


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
637 FNUS56 KPDT 291332 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 632 AM PDT Tue Jul 29 2025 ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE WA695... ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR697, 698, 699, 700, 705... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR700, 704, 705... .DISCUSSION...Elevated to critical fire weather concerns are expected Tuesday afternoon through Wednesday night due to thunderstorms producing abundant lightning over consistently dry areas. Scattered thunderstorms are expected to produce abundant lightning. While these storms are expected to produce heavy rain at times, there is 10-40% chances that there will be isolated dry thunderstorms embedded within this system that could ignite new wildfires. Gusty and erratic winds up to 40-60 mph could occur under these thunderstorms. Winds will remain diurnally driven elsewhere, with locally breezy conditions. Daytime RHs will remain low through Thursday with moderate overnight recoveries. ***Thunderstorms imply strong gusty winds*** ***Winds are 20 foot 10 minute averages*** ***CWR-chance of wetting rain 0.10 or greater*** ***Ventilation Index is derived from the transport wind multiplied by the mixing height in 100`s of feet. Index categories are a generalized indicator and users are encourage to develop criteria that are suitable and representative of dispersion conditions in their local area of interest.*** Note: Max transport winds may not occur at the same time as max mixing height. WAZ695-292330- East Washington South Central Cascade Mountains- 632 AM PDT Tue Jul 29 2025 ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....83-92...except 75-83 ridges. * Min humidity........19-29 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.....West around 5 mph. * Ventilation Index...Poor (25-83) increasing to fair to good (305-533) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....58-65. * Max humidity........40-55 percent. * Humidity recovery...Poor...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor to fair (105-323) decreasing to poor (25-77) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....85-95...except 76-85 ridges. * Min humidity........19-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph shifting to the southeast in the afternoon. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......13000 ft agl. * Transport winds.....North around 5 mph shifting to the east in the afternoon. * Ventilation Index...Poor (25-81) increasing to fair to good (254-590) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 56 to 65. Highs 71 to 85. Northwest winds 2 to 7 mph. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 52 to 59. Highs 63 to 78. Northwest winds 4 to 9 mph. .SATURDAY...A slight chance of showers and thunderstorms. Mostly clear. Lows 48 to 55. Highs 64 to 78. West winds 3 to 8 mph. .SUNDAY...Partly cloudy. Lows 44 to 52. Highs 59 to 72. West winds 4 to 9 mph. .MONDAY...Partly cloudy. Lows 45 to 51. Highs 59 to 72. West winds 3 to 8 mph. $$ WAZ690-292330- Kittitas Valley- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....92-98...except 81-93 ridges. * Min humidity........15-20 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 6 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Northwest around 5 mph shifting to the southwest in the afternoon. * Ventilation Index...Poor (48-116) increasing to fair (331-463) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....65-70. * Max humidity........32-45 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (275-437) decreasing to poor (32-106) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....93-100...except 82-95 ridges. * Min humidity........14-19 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph shifting to the east in the afternoon. * Ridges/upr slopes....North winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14000 ft agl. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor (58-154) increasing to good to excellent (537-775) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 67 to 74. Highs 87 to 95. Northwest winds 4 to 10 mph. .FRIDAY...A chance of showers and thunderstorms. Mostly cloudy. Lows 60 to 66. Highs 79 to 88. Northwest winds 5 to 11 mph. .SATURDAY...Mostly clear. Lows 57 to 62. Highs 80 to 89. Northwest winds 5 to 11 mph. .SUNDAY...Mostly clear. Lows 54 to 59. Highs 75 to 83. Northwest winds 5 to 11 mph. .MONDAY...Partly cloudy. Lows 53 to 58. Highs 75 to 83. West winds 5 to 11 mph. $$ WAZ694-292330- Yakama Alpine District- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....88-95...except 77-90 ridges. * Min humidity........17-26 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.......11000 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-38) increasing to fair (253-453) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....59-67. * Max humidity........41-56 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming northwest 1 to 6 mph after midnight. * Ridges/upr slopes....light winds less than 5 mph becoming north 2 to 7 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North around 5 mph. * Ventilation Index...Poor to fair (109-237) decreasing to poor (25-61) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....89-96...except 78-90 ridges. * Min humidity........16-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming east 1 to 5 mph in the afternoon. * Ridges/upr slopes....Northeast winds 1 to 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......11500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-65) increasing to fair to good (255-553) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 57 to 65. Highs 75 to 88. Northwest winds 2 to 7 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 52 to 59. Highs 70 to 83. