577
FNUS55 KREV 211113
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
313 AM PST SUN DEC 21 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 AM PST MONDAY
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
DISCUSSION
VERY STRONG WINDS ARE LIKELY ACROSS THE REGION TODAY, WITH THE
HIGHEST WINDS EXPECTED THIS AFTERNOON AND EVENING. ADDITIONALLY,
HEAVY RAIN THROUGHOUT THE SIERRA MAY LEAD TO LOCALIZED FLOODING
TODAY INTO MONDAY. HEAVY SNOW ABOVE 8,000 FEET IS ALSO LIKELY.
ADDITIONAL STORMS ARE THEN EXPECTED LATE TUESDAY THROUGH AFTER
CHRISTMAS DAY BUT CONFIDENCE IS MIXED IN HOW MUCH RAIN AND SNOW WILL
ACCUMULATE.
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
NVZ420-220045-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
313 AM PST SUN DEC 21 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........48-58.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........39-49%.
* MID SLOPE........43-53%.
* 24 HR TREND......11% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 45 MPH
INCREASING TO SOUTHWEST 30 TO 40 MPH WITH
GUSTS TO 65 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH. GUSTS TO 80 MPH
INCREASING TO 85 MPH LATE IN THE AFTERNOON.
* CHC WETTING RAIN...40%.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 5000-6000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 25 TO 35 MPH INCREASING TO 40 TO 60
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........37-44.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........75-85%.
* MID SLOPE........67-77%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 60
MPH DECREASING TO 12 TO 18 MPH WITH GUSTS TO
30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH. GUSTS TO 75 MPH
DECREASING TO 60 MPH IN THE MORNING.
* CHC WETTING RAIN...45%.
* MIXING HEIGHT......2300-3300 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH DECREASING TO 20 TO 30
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO GOOD AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........51-59.
* MID SLOPE........45-55.
* MIN HUMIDITY.......
* VALLEYS..........47-57%.
* MID SLOPE........53-63%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 25
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 60
MPH.
* CHC WETTING RAIN...35%.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 1600-2100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN. LOWS 30-40. SOUTH
WINDS 9 TO 14 MPH UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN. HIGHS 53-61. LOWS 30-40.
SOUTH WINDS 10 TO 15 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
RAIN AND SNOW. HIGHS 41-51. LOWS
24-34. SOUTH WINDS 10 TO 20 MPH.
FRIDAY
RAIN LIKELY AND A CHANCE OF SNOW. HIGHS 40-48. LOWS 20-30.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AND RAIN. HIGHS
39-47.
NVZ421-220045-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
313 AM PST SUN DEC 21 2025
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
..HIGH WIND WARNING IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........SNOW LIKELY AND A SLIGHT CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........46-56.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........28-38%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 50 MPH
INCREASING TO SOUTHWEST 30 TO 45 MPH WITH
GUSTS TO 70 MPH.
* RIDGE TOP........SOUTHWEST WINDS 45 TO 65 MPH. GUSTS TO 100 MPH
INCREASING TO 105 MPH LATE IN THE AFTERNOON.
* CHC WETTING RAIN...45%.
* MIXING HEIGHT......1800-2800 FT AGL INCREASING TO 5000-6000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH INCREASING TO 45 TO 65
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........SNOW AND A CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........30-40.
* MID SLOPE........36-46.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........71-81%.
* MID SLOPE........51-61%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 65
MPH DECREASING TO 12 TO 18 MPH WITH GUSTS TO
40 MPH.
* RIDGE TOP........SOUTHWEST WINDS 35 TO 55 MPH WITH GUSTS TO 95
MPH.
* CHC WETTING RAIN...55%.
* MIXING HEIGHT......2400-3400 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 35 TO 45 MPH DECREASING TO 20 TO 30
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO GOOD AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........SNOW IN THE MORNING. CHANCE OF RAIN. CHANCE
OF SNOW IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........43-53.
* MIN HUMIDITY.......
