FNUS55 KPIH 220915 FWFPIH Fire Weather Planning Forecast for Southeast Idaho National Weather Service Pocatello ID 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .DISCUSSION... * Central Idaho Dispatch Area weather impact summary (Zones 475 and 476)... ...RED FLAG WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FIRE WEATHER ZONES 475 AND 476... A surge of moist and unstable air from the south will produce the best potential for thunderstorm activity this afternoon and evening. The thunderstorm threat will subside Sunday, except near the Wyoming border, a weaker threat continues on Monday afternoon and evening. The clouds and precipitation will have a cooling effect on the record heat of the past two days, and should increase humidity readings strongly. Wind will be gusty again on Sunday afternoon. * East Idaho Dispatch Area weather impact summary (Zones 410...411 and 413)... ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FIRE WEATHER ZONE 410... A surge of moist and unstable air from the south will produce the best potential for thunderstorm activity this afternoon and evening. The thunderstorm threat will subside Sunday, except near the Wyoming border, a weaker threat continues on Monday afternoon and evening. The clouds and precipitation will have a cooling effect on the record heat of the past two days, and should increase humidity readings strongly. Wind will be gusty again on Sunday afternoon. * South Central Idaho Dispatch Area weather impact summary (Zones 422...425 and 427)... ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FIRE WEATHER ZONES 422 425 AND 427... A surge of moist and unstable air from the south will produce the best potential for thunderstorm activity this afternoon and evening. The thunderstorm threat will subside Sunday, and a weaker threat continues on Monday afternoon and evening. The clouds and precipitation will have a cooling effect on the record heat of the past two days, and should increase humidity readings strongly. Wind will be gusty again on Sunday afternoon. IDZ475-222215- East Salmon River Mountains/Salmon NF- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Mostly cloudy. Slight chance of rain showers in the morning, then chance of showers and thunderstorms in the afternoon. * Chc of thunder.....40 percent. * Max Temperature....78-85 valleys. 69-75 ridges. 24 hr trend......8 degrees down. * Min Humidity.......29-37 percent. 24 hr trend......12 percent up. * 20ft wind.......... Valleys/lwr slopes...South 2 to 9 mph. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...40 percent. * Mixing Height......10750-11750 ft AGL. * Transport Wind.....South 10 mph increasing to southwest 20 mph in the afternoon. .TONIGHT... * Sky/weather........Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening. Slight chance of rain showers after midnight. * Chc of thunder.....20 percent. * Min Temperature....51-58. 24 hr trend......5 degrees down. * Max Humidity.......66-74 percent valleys. 70-78 percent ridges. 24 hr trend......27 percent up. * 20ft wind.......... Valleys/lwr slopes...South 2 to 8 mph. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...10 percent. * Mixing Height......1000-2000 ft AGL. * Transport Wind.....South 10 mph..SUNDAY... * Sky/weather........Partly cloudy then becoming sunny. Slight chance of rain showers in the morning. * Chc of thunder.....Zero. * Max Temperature....75-82 valleys. 65-72 ridges. 24 hr trend......3 degrees down. * Min Humidity.......17-25 percent. 24 hr trend......13 percent down. * 20ft wind.......... Valleys/lwr slopes...Southwest 10 to 15 mph. Ridges/upr slopes....Southwest 11 to 16 mph with gusts to 30 mph. * Chc Wetting Rain...Zero. * Mixing Height......12250-13250 ft AGL. * Transport Wind.....Southwest 15 mph increasing to 35 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 46 to 53. Highs 73 to 80. Southwest winds 10 to 15 mph with gusts to 25 mph. .TUESDAY...Partly cloudy. Slight chance of showers. Lows 50 to 57. Highs 72 to 79. Southwest wind 5 to 10 mph with gusts to around 20 mph. .WEDNESDAY...Partly cloudy. Lows 51 to 58. Highs 72 to 79. South winds 10 to 15 mph with gusts to 25 mph. .THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 70s. .FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the lower 70s. $$ IDZ476-222215- Lemhi and Lost River Range/Challis NF- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Mostly cloudy. Slight chance of rain showers in the morning, then chance of showers and thunderstorms in the afternoon. * Chc of thunder.....50 percent. * Max Temperature....79-86 valleys. 