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 48 to 56. Highs 70 to 84. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 45 to 53. Highs 65 to 78. West winds 3 to 8 mph. .MONDAY...Partly cloudy. Lows 46 to 53. Highs 65 to 78. West winds 2 to 7 mph. $$ ORZ691-WAZ691-292330- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....93-100...except 90-95 ridges. * Min humidity........14-19 percent. * 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....North winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....West around 5 mph shifting to the northeast in the afternoon. * Ventilation Index...Poor (27-65) increasing to fair (276-476) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....63-68. * Max humidity........39-52 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...North winds 2 to 7 mph shifting to the west 2 to 5 mph after midnight. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (203-359) decreasing to poor (25-56) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....95-102. * Min humidity........13-18 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph shifting to the north 3 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......13000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (27-75) increasing to fair (240-494) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 64 to 71. Highs 85 to 97. West winds 4 to 9 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 60 to 66. Highs 83 to 90. West winds 5 to 11 mph. .SATURDAY...Mostly clear. Lows 57 to 63. Highs 82 to 90. West winds 4 to 9 mph. .SUNDAY...Mostly clear. Lows 55 to 62. Highs 77 to 85. West winds 5 to 11 mph. .MONDAY...Partly cloudy. Lows 54 to 59. Highs 78 to 84. West winds 5 to 11 mph. $$ ORZ692-WAZ692-292330- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....85-95...except 79-84 ridges. * Min humidity........17-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-89) increasing to fair to good (461-633) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....59-67. * Max humidity........32-46 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 1 to 6 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.....Northeast 5 to 10 mph. * Ventilation Index...Fair (222-358) decreasing to poor (25-55) after midnight. .WEDNESDAY... * Sky/weather.........Mostly sunny. * Max temperature.....87-96...except 80-85 ridges. * Min humidity........18-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (25-53) increasing to fair to good (311-515) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 59 to 67. Highs 80 to 90. West winds 1 to 6 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 55 to 62. Highs 72 to 83. West winds 1 to 6 mph. .SATURDAY...A slight chance of showers and thunderstorms. Mostly clear. Lows 52 to 60. Highs 73 to 84. West winds 1 to 6 mph. .SUNDAY...Partly cloudy. Lows 50 to 57. Highs 67 to 79. West winds 2 to 7 mph. .MONDAY...Partly cloudy. Lows 47 to 55. Highs 66 to 78. West winds 2 to 7 mph. $$ ORZ693-WAZ693-292330- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....85-95...except 79-87 ridges. * Min humidity........16-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 3 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (29-95) increasing to good to excellent (533-709) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....57-66. * Max humidity........35-49 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 1 to 6 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...Fair (286-430) decreasing to poor (25-54) after midnight. .WEDNESDAY... * Sky/weather.........Mostly sunny. * Max temperature.....87-97...except 81-89 ridges. * Min humidity........17-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 5 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.......11500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-52) increasing to fair to good (326-536) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 58 to 66. Highs 83 to 93. Northwest winds 1 to 5 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 53 to 63. Highs 76 to 86. Terrain driven winds less than 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 50 to 60. Highs 76 to 86. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 49 to 59. Highs 72 to 82. Terrain driven winds less than 5 mph. .MONDAY...Partly cloudy. Lows 46 to 56. Highs 70 to 80. West winds 1 to 5 mph. $$ ORZ701-292330- Eastern Columbia River Gorge of Oregon- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....92-97. * Min humidity........18-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph...except northwest 1 to 5 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10000 ft agl. * Transport winds.....West around 5 mph shifting to the north in the afternoon. * Ventilation Index...Poor (25-85) increasing to fair (227-401) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....61-67. * Max humidity........49-64 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 6 mph...except west 2 to 7 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....West winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Fair (212-354) decreasing to poor (27-91) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....92-97. * Min humidity........19-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph...except northwest 1 to 6 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....West winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (25-98) increasing to poor to fair (184-442) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Not as warm. Mostly cloudy with a chance of showers and thunderstorms. Lows 