* VALLEYS..........33-43%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 17 MPH INCREASING TO 12 TO
18 MPH LATE IN THE AFTERNOON. GUSTS TO 35 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 70
MPH.
* CHC WETTING RAIN...55%.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 3000-4000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH INCREASING TO 25 TO 35
MPH IN THE AFTERNOON.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
MONDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN IN THE EVENING. CHANCE
OF SNOW. LOWS 28-38. SOUTH WINDS 9 TO 17 MPH.
TUESDAY
RAIN AND SNOW. HIGHS 49-59. LOWS 26-36. SOUTH WINDS 10 TO
20 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
SNOW AND RAIN. HIGHS 39-49. LOWS
20-30. SOUTH WINDS 10 TO 20 MPH.
FRIDAY
SNOW AND RAIN. HIGHS 38-48. LOWS 13-23.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 36-46.
CAZ272-220045-
GREATER LAKE TAHOE AND TRUCKEE AREA-
313 AM PST SUN DEC 21 2025
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........40-45.
* MID SLOPE........38-46.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........68-78%.
* 24 HR TREND......11% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50
MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 50 MPH WITH GUSTS TO 95
MPH INCREASING TO 45 TO 60 MPH WITH GUSTS TO
95 MPH IN THE AFTERNOON.
* CHC WETTING RAIN...85%.
* MIXING HEIGHT......1500-2500 FT AGL INCREASING TO 3800-4800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 35 TO 55 MPH.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........RAIN AND SNOW. SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..10%.
* MIN TEMPERATURE....
* VALLEYS..........29-39.
* MID SLOPE........29-38.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........95-100%.
* MID SLOPE........87-97%.
* 24 HR TREND......5% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50
MPH DECREASING TO 12 TO 18 MPH WITH GUSTS TO
40 MPH.
* RIDGE TOP........SOUTHWEST WINDS 35 TO 55 MPH. GUSTS TO 85 MPH
DECREASING TO 70 MPH IN THE MORNING.
* CHC WETTING RAIN...90%.
* MIXING HEIGHT......1900-2900 FT AGL DECREASING TO 900-1400 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH.
* VENTILATION........EXCELLENT DECREASING TO VERY GOOD AFTER
MIDNIGHT.
MONDAY
* SKY/WEATHER........RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........40-46.
* MID SLOPE........35-43.
* MIN HUMIDITY.......
* VALLEYS..........76-86%.
* MID SLOPE........67-77%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 35 MPH
DECREASING TO 6 TO 11 MPH WITH GUSTS TO 20 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 70
MPH.
* CHC WETTING RAIN...80%.
* MIXING HEIGHT......1100-1600 FT AGL.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........VERY GOOD.
EXTENDED
MONDAY NIGHT
RAIN AND SNOW LIKELY IN THE EVENING, THEN CHANCE OF
RAIN AND SNOW AFTER MIDNIGHT. LOWS 28-38. SOUTHWEST WINDS 9 TO
14 MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW. HIGHS 42-48. LOWS
26-36. SOUTH WINDS 10 TO 15 MPH.
WEDNESDAY
SNOW AND RAIN. HIGHS 34-40. LOWS 23-33. SOUTH WINDS
10 TO 15 MPH.
CHRISTMAS DAY
SNOW. HIGHS 33-39. LOWS 22-32. SOUTH WINDS 10 TO
15 MPH.
FRIDAY
SNOW. HIGHS 32-39. LOWS 17-27.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 33-40.
NVZ423-220045-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
313 AM PST SUN DEC 21 2025
TODAY
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........57-65.
* MID SLOPE........53-63.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........26-36%.
* MID SLOPE........32-42%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 10 TO 17 MPH WITH GUSTS TO 35 MPH
INCREASING TO SOUTHWEST 20 TO 30 MPH WITH
GUSTS TO 45 MPH.
* RIDGE TOP........SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 75
MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 6200-7200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH INCREASING TO 30 TO 50
MPH IN THE AFTERNOON.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........39-46.
* MID SLOPE........39-46.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........67-77%.
