269
FNUS55 KREV 211907
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
1207 PM PDT WED OCT 21 2026
DISCUSSION
A PACIFIC STORM BRINGS WIDESPREAD SIGNIFICANT RAIN (0.25"+), MOUNTAIN SNOW,
AND THUNDERSTORMS THIS AFTERNOON THROUGH THURSDAY NIGHT. POCKETS OF HEAVY
RAIN FROM THUNDERSTORMS TODAY AND THURSDAY MAY LEAD TO PONDING, MUDDY ROADWAYS,
AND MINOR FLOODING IN POOR DRAINAGE AREAS OR RECENT BURN SCARS. PRECIPITATION
CHANCES TAPER OFF FRIDAY MORNING. INCREASED N/NW GUSTS ACCOMPANY A COLD
FRONTAL PASSAGE EARLY FRIDAY. COOL AND DRY WEATHER RETURNS THIS WEEKEND
INTO NEXT WEEK, WITH CHILLY NIGHTS AND GUSTY NE RIDGE WINDS.
NOTE: THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS.
NOTE: MIXING HEIGHTS ARE IN FEET ABOVE GROUND LEVEL OF THE VALLEY FLOORS.
NOTE: PLEASE SEE OPERATING PLAN FOR DETAILED ZONE DESCRIPTIONS
HTTPS://WWW.WEATHER.GOV/WRH/FIRE?WFO=REV
NVZ420-221445-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN CHANCE OF SHOWERS AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........39-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........72-82%.
* 24 HR TREND......16% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 30 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......1300-1800 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING. SLIGHT
CHANCE OF THUNDERSTORMS. SHOWERS LIKELY IN
THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........54-62.
* MID SLOPE........48-58.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........46-56%.
* MID SLOPE........57-67%.
* 24 HR TREND......16% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1000-1500 FT AGL INCREASING TO 2800-3800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........SHOWERS LIKELY IN THE EVENING, THEN SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...50%.
* MIN TEMPERATURE....
* VALLEYS..........30-40.
* MID SLOPE........34-43.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........68-78%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 30 MPH
INCREASING TO 15 TO 25 MPH WITH GUSTS TO 45
MPH AFTER MIDNIGHT.
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 50 MPH.
* MIXING HEIGHT......1700-2200 FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH INCREASING TO 15 TO 25 MPH
AFTER MIDNIGHT.
* VENTILATION........GOOD INCREASING TO VERY GOOD AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY. SLIGHT
CHANCE OF SHOWERS IN THE MORNING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........51-61.
* MID SLOPE........47-57.
* MIN HUMIDITY.......
* VALLEYS..........19-29%.
* MID SLOPE........30-40%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 13 TO 20 MPH WITH GUSTS TO 35
MPH DECREASING TO 9 TO 17 MPH WITH GUSTS TO 30
MPH IN THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 17 MPH. GUSTS TO 40 MPH
DECREASING TO 25 MPH LATE IN THE AFTERNOON.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 3200-4200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 20 MPH.
* VENTILATION........GOOD.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 19-29. NORTH WINDS 7 TO 12 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 53-63. LOWS 19-29. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 58-68. LOWS 22-32. SLOPE
WINDS.
TUESDAY
CLEAR. HIGHS 56-66. LOWS 24-34.
WEDNESDAY
PARTLY CLOUDY. HIGHS 55-65.
NVZ421-221445-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SNOW SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........26-36.
* MID SLOPE........38-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........72-82%.
* 24 HR TREND......9% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH. GUSTS TO 40 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......1400-1900 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........42-52.
* 24 HR TREND......6 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........52-62%.
* 24 HR TREND......5% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN
THE MORNING.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 3200-4200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...20%.
* MIN TEMPERATURE....
* VALLEYS..........21-31.
* MID SLOPE........34-44.
* MAX HUMIDITY.......
* VALLEYS..........81-91%.
* MID SLOPE........70-80%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 7 TO 12 MPH WITH GUSTS TO 20 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......1300-1800 FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........FAIR.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS IN THE MORNING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........43-53.
