to low (25-34) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. * Max temperature.....88-93. * 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.......8000 ft agl. * Transport winds.....North around 5 mph shifting to the south in the afternoon. * Ventilation Index...Low (25-30) increasing to moderate (224-330) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 51 to 56. Highs 92 to 97. Southeast winds 3 to 8 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 59. Highs 90 to 95. South winds 2 to 7 mph. .THURSDAY...Partly cloudy. Lows 49 to 54. Highs 84 to 89. Northwest winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 44 to 50. Highs 83 to 88. Northwest winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 44 to 50. Highs 82 to 87. Northwest winds 2 to 7 mph. $$ ORZ699-232330- Western Forested Blue Mountains- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....75-82...except 70-76 ridges. * Min humidity........18-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (69-103) increasing to moderate to high (466-678) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....45-51. * Max humidity........51-66 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.....North 5 to 10 mph. * Ventilation Index...Low to moderate (128-200) decreasing to low (25-30) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. Patchy smoke. * Max temperature.....83-90...except 77-84 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. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Low (30-46) increasing to moderate to very high (375-837) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows 52 to 58. Highs 82 to 91. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 53 to 60. Highs 80 to 89. Southwest winds up to 5 mph. .THURSDAY...Partly cloudy. Lows 48 to 54. Highs 75 to 84. West winds up to 5 mph. .FRIDAY...Mostly clear. Lows 45 to 51. Highs 74 to 83. West winds up to 5 mph. .SATURDAY...Mostly clear. Lows 44 to 50. Highs 73 to 82. West winds up to 5 mph. $$ ORZ696-232330- John Day Valley- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....77-85...except 72-77 ridges. * Min humidity........16-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (47-73) increasing to moderate to high (385-567) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....48-54. * Max humidity........47-57 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds up 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.....Northeast 5 to 10 mph. * Ventilation Index...Low to moderate (159-237) decreasing to low (25-28) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. * Max temperature.....85-94...except 80-85 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 becoming north 1 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12000 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Low (25-37) increasing to moderate to very high (387-769) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows 53 to 59. Highs 87 to 96. Southeast winds 2 to 7 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 60. Highs 84 to 93. Southwest winds 1 to 6 mph. .THURSDAY...Partly cloudy. Lows 50 to 56. Highs 78 to 88. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 47 to 53. Highs 78 to 87. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 47 to 53. Highs 77 to 86. West winds 1 to 6 mph. $$ ORZ700-232330- Central Mountains of Oregon- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-83...except 71-77 ridges. * Min humidity........13-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (38-72) increasing to moderate to high (299-515) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke after midnight. * Min temperature.....43-51. * Max humidity........53-68 percent...except 44-53 percent ridges. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Low to moderate (191-297) decreasing to low (25-35) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the morning. * Max temperature.....86-91...except 79-86 ridges. * Min humidity........11-20 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming south 1 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Low (26-44) increasing to moderate to very high (318-922) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows 46 to 56. Highs 86 to 93. South winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 46 to 56. Highs 84 to 90. Southwest winds 2 to 7 mph. .THURSDAY...Partly cloudy. Lows 43 to 52. Highs 79 to 85. West winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 40 to 49. Highs 79 to 85. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 41 to 49. Highs 78 to 84. West winds 1 to 6 mph. $$ ORZ703-232330- Warm Springs Reservation- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the afternoon. * Max temperature.....78-86...except 67-75 ridges. * Min humidity........23-31 percent...except 31-45 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 5 mph shifting to the north 2 to 7 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....West around 5 mph. * Ventilation Index...Low (48-118) increasing to moderate (244-308) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke. * Min temperature.....50-55. * Max humidity........57-70 percent. * Humidity recovery...Moderate. * 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....Northwest 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.....North 5 to 10 mph. * Ventilation Index...Low to moderate (114-238) decreasing to low (25-28) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. Patchy smoke. * Max temperature.....83-91...except 74-81 ridges. * Min humidity........20-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....East winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Low (25-54) increasing to moderate (256-338) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 56 to 61. Highs 84 to 94. North winds 2 to 7 mph. .WEDNESDAY...Mostly clear. Lows 54 to 59. Highs 77 to 91. West winds 4 to 9 mph. .THURSDAY...Mostly clear. Lows 49 to 54. Highs 72 to 85. