957
FNUS55 KREV 131018
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
318 AM PDT WED MAY 13 2026
DISCUSSION
BEGINNING TODAY, A COOLING TREND AND RETURNING WESTERLY WINDS WILL
COMBINE WITH A HUMIDITY DROP TO 8-15% ACROSS LOWER ELEVATIONS OF
NORTHEAST CA AND WESTERN NV. DRY AND MILD CONDITIONS PERSIST THROUGH
FRIDAY, BEFORE ENHANCED BREEZES AND COOLER TEMPERATURES DEVELOP LATE
FRIDAY THROUGH SUNDAY.
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
NVZ420-140045-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........69-79.
* 24 HR TREND......10 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........8-18%.
* MID SLOPE........11-19%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH INCREASING TO WEST
15 TO 25 MPH WITH GUSTS TO 35 MPH IN THE LATE
MORNING AND AFTERNOON.
* RIDGE TOP........WEST WINDS 20 TO 30 MPH. GUSTS TO 45 MPH.
* MIXING HEIGHT......2200-3200 FT AGL INCREASING TO 5100-6100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 20 TO 30 MPH.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........39-49.
* 24 HR TREND......13 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........43-53%.
* MID SLOPE........33-43%.
* 24 HR TREND......9% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 15 TO 25 MPH BECOMING DOWNSLOPE 2 TO
5 MPH.
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH
SHIFTING TO THE NORTH 10 TO 15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT......3000-4000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 15 TO 25 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........73-83.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........6-16%.
* MID SLOPE........11-17%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 5 TO 10
MPH.
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 6600-7600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 40-50. WEST WINDS 9 TO 14 MPH.
FRIDAY
CLEAR. HIGHS 72-82. LOWS 34-44. WEST WINDS 10 TO 20 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 61-71. LOWS 28-38. NORTH
WINDS 10 TO 20 MPH.
MONDAY
CLEAR. HIGHS 64-74. LOWS 28-38.
TUESDAY
SUNNY. HIGHS 72-82.
NVZ421-140045-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........65-75.
* 24 HR TREND......7 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........9-19%.
* MID SLOPE........9-19%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 30 MPH
INCREASING TO WEST 15 TO 25 MPH IN THE
AFTERNOON.
* RIDGE TOP........WEST WINDS 20 TO 30 MPH WITH GUSTS TO 45 MPH.
* MIXING HEIGHT......3700-4700 FT AGL INCREASING TO 6300-7300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH INCREASING TO WEST 20
TO 30 MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........31-41.
* MID SLOPE........41-51.
* 24 HR TREND......15 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........43-53%.
* MID SLOPE........26-36%.
* 24 HR TREND......6% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 13 TO 20 MPH WITH GUSTS TO 30 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......3800-4800 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........73-83.
* MID SLOPE........67-77.
* MIN HUMIDITY.......
* VALLEYS..........9-18%.
* MID SLOPE........9-19%.
* 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.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 8100-9100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 35-45. NORTHWEST WINDS 9 TO 14 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
FRIDAY
CLEAR. HIGHS 72-82. LOWS 30-40. WEST WINDS 10 TO 20 MPH.
SATURDAY
CLEAR. HIGHS 63-73. LOWS 27-37. WEST WINDS 10 TO 20 MPH.
SUNDAY
CLEAR. HIGHS 58-68. LOWS 25-35. NORTH WINDS 10 TO 20 MPH.
MONDAY
CLEAR. HIGHS 64-73. LOWS 25-35.
TUESDAY
SUNNY. HIGHS 72-82.
CAZ272-140045-
GREATER LAKE TAHOE AND TRUCKEE AREA-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........60-70.
* MID SLOPE........58-68.
* 24 HR TREND......10 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........18-28%.
* MID SLOPE........16-26%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 30
MPH.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 35 MPH. GUSTS TO 45 MPH
INCREASING TO 60 MPH IN THE LATE MORNING AND
EARLY AFTERNOON, THEN DECREASING TO 40 MPH
LATE IN THE AFTERNOON.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 3000-4000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........31-41.
* MID SLOPE........33-43.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........62-72%.
* MID SLOPE........39-49%.
* 24 HR TREND......7% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH UNTIL EARLY MORNING BECOMING LIGHT.