* MIN HUMIDITY.......
* VALLEYS..........34-44%.
* MID SLOPE........36-46%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 9 TO 14 MPH IN
THE AFTERNOON.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 3000-4000 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 15-25. NORTH WINDS 9 TO 14 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 54-64. LOWS 15-25. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 58-68. LOWS 21-31. SOUTHWEST
WINDS 8 TO 13 MPH.
TUESDAY THROUGH WEDNESDAY
PARTLY CLOUDY. HIGHS 56-66. LOWS 21-31.
CAZ272-221445-
GREATER LAKE TAHOE AND TRUCKEE AREA-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN CHANCE OF SHOWERS AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...60%.
* MIN TEMPERATURE....
* VALLEYS..........28-38.
* MID SLOPE........32-42.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........94-100%.
* MID SLOPE........94-100%.
* 24 HR TREND......7% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH. GUSTS TO 40 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......900-1400 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........43-48.
* MID SLOPE........40-50.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........71-81%.
* MID SLOPE........74-84%.
* 24 HR TREND......14% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST 10 TO 20 MPH IN
THE AFTERNOON.
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 2300-3300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........SHOWERS LIKELY IN THE EVENING, THEN SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...45%.
* MIN TEMPERATURE....
* VALLEYS..........24-34.
* MID SLOPE........28-38.
* MAX HUMIDITY.......
* VALLEYS..........89-99%.
* MID SLOPE........83-93%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING WEST 9 TO 16 MPH
WITH GUSTS TO 30 MPH IN THE LATE EVENING AND
OVERNIGHT.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH INCREASING TO 20 TO 30
MPH AFTER MIDNIGHT. GUSTS TO 45 MPH INCREASING
TO 50 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1600-2100 FT AGL DECREASING TO 1000-1500 FT
AGL AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........GOOD.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY. CHANCE OF
SHOWERS IN THE MORNING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........49-55.
* MID SLOPE........42-52.
* MIN HUMIDITY.......
* VALLEYS..........34-44%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 45 MPH
DECREASING TO 30 MPH IN THE LATE MORNING AND
AFTERNOON.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2900-3900 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 15-25. DOWNSLOPE 2 TO 5 MPH BECOMING
EAST 9 TO 16 MPH IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
CLEAR. HIGHS 52-60. LOWS 15-25. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 53-62. LOWS 20-30. SLOPE
WINDS.
TUESDAY THROUGH WEDNESDAY
PARTLY CLOUDY. HIGHS 52-60. LOWS 21-31.
NVZ423-221445-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...35%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........41-51.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........60-70%.
* 24 HR TREND......19% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH SHIFTING TO THE SOUTH 15
TO 20 MPH LATE IN THE NIGHT. GUSTS TO 35 MPH
INCREASING TO 50 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1500-2500 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SHOWERS IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........57-65.
* MID SLOPE........53-63.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........56-66%.
* 24 HR TREND......26% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 7 TO 12
MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 45
MPH.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2400-3400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...60%.
* MIN TEMPERATURE....
* VALLEYS..........30-40.
* MID SLOPE........36-46.
* MAX HUMIDITY.......
* VALLEYS..........80-90%.
* MID SLOPE........65-75%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 17 MPH WITH GUSTS TO 30 MPH
SHIFTING TO THE WEST 13 TO 20 MPH WITH GUSTS
TO 35 MPH IN THE MORNING.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH. GUSTS TO 35 MPH
INCREASING TO 45 MPH IN THE MORNING.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 1600-2500 FT
AGL AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH INCREASING TO 15 TO 25 MPH
AFTER MIDNIGHT.
* VENTILATION........FAIR INCREASING TO GOOD AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY. CHANCE OF
SHOWERS IN THE MORNING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...25%.
* MAX TEMPERATURE....
* VALLEYS..........54-62.
* MID SLOPE........48-58.
* MIN HUMIDITY.......