* MID SLOPE........55-65%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 45
MPH DECREASING TO 9 TO 17 MPH WITH GUSTS TO 30
MPH AFTER MIDNIGHT.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 70
MPH.
* CHC WETTING RAIN...15%.
* MIXING HEIGHT......3400-4400 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........EXCELLENT DECREASING TO FAIR AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........54-60.
* MID SLOPE........48-58.
* MIN HUMIDITY.......
* VALLEYS..........44-54%.
* MID SLOPE........49-59%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 50 MPH.
* CHC WETTING RAIN...15%.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 1700-2700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
CLOUDY. CHANCE OF RAIN. LOWS 35-42. SOUTH WINDS
8 TO 13 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN. HIGHS 54-62. LOWS 35-45.
SOUTH WINDS 10 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW. HIGHS 48-54.
LOWS 30-40. SOUTH WINDS 10 TO 20 MPH.
CHRISTMAS DAY
RAIN AND SNOW LIKELY. HIGHS 48-56. LOWS 26-36.
SOUTH WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLOUDY. CHANCE OF RAIN AND A SLIGHT CHANCE OF SNOW.
HIGHS 45-53. LOWS 23-33.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW. HIGHS
44-50.
NVZ429-220045-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
313 AM PST SUN DEC 21 2025
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........54-64.
* 24 HR TREND......5 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........27-37%.
* MID SLOPE........29-39%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 12 TO 18 MPH WITH GUSTS TO 40 MPH
INCREASING TO SOUTHWEST 20 TO 35 MPH WITH
GUSTS TO 55 MPH.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 35 MPH. GUSTS TO 75 MPH
INCREASING TO 85 MPH LATE IN THE AFTERNOON.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 5300-6300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 15 TO 25 MPH INCREASING TO SOUTHWEST 30
TO 40 MPH IN THE AFTERNOON.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........38-48.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........65-75%.
* MID SLOPE........52-62%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 55
MPH BECOMING SOUTH 9 TO 17 MPH WITH GUSTS TO
30 MPH AFTER MIDNIGHT.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH. GUSTS TO 80 MPH
DECREASING TO 60 MPH IN THE MORNING.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......3200-4200 FT AGL DECREASING TO 600-1000 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH DECREASING TO 15 TO 20
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO FAIR AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........50-60.
* MIN HUMIDITY.......
* VALLEYS..........35-45%.
* MID SLOPE........33-43%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 14 MPH.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 55 MPH.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 1600-2100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE EVENING.
LOWS 31-41. SOUTH WINDS 8 TO 13 MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN. HIGHS 54-64. LOWS 31-41.
SOUTHEAST WINDS 10 TO 20 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
RAIN AND SNOW. HIGHS 46-56. LOWS
25-35. SOUTH WINDS 10 TO 20 MPH.
FRIDAY THROUGH SATURDAY
MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW.
HIGHS 42-52. LOWS 24-34.
CAZ278-220045-
EASTERN LASSEN COUNTY-
313 AM PST SUN DEC 21 2025
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........RAIN LIKELY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........42-52.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........69-79%.
* 24 HR TREND......16% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH INCREASING TO 20 TO 35 MPH WITH GUSTS TO
55 MPH IN THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 75
MPH.
* CHC WETTING RAIN...60%.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 3800-4800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH INCREASING TO 35 TO 55
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........RAIN LIKELY IN THE EVENING, THEN CHANCE OF
RAIN AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........30-40.
* MID SLOPE........32-40.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........85-95%.
* MID SLOPE........81-91%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50
MPH DECREASING TO 10 TO 17 MPH WITH GUSTS TO
30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 65
MPH.
* CHC WETTING RAIN...50%.
* MIXING HEIGHT......2500-3500 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH DECREASING TO 20 TO 30
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO GOOD AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........45-55.
* MID SLOPE........41-51.
* MIN HUMIDITY.......
* VALLEYS..........56-66%.
* MID SLOPE........66-76%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 25
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 55
MPH.