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 73 to 85. West winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 46 to 51. Highs 72 to 84. West winds 3 to 8 mph. $$ ORZ704-232330- Northern Deschutes National Forest- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....79-84...except 67-76 ridges. * Min humidity........22-28 percent...except 27-40 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (58-100) increasing to moderate (271-327) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke. * Min temperature.....43-52. * Max humidity........55-70 percent. * Humidity recovery...Good...except Moderate 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.......500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low to moderate (93-225) decreasing to low (25-30) after midnight. .MONDAY... * Sky/weather.........Mostly sunny. * Max temperature.....84-90...except 74-82 ridges. * Min humidity........21-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....East winds up to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Low (25-56) increasing to moderate (219-447) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 48 to 57. Highs 79 to 91. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly clear. Lows 45 to 54. Highs 73 to 86. West winds 3 to 8 mph. .THURSDAY...Mostly clear. Lows 40 to 49. Highs 69 to 82. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 37 to 46. Highs 69 to 82. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 38 to 47. Highs 69 to 82. West winds 2 to 7 mph. $$ ORZ705-232330- Southern Deschutes National Forest- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-83...except 67-76 ridges. * Min humidity........14-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....West winds 1 to 6 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 5 to 10 mph. * Ventilation Index...Low (43-85) increasing to moderate (319-467) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke after midnight. * Min temperature.....38-49. * Max humidity........59-74 percent...except 47-62 percent ridges. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph becoming northeast up to 5 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Low to moderate (146-308) decreasing to low (25-36) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the morning. * Max temperature.....85-90...except 75-83 ridges. * Min humidity........11-20 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.......12000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Low (30-64) increasing to high to very high (640-978) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows 41 to 52. Highs 79 to 89. Southwest winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 39 to 50. Highs 76 to 86. Southwest winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 36 to 46. Highs 72 to 84. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 33 to 44. Highs 72 to 83. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 34 to 44. Highs 72 to 82. West winds 1 to 6 mph. $$ ORZ697-232330- Central Blue Mountains- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....77-82...except 72-78 ridges. * Min humidity........13-18 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 6 mph. * Ridges/upr slopes....West winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (71-125) increasing to high to very high (638-812) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....43-51. * Max humidity........43-52 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low to moderate (198-258) decreasing to low (25-35) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Max temperature.....83-88...except 78-85 ridges. * Min humidity........12-17 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.......11500 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Low (34-54) increasing to very high (833-1041) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows 49 to 58. Highs 81 to 88. South winds 3 to 8 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 59. Highs 80 to 87. Southwest winds 2 to 7 mph. .THURSDAY...Partly cloudy. Lows 46 to 55. Highs 78 to 84. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 43 to 52. Highs 77 to 83. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 43 to 52. Highs 75 to 82. West winds 2 to 7 mph. $$ ORZ698-232330- Southern Blue Mountains- 255 AM PDT Sun Aug 23 2026 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-84. * Min humidity........10-15 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (77-111) increasing to high to very high (646-818) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....40-48...except 45-50 ridges. * Max humidity........40-51 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.....North around 10 mph. * Ventilation Index...Moderate (215-265) decreasing to low (33-45) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. * Max temperature.....84-89. * Min humidity........11-16 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming south 3 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming south 3 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 increasing to south around 15 mph in the afternoon. * Ventilation Index...Low (40-58) increasing to high to very high (673-963) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy with a slight chance of showers. Lows 48 to 57. Highs 84 to 90. South winds 3 to 8 mph. .WEDNESDAY...Partly cloudy. Lows 49 to 58. Highs 83 to 89. Southwest winds 2 to 7 mph. .THURSDAY...Partly cloudy. Lows 47 to 55. Highs 81 to 87. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 44 to 53. Highs 80 to 86. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 44 to 53. Highs 79 to 85. West winds 2 to 7 mph. $$ .8-14 DAY OUTLOOK for Sunday August 30 through Saturday September 5... A greater chance of near to above normal temperatures and above normal precipitation. $$