* VALLEYS..........26-36%.
* MID SLOPE........29-39%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 17 MPH WITH GUSTS TO 25
MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 40 MPH IN
THE MORNING.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 3000-4000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 20 MPH.
* VENTILATION........GOOD.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 18-28. NORTH WINDS 9 TO 14 MPH.
SATURDAY
CLEAR. HIGHS 56-62. LOWS 18-28. SLOPE WINDS.
SUNDAY
CLEAR. HIGHS 60-66. LOWS 21-31. SLOPE WINDS.
MONDAY
PARTLY CLOUDY. HIGHS 61-67. LOWS 22-32. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 59-65. LOWS 22-32.
WEDNESDAY
PARTLY CLOUDY. HIGHS 58-64.
NVZ429-221445-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS LIKELY IN THE EVENING. SLIGHT CHANCE
OF THUNDERSTORMS. CHANCE OF SHOWERS AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...50%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........40-50.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........72-82%.
* 24 HR TREND......10% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 8 TO 13 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH. GUSTS TO 25 MPH.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 20 MPH INCREASING TO SOUTH
20 TO 30 MPH AFTER MIDNIGHT, THEN DECREASING
TO 10 TO 20 MPH LATE IN THE NIGHT. GUSTS TO 40
MPH INCREASING TO 55 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1500-2000 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SHOWERS IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MAX TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........49-59.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........50-60%.
* MID SLOPE........53-63%.
* 24 HR TREND......14% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 7 TO 12
MPH IN THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 55 MPH
DECREASING TO 25 MPH.
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 3200-4200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........SHOWERS LIKELY IN THE EVENING, THEN SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........31-41.
* MID SLOPE........36-46.
* MAX HUMIDITY.......
* VALLEYS..........81-91%.
* MID SLOPE........72-82%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 17 MPH WITH GUSTS TO 35 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 40
MPH INCREASING TO 20 TO 30 MPH WITH GUSTS TO
45 MPH IN THE MORNING.
* MIXING HEIGHT......1600-2100 FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS IN THE MORNING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...25%.
* MAX TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........47-57.
* MIN HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 17 MPH WITH GUSTS TO 30
MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 45 MPH
DECREASING TO 30 MPH IN THE LATE MORNING AND
AFTERNOON.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 3300-4300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........GOOD INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 21-31. NORTH WINDS 9 TO 15 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 52-62. LOWS 21-31. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 59-69. LOWS 22-32. SOUTH WINDS
10 TO 15 MPH.
TUESDAY
CLEAR. HIGHS 57-67. LOWS 23-33.
WEDNESDAY
PARTLY CLOUDY. HIGHS 56-66.
CAZ270-278-NVZ458-221445-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........38-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........71-81%.
* 24 HR TREND......29% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 5 TO 10 MPH WITH GUSTS TO 20 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
LATE EVENING AND OVERNIGHT.
* MIXING HEIGHT......2400-3400 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........CLOUDY. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........50-58.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........47-57%.
* MID SLOPE........56-66%.
* 24 HR TREND......28% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH
WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH
LATE IN THE AFTERNOON.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 2300-3300 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........SHOWERS IN THE EVENING, THEN SNOW SHOWERS
LIKELY AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........24-34.
* MID SLOPE........31-41.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........70-80%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
INCREASING TO NORTHWEST 19 TO 30 MPH WITH
GUSTS TO 45 MPH IN THE LATE EVENING AND
OVERNIGHT.
* RIDGE TOP........NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50
MPH.
* MIXING HEIGHT......1700-2200 FT AGL.
* TRANSPORT WINDS....NORTHWEST 20 TO 30 MPH.
* VENTILATION........GOOD.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........50-60.
* MID SLOPE........45-55.
* MIN HUMIDITY.......
* VALLEYS..........19-29%.
* MID SLOPE........23-33%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 18 MPH. GUSTS TO 30 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 45
MPH.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 2700-3700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 15 TO 25 MPH.