* CHC WETTING RAIN...15%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 2700-3700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
RAIN AND SNOW LIKELY IN THE EVENING, THEN RAIN AND
SNOW AFTER MIDNIGHT. LOWS 31-40. SOUTH WINDS 9 TO 14 MPH UNTIL EARLY
MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
TUESDAY
CHANCE OF RAIN AND SNOW. HIGHS 47-57. LOWS 29-39. SOUTH
WINDS 10 TO 15 MPH.
WEDNESDAY
RAIN AND SNOW. HIGHS 39-49. LOWS 27-37. SOUTH WINDS
10 TO 20 MPH.
CHRISTMAS DAY
SNOW AND RAIN. HIGHS 38-46. LOWS 23-33. SOUTH WINDS
10 TO 15 MPH.
FRIDAY
SNOW AND RAIN LIKELY. HIGHS 36-44. LOWS 17-27.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 36-44.
CAZ270-NVZ458-220045-
SURPRISE VALLEY CALIFORNIA-NORTHERN WASHOE COUNTY-
313 AM PST SUN DEC 21 2025
TODAY
* SKY/WEATHER........CLOUDY. CHANCE OF RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........46-52.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........54-64%.
* MID SLOPE........65-75%.
* 24 HR TREND......15% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 45 MPH
SHIFTING TO THE SOUTHWEST 20 TO 35 MPH WITH
GUSTS TO 55 MPH IN THE LATE MORNING AND
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 75
MPH.
* CHC WETTING RAIN...55%.
* MIXING HEIGHT......1500-2500 FT AGL INCREASING TO 4200-5200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH INCREASING TO 35 TO 55
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........RAIN LIKELY IN THE EVENING, THEN RAIN AND SNOW
LIKELY AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........31-41.
* MID SLOPE........31-41.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........81-91%.
* MID SLOPE........82-92%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 35 MPH WITH GUSTS TO 50
MPH DECREASING TO 12 TO 18 MPH WITH GUSTS TO
35 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH WITH GUSTS TO 70
MPH.
* CHC WETTING RAIN...40%.
* MIXING HEIGHT......2300-3300 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH DECREASING TO 20 TO 30
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO GOOD AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........43-51.
* MIN HUMIDITY.......
* VALLEYS..........56-66%.
* MID SLOPE........56-66%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH. GUSTS TO 30 MPH
DECREASING TO 25 MPH IN THE LATE MORNING AND
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH. GUSTS TO 60 MPH
DECREASING TO 45 MPH IN THE AFTERNOON.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 3100-4100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
CHANCE OF RAIN AND SNOW. LOWS 32-41. SOUTH WINDS
9 TO 14 MPH.
TUESDAY
CHANCE OF RAIN AND SNOW. HIGHS 48-58. LOWS 31-41. SOUTH
WINDS 10 TO 15 MPH.
WEDNESDAY
RAIN AND SNOW LIKELY. HIGHS 41-51. LOWS 28-38. SOUTH
WINDS 10 TO 20 MPH.
CHRISTMAS DAY
SNOW AND RAIN. HIGHS 39-49. LOWS 26-36. SOUTH WINDS
10 TO 20 MPH.
FRIDAY
SNOW AND RAIN LIKELY. HIGHS 37-47. LOWS 20-30.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 36-46.
CAZ271-220045-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
313 AM PST SUN DEC 21 2025
..WIND ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........RAIN.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........44-52.
* MID SLOPE........42-50.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........70-80%.
* 24 HR TREND......13% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 45
MPH INCREASING TO 20 TO 30 MPH WITH GUSTS TO
50 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 75
MPH.
* CHC WETTING RAIN...90%.
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 3600-4600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 30 TO 40 MPH INCREASING TO 30 TO 50
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........SHOWERS IN THE EVENING. SLIGHT CHANCE OF
THUNDERSTORMS. RAIN AFTER MIDNIGHT.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........29-39.
* MID SLOPE........31-41.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........89-99%.