* MIXING HEIGHT......1500-2500 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........65-75.
* MIN HUMIDITY.......
* VALLEYS..........15-25%.
* MID SLOPE........14-24%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 5800-6800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 34-44. WEST WINDS 9 TO 14 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
FRIDAY
CLEAR. HIGHS 63-73. LOWS 31-41. WEST WINDS 10 TO 15 MPH.
SATURDAY
CLEAR. HIGHS 56-64. LOWS 29-39. WEST WINDS 10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 54-63. LOWS 28-38. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 59-69. LOWS 28-38.
TUESDAY
SUNNY. HIGHS 66-76.
NVZ423-140045-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........79-87.
* MID SLOPE........74-84.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........7-12%.
* MID SLOPE........8-13%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 25 MPH
INCREASING TO WEST 20 TO 30 MPH.
* RIDGE TOP........WEST WINDS 15 TO 25 MPH INCREASING TO 25 TO 35
MPH LATE IN THE AFTERNOON. GUSTS TO 45 MPH.
* MIXING HEIGHT......2800-3800 FT AGL INCREASING TO 7400-8400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH INCREASING TO WEST 25
TO 35 MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........37-47.
* MID SLOPE........40-50.
* 24 HR TREND......16 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........32-42%.
* MID SLOPE........23-33%.
* 24 HR TREND......11% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 15 TO 25 MPH SHIFTING TO THE
NORTH 9 TO 14 MPH AFTER MIDNIGHT.
* RIDGE TOP........NORTHWEST WINDS 25 TO 35 MPH BECOMING LIGHT.
* MIXING HEIGHT......3900-4900 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....NORTHWEST 20 TO 30 MPH BECOMING NORTH 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........78-86.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........7-12%.
* MID SLOPE........7-12%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 7100-8100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 42-52. WEST WINDS 5 TO 10 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH, THEN BECOMING NORTH 5 TO
10 MPH IN THE MORNING.
FRIDAY
CLEAR. HIGHS 77-85. LOWS 37-47. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY
PARTLY CLOUDY. HIGHS 66-74. LOWS 31-41. NORTH WINDS
10 TO 20 MPH.
SUNDAY
CLEAR. HIGHS 60-68. LOWS 29-39. NORTH WINDS 10 TO 20 MPH.
MONDAY
CLEAR. HIGHS 67-75. LOWS 29-39.
TUESDAY
SUNNY. HIGHS 77-85.
NVZ429-140045-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........79-89.
* MID SLOPE........75-85.
* 24 HR TREND......6 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........7-12%.
* MID SLOPE........7-15%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 30 MPH
INCREASING TO WEST 20 TO 30 MPH WITH GUSTS TO
40 MPH.
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......3900-4900 FT AGL INCREASING TO 9100-10100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO WEST 20
TO 30 MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........40-50.
* MID SLOPE........45-55.
* 24 HR TREND......10 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........23-33%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 20 TO 30 MPH DECREASING TO 5 TO
10 MPH WITH GUSTS TO 20 MPH.
* RIDGE TOP........NORTH WINDS 15 TO 25 MPH. GUSTS TO 35 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......4700-5700 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 20 TO 30 MPH BECOMING NORTH 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........75-85.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........6-12%.
* MID SLOPE........7-13%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 5 TO 10 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH. GUSTS TO 20 MPH IN THE
MORNING.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 6800-7800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 42-52. NORTH WINDS 5 TO 10 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH, THEN BECOMING NORTHWEST 7 TO
12 MPH AFTER MIDNIGHT.
FRIDAY
CLEAR. HIGHS 76-86. LOWS 38-48. NORTHWEST WINDS 10 TO
20 MPH.
SATURDAY
CLEAR. HIGHS 67-77. LOWS 35-45. NORTHWEST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. HIGHS 60-70. LOWS 31-41. NORTH WINDS 15 TO 25 MPH.
MONDAY
CLEAR. HIGHS 65-75. LOWS 31-41.
TUESDAY
SUNNY. HIGHS 75-85.
CAZ270-278-NVZ458-140045-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........62-72.
* 24 HR TREND......14 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........9-19%.