68-75 ridges. 24 hr trend......8 degrees down. * Min Humidity.......27-35 percent valleys. 34-42 percent ridges. 24 hr trend......13 percent up. * 20ft wind.......... Valleys/lwr slopes...South 2 to 9 mph. Ridges/upr slopes....Southwest 4 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...40 percent. * Mixing Height......10750-11750 ft AGL. * Transport Wind.....South 10 mph increasing to southwest 20 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy then becoming partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. * Chc of thunder.....20 percent. * Min Temperature....50-57. 24 hr trend......4 degrees down. * Max Humidity.......71-79 percent valleys. 75-83 percent ridges. 24 hr trend......21 percent up. * 20ft wind.......... Valleys/lwr slopes...South 2 to 8 mph. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...10 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....South 10 mph. .SUNDAY... * Sky/weather........Mostly cloudy then becoming mostly sunny. Slight chance of rain showers through the day. Slight chance of thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....77-84 valleys. 66-73 ridges. 24 hr trend......2 degrees down. * Min Humidity.......17-25 percent valleys. 22-30 percent ridges. 24 hr trend......11 percent down. * 20ft wind.......... Valleys/lwr slopes...Southwest 12 to 17 mph. Ridges/upr slopes....Southwest 13 to 18 mph with gusts to 30 mph. * Chc Wetting Rain...10 percent. * Mixing Height......12250-13250 ft AGL. * Transport Wind.....South 15 mph increasing to southwest 35 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Chance of showers. Lows 46 to 53. Highs 72 to 79. West wind 10 to 20 mph with gusts to 30 mph. .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 49 to 56. Highs 71 to 78. West wind 5 to 10 mph with gusts to 20 mph. .WEDNESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 49 to 56. Highs 71 to 78. South wind 10 to 15 mph with gusts to 25 mph. .THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 70s. .FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 70s. $$ IDZ422-222215- Sawtooth Range/Northern Sawtooth NF- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Mostly cloudy. Slight chance of rain showers in the morning, then chance of showers and thunderstorms in the afternoon. * Chc of thunder.....50 percent. * Max Temperature....81-88 valleys. 68-75 ridges. 24 hr trend......8 degrees down. * Min Humidity.......26-34 percent valleys. 33-41 percent ridges. 24 hr trend......12 percent up. * 20ft wind.......... Valleys/lwr slopes...East 2 to 7 mph shifting to the south 4 to 9 mph in the afternoon. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...30 percent. * Mixing Height......11250-12250 ft AGL. * Transport Wind.....Southeast 10 mph increasing to southwest 20 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy. Slight chance of thunderstorms in the evening. Slight chance of rain showers through the night. * Chc of thunder.....20 percent. * Min Temperature....51-58. 24 hr trend......4 degrees down. * Max Humidity.......72-80 percent. 24 hr trend......21 percent up. * 20ft wind.......... Valleys/lwr slopes...South 4 to 10 mph shifting to the north 2 to 6 mph after midnight. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...10 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....South 10 mph. .SUNDAY... * Sky/weather........Partly cloudy then becoming mostly sunny. Slight chance of rain showers in the morning. * Chc of thunder.....Zero. * Max Temperature....77-84 valleys. 65-72 ridges. 24 hr trend......4 degrees down. * Min Humidity.......17-23 percent valleys. 20-27 percent ridges. 