60 to 66. Highs 80 to 86. West winds 4 to 10 mph. .FRIDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 56 to 62. Highs 80 to 85. West winds 5 to 11 mph. .SATURDAY...Mostly clear. Lows 53 to 58. Highs 79 to 84. West winds 4 to 9 mph. .SUNDAY...Partly cloudy. Lows 50 to 56. Highs 75 to 80. West winds 5 to 11 mph. .MONDAY...Partly cloudy. Lows 51 to 57. Highs 75 to 80. West winds 4 to 10 mph. $$ ORZ702-292330- East Slopes of the Mt. Hood National Forest- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....89-95...except 82-90 ridges. * Min humidity........18-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....East around 5 mph. * Ventilation Index...Poor (25-34) increasing to fair (244-422) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....57-67. * Max humidity........44-59 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.....Northwest around 10 mph. * Ventilation Index...Poor to fair (108-256) decreasing to poor (25-50) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....90-95...except 82-91 ridges. * Min humidity........20-31 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10500 ft agl. * Transport winds.....North around 5 mph shifting to the east in the afternoon. * Ventilation Index...Poor (25-37) increasing to fair to good (352-624) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Not as warm. Mostly cloudy with a chance of showers and thunderstorms. Lows 55 to 64. Highs 69 to 84. West winds 2 to 7 mph. .FRIDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 50 to 58. Highs 69 to 83. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 48 to 55. Highs 68 to 82. West winds 1 to 6 mph. .SUNDAY...Partly cloudy. Lows 45 to 53. Highs 63 to 78. West winds 2 to 7 mph. .MONDAY...Partly cloudy. Lows 46 to 53. Highs 64 to 78. West winds 2 to 7 mph. $$ ORZ695-292330- Eagle Cap Wilderness- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....82-92...except 70-81 ridges. * Min humidity........20-31 percent. * 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....20 percent (slight chance). * Mixing height.......13500 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Poor (36-154) increasing to fair to excellent (454-710) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....59-65...except 52-60 ridges. * Max humidity........38-47 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 2 to 7 mph. * Ridges/upr slopes....Northeast winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northeast 10 to 15 mph. * Ventilation Index...Fair (264-444) decreasing to poor (25-83) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....83-94...except 72-83 ridges. * Min humidity........19-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....North winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (25-92) increasing to fair (285-461) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 54 to 64. Highs 73 to 88. Northwest winds 2 to 7 mph. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 49 to 58. Highs 66 to 81. West winds 1 to 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 46 to 56. Highs 66 to 81. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 44 to 54. Highs 62 to 77. West winds 1 to 6 mph. .MONDAY...Partly cloudy. Lows 42 to 52. Highs 60 to 75. Northwest winds 2 to 7 mph. $$ ORZ694-292330- Grande Ronde Valley of Oregon- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....91-96. * Min humidity........17-22 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 3 to 8 mph. * Ridges/upr slopes....North winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......12500 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Poor (79-143) increasing to excellent (753-893) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....57-62. * Max humidity........44-54 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 3 to 8 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Fair (315-425) decreasing to poor (43-75) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....92-97. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 3 to 6 mph in the afternoon. * Ridges/upr slopes....North winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (52-88) increasing to fair to good (489-657) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 60 to 65. Highs 88 to 93. Northwest winds 2 to 7 mph. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 55 to 60. Highs 81 to 86. Northwest winds 2 to 7 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 52 to 57. Highs 82 to 87. Northwest winds 1 to 6 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 51 to 56. Highs 77 to 82. Northwest winds 1 to 6 mph. .MONDAY...Partly cloudy. Lows 49 to 54. Highs 75 to 80. Northwest winds 2 to 7 mph. $$ ORZ699-292330- Western Forested Blue Mountains- 632 AM PDT Tue Jul 29 2025 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-90...except 77-85 ridges. * Min humidity........20-26 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 6 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....20 percent (slight chance). * Mixing height.......13000 ft agl. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor (37-105) increasing to fair to good (280-676) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....55-62. * Max humidity........42-52 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor to fair (174-332) decreasing to poor (25-53) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....85-91...except 78-85 ridges. * Min humidity........19-25 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......11500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-71) increasing to fair to good (371-527) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 56 to 61. Highs 77 to 85. Northwest winds 1 to 5 mph. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 50 to 57. Highs 71 to 80. Terrain driven winds less than 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 49 to 54. Highs 72 to 81. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 47 to 53. Highs 67 to 75. Terrain driven winds less than 5 mph. .MONDAY...Partly cloudy. Lows 44 to 50. Highs 66 to 75. Terrain driven winds less than 5 mph. $$ ORZ696-292330- John Day Valley- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-95...except 82-87 ridges. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......14500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (34-92) increasing to fair to good (239-645) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....57-64. * Max humidity........45-57 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 2 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 6 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Fair (221-457) decreasing to poor (25-61) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-95...except 82-87 ridges. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......12500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-62) increasing to fair to good (394-540) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...A chance of showers and thunderstorms. Mostly cloudy. Lows 57 to 64. Highs 80 to 89. West winds 2 to 7 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 54 to 61. Highs 78 to 86. West winds 1 to 6 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 52 to 58. Highs 78 to 86. Northwest winds 1 to 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 50 to 56. Highs 72 to 80. West winds 1 to 6 mph. .MONDAY...Partly cloudy. Lows 47 to 54. Highs 72 to 80. West winds 2 to 7 mph. $$ ORZ700-292330- Central Mountains of Oregon- 632 AM PDT Tue Jul 29 2025 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-93...except 80-86 ridges. * Min humidity........15-20 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......14000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (29-79) increasing to fair to good (424-658) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and thunderstorms in the evening. * Min temperature.....53-62. * Max humidity........49-64 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......Near surface. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Fair to good (322-544) decreasing to poor (25-62) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-93...except 80-85 ridges. * Min humidity........17-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 3 to 7 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....20 percent (slight chance). * Mixing height.......12000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-54) increasing to fair to good (398-548) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 53 to 61. Highs 79 to 86. West winds 2 to 7 mph. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Lows 49 to 57. Highs 78 to 85. West winds 2 to 7 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 47 to 54. Highs 78 to 84. Northwest winds 2 to 7 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 45 to 52. Highs 72 to 79. Northwest winds 2 to 7 mph. .MONDAY...Partly cloudy. Lows 43 to 50. Highs 73 to 80. West winds 2 to 7 mph. $$ ORZ703-292330- Warm Springs Reservation- 632 AM PDT Tue Jul 29 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....89-97...except 77-87 ridges. * Min humidity........16-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northeast 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-32) increasing to fair to good (434-586) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....62-67...except 57-64 ridges. * Max humidity........46-55 percent. * Humidity recovery...Moderate. * 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....10 percent (very low chance). * Mixing height.......Near surface. * Transport winds.....North around 10 mph shifting to the west after midnight. * Ventilation Index...Fair (215-457) decreasing to poor (25-55) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....90-97...except 78-88 ridges. * Min humidity........16-22 percent...except 21-33 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northeast 1 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....North around 5 mph shifting to the east in the afternoon. * Ventilation Index...Poor (25-40) increasing to fair to good (476-664) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Not as warm. Mostly cloudy with a chance of showers and thunderstorms. Lows 58 to 64. Highs 75 to 88. West winds 3 to 8 mph. .FRIDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 53 to 60. Highs 75 to 88. West winds 4 to 9 mph. .SATURDAY...Mostly clear. Lows 50 to 56. Highs 74 to 87. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 48 to 54. Highs 70 to 82. West winds 3 to 8 mph. .MONDAY...Partly cloudy. Lows 49 to 54. Highs 70 to 83. West winds 3 to 8 mph. $$ ORZ704-292330- Northern Deschutes National Forest- 632 AM PDT Tue Jul 29 2025 ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING... .TODAY... * Sky/weather.........Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-94...except 74-84 ridges. * Min humidity........18-23 percent...except 23-36 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....10 percent (very low chance). * Mixing height.......11000 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Poor (25-56) increasing to fair to good (465-591) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of showers and thunderstorms in the evening. * Min temperature.....53-60. * Max humidity........48-61 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....