* MID SLOPE........13-23%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 35 MPH
INCREASING TO 20 TO 30 MPH WITH GUSTS TO 45
MPH IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 15 TO 25 MPH WITH GUSTS TO
35 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 20 TO 30 MPH WITH GUSTS TO 55 MPH.
* MIXING HEIGHT......1900-2900 FT AGL INCREASING TO 5400-6400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 25 TO 35 MPH.
* VENTILATION........EXCELLENT.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........30-40.
* MID SLOPE........34-44.
* 24 HR TREND......13 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........37-47%.
* 24 HR TREND......10% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 15 TO 25 MPH DECREASING TO 9 TO
16 MPH WITH GUSTS TO 30 MPH IN THE LATE
EVENING AND OVERNIGHT.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 35 MPH
UNTIL EARLY MORNING.
* MIXING HEIGHT......3100-4100 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....NORTHWEST 15 TO 25 MPH SHIFTING TO THE NORTH
10 TO 15 MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........73-83.
* MID SLOPE........68-78.
* MIN HUMIDITY.......
* VALLEYS..........6-16%.
* MID SLOPE........9-15%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH
WITH GUSTS TO 25 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE
LATE MORNING AND EARLY AFTERNOON, THEN
BECOMING LIGHT LATE IN THE AFTERNOON.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 7600-8600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 32-42. NORTHWEST WINDS 9 TO 17 MPH
DECREASING TO 7 TO 12 MPH IN THE MORNING.
FRIDAY
CLEAR. HIGHS 70-80. LOWS 30-40. NORTHWEST WINDS 10 TO
20 MPH.
SATURDAY
PARTLY CLOUDY. HIGHS 60-70. LOWS 25-35. NORTHWEST WINDS
15 TO 25 MPH.
SUNDAY
CLEAR. HIGHS 58-68. LOWS 25-35. NORTH WINDS 10 TO 20 MPH.
MONDAY
CLEAR. HIGHS 65-75. LOWS 26-36.
TUESDAY
SUNNY. HIGHS 73-83.
CAZ271-140045-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........64-74.
* MID SLOPE........61-71.
* 24 HR TREND......12 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........16-26%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 30 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH WITH GUSTS TO 50 MPH.
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 4400-5400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 20 TO 30 MPH.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........29-39.
* MID SLOPE........34-44.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........62-72%.
* MID SLOPE........45-55%.
* 24 HR TREND......9% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......2600-3600 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........69-79.
* MIN HUMIDITY.......
* VALLEYS..........12-20%.
* MID SLOPE........12-20%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH UNTIL LATE
AFTERNOON BECOMING LIGHT.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 8100-9100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 32-42. WEST WINDS 9 TO 15 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
FRIDAY
CLEAR. HIGHS 67-77. LOWS 30-40. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY
PARTLY CLOUDY. HIGHS 58-68. LOWS 26-36. NORTH WINDS
10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 57-67. LOWS 26-36. NORTHEAST WINDS 10 TO
15 MPH.
MONDAY
CLEAR. HIGHS 65-73. LOWS 27-37.
TUESDAY
SUNNY. HIGHS 72-82.
CAZ274-140045-
SOUTHERN MONO COUNTY-
318 AM PDT WED MAY 13 2026
TODAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........70-80.
* MID SLOPE........66-76.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........12-22%.
* MID SLOPE........13-23%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 15 MPH IN
THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......3400-4400 FT AGL INCREASING TO 6000-7000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........36-46.
* 24 HR TREND......6 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........43-53%.
* MID SLOPE........32-42%.
* 24 HR TREND......16% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH
UNTIL EARLY MORNING.
* MIXING HEIGHT......4200-5200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........69-79.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........10-19%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH UNTIL LATE
AFTERNOON BECOMING LIGHT.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 8500-9500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
CLEAR. LOWS 36-46. WEST WINDS 7 TO 12 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
FRIDAY
CLEAR. HIGHS 71-81. LOWS 32-42. WEST WINDS 10 TO 15 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 61-71. LOWS 27-37. NORTHWEST
WINDS 10 TO 20 MPH.
MONDAY
CLEAR. HIGHS 63-73. LOWS 27-37.
TUESDAY
SUNNY. HIGHS 70-80.
.8 TO 14 DAY OUTLOOK FOR (WED MAY 20 THROUGH TUE MAY 26)
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
=
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