24 hr trend......11 percent down. * 20ft wind.......... Valleys/lwr slopes...Southwest 2 to 7 mph increasing to 11 to 16 mph in the afternoon. Ridges/upr slopes....Southwest 11 to 16 mph with gusts to 30 mph. * Chc Wetting Rain...Zero. * Mixing Height......12250-13250 ft AGL. * Transport Wind.....Southwest 15 mph increasing to 30 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Partly cloudy. Slight chance of showers. Lows 48 to 55. Highs 74 to 81. West wind 10 to 20 mph with gusts to 30 mph. .TUESDAY...Partly cloudy. Slight chance of showers. Lows 50 to 57. Highs 74 to 81. West wind 5 to 10 mph with gusts to 20 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 57. Highs 73 to 80. Southwest wind 10 to 15 mph with gusts to 25 mph. .THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the mid 70s. .FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. $$ IDZ425-222215- Middle Snake River Valley/Twin Falls BLM north of the Snake River- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Partly cloudy then becoming mostly cloudy. Chance of showers and slight chance of thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....Around 93. 24 hr trend......7 degrees down. * Min Humidity.......25-33 percent. 24 hr trend......9 percent up. * 20ft wind..........East 2 to 8 mph shifting to the southwest 6 to 11 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...20 percent. * Mixing Height......12000-13000 ft AGL. * Transport Wind.....Southeast 10 mph shifting to the southwest in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy. Slight chance of thunderstorms in the evening. Slight chance of rain showers through the night. * Chc of thunder.....20 percent. * Min Temperature....Around 61. 24 hr trend......3 degrees down. * Max Humidity.......71-79 percent. 24 hr trend......18 percent up. * 20ft wind..........South 6 to 11 mph with gusts to 20 mph shifting to the east 2 to 7 mph after midnight. * Chc Wetting Rain...10 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....South 10 mph shifting to the east after midnight. .SUNDAY... * Sky/weather........Partly cloudy then becoming mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Chc of thunder.....10 percent. * Max Temperature....Around 88. 24 hr trend......4 degrees down. * Min Humidity.......21-29 percent. 24 hr trend......4 percent down. * 20ft wind..........South 2 to 7 mph with gusts to 15 mph shifting to the west 11 to 16 mph with gusts to 30 mph in the afternoon. * Chc Wetting Rain...Zero. * Mixing Height......11750-12750 ft AGL. * Transport Wind.....South 10 mph shifting to the southwest in the afternoon. .Forecast days 3 through 7...... .MONDAY...Partly cloudy. Slight chance of showers. Lows in the upper 50s. Highs in the upper 80s. Southwest wind 10 to 20 mph with gusts to 30 mph. .TUESDAY...Partly cloudy. Chance of showers. Lows in the upper 50s. Highs around 90. Southeast wind 5 to 10 mph with gusts to around 20 mph. .WEDNESDAY...Partly cloudy. Lows around 60. Highs around 90. East winds 5 to 10 mph with gusts to 20 mph. .THURSDAY...Partly cloudy. Lows in the upper 50s. Highs in the mid 80s. .FRIDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid 80s. $$ IDZ427-222215- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Partly cloudy then becoming mostly cloudy. Rain showers likely and chance of thunderstorms in the afternoon. * Chc of thunder.....40 percent. * Max Temperature....Around 90 valleys. 81-88 ridges. 24 hr trend......7 degrees down. * Min Humidity.......28-36 percent. 24 hr trend......12 percent up. * 20ft wind.......... Valleys/lwr slopes...Southwest 4 to 9 mph. Ridges/upr slopes....Southwest 5 to 10 mph with gusts to 20 mph. * Chc Wetting Rain...20 percent. * Mixing Height......11750-12750 ft AGL. * Transport Wind.....Southwest 10 to 15 mph. .TONIGHT... * Sky/weather........Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. * Chc of thunder.....20 percent. * Min Temperature....58-65. 24 hr trend......3 degrees down. * Max Humidity.......65-73 percent valleys. 57-65 percent ridges. 24 hr trend......15 percent up. * 20ft wind.......... Valleys/lwr slopes...South 2 to 9 mph. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...20 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....South 10 mph. .SUNDAY... * Sky/weather........Partly cloudy. Slight chance of rain showers in the morning. Chance of rain showers and slight chance of thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....Around 86 valleys. 