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....North around 10 mph shifting to the south after midnight. * Ventilation Index...Poor to fair (177-393) decreasing to poor (25-61) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-94...except 74-84 ridges. * Min humidity........19-25 percent...except 25-40 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....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-48) increasing to fair to good (433-561) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 52 to 59. Highs 70 to 83. West winds 2 to 7 mph. .FRIDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 48 to 55. Highs 70 to 85. West winds 2 to 7 mph. .SATURDAY...Partly cloudy. Lows 46 to 52. Highs 70 to 84. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 43 to 49. Highs 65 to 78. West winds 2 to 7 mph. .MONDAY...Mostly cloudy. Lows 43 to 49. Highs 66 to 80. West winds 2 to 7 mph. $$ ORZ705-292330- Southern Deschutes National Forest- 632 AM PDT Tue Jul 29 2025 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING... .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....83-88...except 74-81 ridges. * Min humidity........21-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......12500 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Poor (45-95) increasing to good to excellent (534-766) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and thunderstorms in the evening. * Min temperature.....47-55. * Max humidity........63-78 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....40 percent (chance). * Mixing height.......Near surface. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor to fair (170-350) decreasing to poor (27-57) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....82-87...except 73-80 ridges. * Min humidity........23-34 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......10000 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (25-53) increasing to fair (262-444) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 48 to 54. Highs 70 to 80. Terrain driven winds less than 5 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 44 to 50. Highs 71 to 81. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy. Lows 42 to 48. Highs 71 to 81. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy. Lows 41 to 46. Highs 66 to 76. Northwest winds 1 to 5 mph. .MONDAY...Partly cloudy. Lows 39 to 44. Highs 67 to 77. West winds 1 to 6 mph. $$ ORZ697-292330- Central Blue Mountains- 632 AM PDT Tue Jul 29 2025 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-89...except 78-84 ridges. * Min humidity........21-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......13500 ft agl. * Transport winds.....Northeast around 5 mph shifting to the south in the afternoon. * Ventilation Index...Poor (36-112) increasing to poor to fair (123-439) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and thunderstorms in the evening. * Min temperature.....52-57. * Max humidity........53-68 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.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......Near surface. * Transport winds.....North around 10 mph. * Ventilation Index...Poor to fair (116-254) decreasing to poor (25-67) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-89...except 78-85 ridges. * Min humidity........21-26 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....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-81) increasing to fair to good (382-544) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 52 to 57. Highs 76 to 82. Northwest winds 1 to 5 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 48 to 54. Highs 72 to 79. West winds 1 to 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 47 to 52. Highs 72 to 79. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 45 to 51. Highs 67 to 74. Terrain driven winds less than 5 mph. .MONDAY...Partly cloudy. Lows 43 to 49. Highs 66 to 74. Northwest winds 1 to 5 mph. $$ ORZ698-292330- Southern Blue Mountains- 632 AM PDT Tue Jul 29 2025 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-89...except 79-84 ridges. * Min humidity........18-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......13500 ft agl. * Transport winds.....Northeast around 10 mph shifting to the south in the afternoon. * Ventilation Index...Poor (63-107) increasing to fair to good (357-579) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. * Min temperature.....53-59. * Max humidity........54-66 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.................10 percent. * Chc of lightning....40 percent (chance). * Mixing height.......Near surface. * Transport winds.....North 10 to 15 mph. * Ventilation Index...Fair (207-363) decreasing to poor (29-91) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-90. * Min humidity........18-24 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....20 percent (slight chance). * Mixing height.......11500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (30-66) increasing to fair to good (417-533) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...A chance of showers and thunderstorms. Mostly cloudy. Lows 53 to 58. Highs 79 to 85. Northwest winds 2 to 7 mph. .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 49 to 55. Highs 77 to 83. Northwest winds 2 to 7 mph. .SATURDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 48 to 54. Highs 77 to 83. Northwest winds 1 to 6 mph. .SUNDAY...Partly cloudy with a slight chance of showers. Lows 47 to 52. Highs 72 to 78. Northwest winds 1 to 6 mph. .MONDAY...Partly cloudy. Lows 44 to 50. Highs 72 to 78. Northwest winds 2 to 7 mph. $$ .8-14 DAY OUTLOOK for Tuesday August 5 through Monday August 11... Above normal temperatures and above normal precipitation. $$