* VENTILATION........GOOD.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 16-26. NORTH WINDS 9 TO 14 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 53-63. LOWS 16-26. SLOPE WINDS.
SUNDAY THROUGH MONDAY
PARTLY CLOUDY. HIGHS 56-66. LOWS 20-30.
SOUTHWEST WINDS 8 TO 13 MPH.
TUESDAY
CLEAR. HIGHS 54-64. LOWS 21-31.
WEDNESDAY
PARTLY CLOUDY. HIGHS 54-63.
CAZ271-221445-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........28-38.
* MID SLOPE........37-47.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........89-99%.
* MID SLOPE........87-97%.
* 24 HR TREND......19% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH
UNTIL EARLY MORNING.
* MIXING HEIGHT......2000-3000 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........49-57.
* MID SLOPE........46-56.
* 24 HR TREND......12 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........65-75%.
* MID SLOPE........65-75%.
* 24 HR TREND......38% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 2100-3100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........SHOWERS IN THE EVENING, THEN CHANCE OF SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...45%.
* MIN TEMPERATURE....
* VALLEYS..........21-31.
* MID SLOPE........31-41.
* MAX HUMIDITY.......
* VALLEYS..........86-96%.
* MID SLOPE........80-90%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 15 MPH DECREASING TO 5 TO 10 MPH
IN THE MORNING. GUSTS TO 20 MPH INCREASING TO
40 MPH IN THE LATE EVENING AND EARLY MORNING,
THEN DECREASING TO 30 MPH IN THE MORNING.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH. GUSTS TO 35 MPH
INCREASING TO 40 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1400-1900 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........GOOD.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........46-56.
* MIN HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........26-36%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 7 TO 12 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH. GUSTS TO 40 MPH
DECREASING TO 25 MPH IN THE LATE MORNING AND
AFTERNOON.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2700-3700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....NORTH 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 12-22. DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 55-65. LOWS 12-22. EAST WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 57-67. LOWS 16-26. SOUTH WINDS 10 TO
15 MPH.
MONDAY
PARTLY CLOUDY. HIGHS 54-64. LOWS 16-26. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 54-64. LOWS 16-26.
WEDNESDAY
PARTLY CLOUDY. HIGHS 53-63.
CAZ274-221445-
SOUTHERN MONO COUNTY-
1207 PM PDT WED OCT 21 2026
TONIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...60%.
* MIN TEMPERATURE....
* VALLEYS..........25-35.
* MID SLOPE........32-42.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........89-99%.
* MID SLOPE........79-89%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHEAST WINDS 5 TO 10 MPH WITH GUSTS TO 20 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 55 MPH.
* MIXING HEIGHT......1400-1900 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...35%.
* MAX TEMPERATURE....
* VALLEYS..........45-55.
* MID SLOPE........41-50.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........54-64%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 35 MPH.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 3100-4100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS IN THE EVENING. CHANCE OF
SNOW SHOWERS AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...15%.
* MIN TEMPERATURE....
* VALLEYS..........20-30.
* MID SLOPE........26-36.
* MAX HUMIDITY.......
* VALLEYS..........85-95%.
* MID SLOPE........73-83%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING SOUTHWEST 7 TO 12
MPH WITH GUSTS TO 20 MPH AFTER MIDNIGHT.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH IN THE
LATE EVENING AND OVERNIGHT.
* MIXING HEIGHT......1300-1800 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........FAIR.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS
IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........42-52.
* MIN HUMIDITY.......
* VALLEYS..........37-47%.
* MID SLOPE........43-53%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 5 TO 10 MPH
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 3000-4000 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING CLEAR.
LOWS 17-27. NORTH WINDS 9 TO 14 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 51-61. LOWS 17-27. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 56-66. LOWS 20-30. SLOPE
WINDS.
TUESDAY THROUGH WEDNESDAY
PARTLY CLOUDY. HIGHS 54-64. LOWS 22-32.
.8 TO 14 DAY OUTLOOK FOR (THU OCT 29 THROUGH WED NOV 4)
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
=
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