78-85 ridges. 24 hr trend......4 degrees down. * Min Humidity.......27-35 percent. 24 hr trend......Little change. * 20ft wind.......... Valleys/lwr slopes...Southwest 2 to 7 mph shifting to the west 2 to 9 mph in the afternoon. Ridges/upr slopes....West 2 to 8 mph. Gusts up to 15 mph in the afternoon. * Chc Wetting Rain...10 percent. * Mixing Height......11500-12500 ft AGL. * Transport Wind.....Southwest 10 to 15 mph. .Forecast days 3 through 7...... .MONDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 57 to 64. Highs 80 to 87. Southwest wind 5 to 10 mph with gusts to 15 mph. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 56 to 63. Highs 81 to 88. Southwest wind 5 to 10 mph with gusts to 15 mph. .WEDNESDAY...Partly cloudy. Lows 58 to 65. Highs 81 to 88. South winds 5 to 10 mph with gusts to 20 mph. .THURSDAY...Partly cloudy. Lows around 60. Highs in the lower 80s. .FRIDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. $$ IDZ410-222215- Upper Snake River Valley/Idaho Falls BLM- 315 AM MDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .Today... * Sky/weather........Mostly cloudy. Chance of showers and thunderstorms in the afternoon. * Chc of thunder.....40 percent. * Max Temperature....83-90. 24 hr trend......7 degrees down. * Min Humidity.......28-36 percent. 24 hr trend......10 percent up. * 20ft wind..........East 2 to 7 mph shifting to the southwest 5 to 10 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...20 percent. * Mixing Height......11500-12500 ft AGL. * Transport Wind.....Southeast 10 mph increasing to southwest 20 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy then becoming partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening. Slight chance of rain showers after midnight. * Chc of thunder.....20 percent. * Min Temperature....53-59. 24 hr trend......5 degrees down. * Max Humidity.......75-83 percent. 24 hr trend......18 percent up. * 20ft wind..........South 6 to 11 mph with gusts to 20 mph shifting to the northeast 2 to 7 mph after midnight. * Chc Wetting Rain...10 percent. * Mixing Height......1000-2000 ft AGL. * Transport Wind.....Southwest 15 mph shifting to the east after midnight. .SUNDAY... * Sky/weather........Partly cloudy. Slight chance of showers and thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....81-88. 24 hr trend......2 degrees down. * Min Humidity.......23-31 percent. 24 hr trend......5 percent down. * 20ft wind..........Southeast 2 to 7 mph with gusts to 15 mph shifting to the southwest 12 to 17 mph with gusts to 30 mph in the afternoon. * Chc Wetting Rain...10 percent. * Mixing Height......11250-12250 ft AGL. * Transport Wind.....Southeast 10 mph increasing to southwest 20 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Partly cloudy. Lows 51 to 58. Highs 80 to 87. Southwest winds 10 to 20 mph with gusts to 30 mph. .TUESDAY...Partly cloudy. Slight chance of showers. Lows 52 to 58. Highs 80 to 87. South wind 5 to 10 mph with gusts to 15 mph. .WEDNESDAY...Partly cloudy. Lows 52 to 59. Highs 80 to 87. East winds 10 to 15 mph with gusts to 20 mph. .THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. .FRIDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 80s. $$ IDZ411-222215- Centennial Mountains and Snake River Range/Targhee NF- 315 AM MDT Sat Aug 22 2026 .Today... * Sky/weather........Mostly cloudy. Slight chance of rain showers in the morning, then chance of showers and thunderstorms in the afternoon. * Chc of thunder.....50 percent. * Max Temperature....Around 84 valleys. 73-80 ridges. 24 hr trend......9 degrees down. * Min Humidity.......39-47 percent. 24 hr trend......16 percent up. * 20ft wind.......... Valleys/lwr slopes...East 2 to 6 mph shifting to the southwest 2 to 7 mph in the afternoon. Ridges/upr slopes....South 2 to 9 mph with gusts to 15 mph. * Chc Wetting Rain...20 percent. * Mixing Height......10250-11250 ft AGL. * Transport Wind.....Southeast 10 mph increasing to southwest 25 mph in the afternoon. .TONIGHT... * Sky/weather........Cloudy then becoming partly cloudy. Chance of showers and thunderstorms in the evening. * Chc of thunder.....50 percent. * Min Temperature....50-57. 24 hr trend......4 degrees down. * Max Humidity.......86-94 percent valleys. 