* MID SLOPE........89-99%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 19 TO 30 MPH WITH GUSTS TO 45
MPH DECREASING TO 9 TO 17 MPH WITH GUSTS TO 35
MPH AFTER MIDNIGHT.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 70
MPH INCREASING TO 20 TO 35 MPH WITH GUSTS TO
65 MPH AFTER MIDNIGHT.
* CHC WETTING RAIN...60%.
* MIXING HEIGHT......2300-3300 FT AGL DECREASING TO 1200-1700 FT
AGL AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 25 TO 35 MPH.
* VENTILATION........EXCELLENT DECREASING TO VERY GOOD AFTER
MIDNIGHT.
MONDAY
* SKY/WEATHER........CLOUDY. CHANCE OF RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........43-51.
* MID SLOPE........39-49.
* MIN HUMIDITY.......
* VALLEYS..........66-76%.
* MID SLOPE........65-75%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 25
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH. GUSTS TO 60 MPH
DECREASING TO 45 MPH IN THE AFTERNOON.
* CHC WETTING RAIN...50%.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 2000-3000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
MONDAY NIGHT
RAIN AND SNOW. LOWS 26-36. SOUTHWEST WINDS 7 TO
12 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
TUESDAY
RAIN AND SNOW. HIGHS 42-52. LOWS 25-35. SOUTH WINDS 10 TO
15 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
SNOW AND RAIN. HIGHS 35-45. LOWS
21-31. SOUTH WINDS 10 TO 20 MPH.
FRIDAY
CHANCE OF SNOW AND RAIN. HIGHS 36-44. LOWS 16-26.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 37-45.
CAZ274-220045-
SOUTHERN MONO COUNTY-
313 AM PST SUN DEC 21 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 AM PST MONDAY
TODAY
* SKY/WEATHER........PARTLY CLOUDY. SNOW LIKELY IN THE MORNING.
CHANCE OF RAIN. CHANCE OF SNOW IN THE
AFTERNOON.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........46-56.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........26-36%.
* MID SLOPE........29-39%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH INCREASING TO 30 TO 40 MPH WITH GUSTS TO
60 MPH.
* RIDGE TOP........SOUTHWEST WINDS 35 TO 55 MPH. GUSTS TO 85 MPH
INCREASING TO 90 MPH IN THE AFTERNOON.
* CHC WETTING RAIN...25%.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 4000-5000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH INCREASING TO 35 TO 55
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........28-38.
* MID SLOPE........30-40.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........71-81%.
* MID SLOPE........52-62%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 20 TO 35 MPH WITH GUSTS TO 60
MPH DECREASING TO 15 TO 25 MPH WITH GUSTS TO
35 MPH AFTER MIDNIGHT.
* RIDGE TOP........SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 80
MPH.
* CHC WETTING RAIN...35%.
* MIXING HEIGHT......2100-3100 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 25 TO 35 MPH.
* VENTILATION........EXCELLENT DECREASING TO GOOD AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........44-54.
* MIN HUMIDITY.......
* VALLEYS..........30-40%.
* MID SLOPE........33-43%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 17 MPH INCREASING TO 13 TO
20 MPH LATE IN THE AFTERNOON. GUSTS TO 30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH. GUSTS TO 70 MPH
DECREASING TO 55 MPH LATE IN THE AFTERNOON.
* CHC WETTING RAIN...35%.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 2800-3800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH INCREASING TO 25 TO 35
MPH IN THE AFTERNOON.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 26-36. SOUTH WINDS 9 TO 17 MPH.
TUESDAY
RAIN AND SNOW. HIGHS 45-55. LOWS 24-34. SOUTH WINDS 10 TO
20 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
SNOW AND RAIN. HIGHS 35-45. LOWS
17-27. SOUTH WINDS 10 TO 20 MPH.
FRIDAY
SNOW AND RAIN. HIGHS 34-44. LOWS 13-23.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 33-43.
.8 TO 14 DAY OUTLOOK FOR (SUN DEC 28 THROUGH SAT JAN 3)
ABOVE NORMAL TEMPERATURES AND PRECIPITATION.
=
HTTP://WEATHER.GOV/RENO
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page