78-86 percent ridges. 24 hr trend......19 percent up. * 20ft wind.......... Valleys/lwr slopes...Southeast 2 to 6 mph in the evening becoming light. Ridges/upr slopes....South 2 to 7 mph. Gusts up to 15 mph in the evening. * Chc Wetting Rain...40 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....Southwest 15 mph in the evening. .SUNDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Chance of showers and thunderstorms in the afternoon. * Chc of thunder.....40 percent. * Max Temperature....Around 82 valleys. 71-78 ridges. 24 hr trend......2 degrees down. * Min Humidity.......35-43 percent. 24 hr trend......4 percent down. * 20ft wind.......... Valleys/lwr slopes...Southwest 8 to 13 mph. Ridges/upr slopes....Southwest 8 to 13 mph. Gusts up to 15 mph increasing to 25 mph in the afternoon. * Chc Wetting Rain...20 percent. * Mixing Height......9500-10500 ft AGL. * Transport Wind.....South 10 mph increasing to southwest 20 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Partly cloudy. Lows 48 to 55. Highs 70 to 77. Southwest winds 10 to 15 mph with gusts to 30 mph. .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 48 to 55. Highs 71 to 78. South wind 5 to 10 mph with gusts to 20 mph. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 48 to 55. Highs 71 to 78. Southeast wind 10 to 15 mph with gusts to 25 mph. .THURSDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 70s. .FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 70s. $$ IDZ413-222215- Caribou Range/Caribou NF- 315 AM MDT Sat Aug 22 2026 .Today... * Sky/weather........Mostly cloudy. Chance of showers and thunderstorms in the afternoon. * Chc of thunder.....50 percent. * Max Temperature....85-92 valleys. 77-84 ridges. 24 hr trend......6 degrees down. * Min Humidity.......28-36 percent valleys. 32-40 percent ridges. 24 hr trend......10 percent up. * 20ft wind.......... Valleys/lwr slopes...Southeast 3 to 9 mph shifting to the southwest 5 to 11 mph in the afternoon. Ridges/upr slopes....South 2 to 8 mph shifting to the southwest 4 to 10 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...30 percent. * Mixing Height......11500-12500 ft AGL. * Transport Wind.....South 10 mph shifting to the southwest in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy then becoming partly cloudy. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. * Chc of thunder.....20 percent. * Min Temperature....54-61. 24 hr trend......3 degrees down. * Max Humidity.......73-81 percent valleys. 77-85 percent ridges. 24 hr trend......13 percent up. * 20ft wind.......... Valleys/lwr slopes...Northwest 3 to 9 mph shifting to the southeast 2 to 6 mph after midnight. Ridges/upr slopes....West 2 to 8 mph with gusts to 15 mph shifting to the south 2 to 7 mph after midnight. * Chc Wetting Rain...20 percent. * Mixing Height......1250-2250 ft AGL. * Transport Wind.....West 10 mph shifting to the south after midnight. .SUNDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Chance of showers and thunderstorms in the afternoon. * Chc of thunder.....40 percent. * Max Temperature....82-89 valleys. 74-81 ridges. 24 hr trend......2 degrees down. * Min Humidity.......28-36 percent valleys. 32-40 percent ridges. 24 hr trend......Little change. * 20ft wind.......... Valleys/lwr slopes...South 2 to 6 mph shifting to the southwest 4 to 10 mph in the afternoon. Ridges/upr slopes....South 2 to 7 mph shifting to the southwest 5 to 10 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...10 percent. * Mixing Height......11500-12500 ft AGL. * Transport Wind.....South 10 mph increasing to southwest 20 mph in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows 53 to 60. Highs 78 to 85. South wind 5 to 10 mph with gusts to 20 mph. .TUESDAY...Partly cloudy. Chance of showers. Lows 52 to 59. Highs 78 to 85. East wind 5 to 10 mph with gusts to 15 mph. .WEDNESDAY...Partly cloudy. Lows 53 to 60. Highs 79 to 86. Southeast wind 10 to 15 mph with gusts to 20 mph. .THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. .FRIDAY...Partly cloudy. Lows in the mid 50s. Highs around 80. $$ .OUTLOOK from Saturday August 29 to Friday September 4: Moderate confidence of above normal temperatures. Weak confidence of near to below normal precipitation. Messick $$