Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
850
FNUS55 KREV 110853
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
1253 AM PST Thu Dec 11 2025
.DISCUSSION...
Dry conditions with above normal temperatures and light, terrain-driven
winds persist through the weekend. Expect poor mixing in the morning to
improve in the afternoon, but light winds will limit smoke transport. A
pattern change may bring greater potential for periods of rain/snow and
increased winds next week, but confidence remains low.
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
NVZ420-120030-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........53-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........24-34%.
* Mid Slope........25-35%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........29-38.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........47-57%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-60.
* Mid Slope........49-59.
* Min Humidity.......
* Valleys..........25-35%.
* Mid Slope........26-36%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph in the morning
becoming light.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.Extended...
.FRIDAY NIGHT...Clear. Lows 23-33. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 51-61. Lows 23-33. Slope winds.
.SUNDAY...Clear. Highs 52-62. Lows 24-34. Slope winds.
.MONDAY...Mostly cloudy. Highs 53-63. Lows 27-37. Slope winds.
.TUESDAY...Mostly cloudy. Slight chance of rain. Highs 54-64. Lows
32-42.
.WEDNESDAY...Partly cloudy. Slight chance of rain. Highs 52-62.
$$
NVZ421-120030-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........57-67.
* Mid Slope........53-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........22-32%.
* Mid Slope........21-31%.
* 24 hr trend......7% wetter.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-900 ft agl increasing to 1000-1500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........31-41.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........55-65%.
* Mid Slope........30-40%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........20-30%.
* Mid Slope........19-29%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.FRIDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 55-65. Lows 24-34. Slope winds.
.SUNDAY...Clear. Highs 55-65. Lows 24-34. Slope winds.
.MONDAY...Partly cloudy. Highs 56-66. Lows 26-36. Slope winds.
.TUESDAY...Partly cloudy. Chance of snow and a slight chance of
rain. Highs 53-63. Lows 29-39.
.WEDNESDAY...Mostly cloudy. Chance of snow and a slight chance of
rain. Highs 52-62.
$$
CAZ272-120030-
Greater Lake Tahoe and Truckee Area-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-63.
* Mid Slope........52-62.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........35-45%.
* Mid Slope........25-35%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1100 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........30-40.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........42-52%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds. Gusts to 20 mph in the evening.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-61.
* Mid Slope........48-58.
* Min Humidity.......
* Valleys..........37-47%.
* Mid Slope........27-37%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming southwest 10 to 15 mph in
the late morning and early afternoon, then
becoming light late in the afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.Extended...
.FRIDAY NIGHT...Clear. Lows 25-35. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 53-61. Lows 24-34. Slope winds.
.SUNDAY...Clear. Highs 52-60. Lows 24-34. Slope winds.
.MONDAY...Mostly cloudy. Slight chance of rain. Highs 52-58. Lows
27-37. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of rain and snow.
Highs 45-54. Lows 30-40.
$$
NVZ423-120030-
West Humboldt Basin in Pershing County-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-61.
* Mid Slope........53-61.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........20-30%.
* Mid Slope........26-36%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds. Gusts to 25 mph in the morning.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........22-32.
* Mid Slope........27-36.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........69-79%.
* Mid Slope........45-55%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........51-59.
* Mid Slope........49-57.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........27-37%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 700-1200 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Poor.
.Extended...
.FRIDAY NIGHT...Clear. Lows 20-30. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 49-59. Lows 20-30. Slope winds.
.SUNDAY...Clear. Highs 51-59. Lows 20-30. Slope winds.
.MONDAY...Mostly cloudy. Highs 52-60. Lows 23-33. Slope winds.
.TUESDAY...Mostly cloudy. Highs 56-62. Lows 29-39.
.WEDNESDAY...Mostly cloudy. Slight chance of rain. Highs 55-61.
$$
NVZ429-120030-
Lahontan Basin including Churchill and Eastern Mineral Counties-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-63.
* Mid Slope........53-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........25-35%.
* Mid Slope........26-36%.
* 24 hr trend......6% wetter.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph. Gusts to 20 mph in the
morning.
* Chc Wetting Rain...0%.
* Mixing Height......600-800 ft agl increasing to 800-1300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........22-32.
* Mid Slope........29-39.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........71-81%.
* Mid Slope........47-57%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-60.
* Mid Slope........49-59.
* Min Humidity.......
* Valleys..........26-36%.
* Mid Slope........25-35%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 700-1200 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.FRIDAY NIGHT...Clear. Lows 18-28. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 50-60. Lows 18-28. Slope winds.
.SUNDAY...Clear. Highs 51-61. Lows 19-29. Slope winds.
.MONDAY...Partly cloudy. Highs 53-63. Lows 22-32. Slope winds.
.TUESDAY...Mostly cloudy. Highs 55-65. Lows 28-38.
.WEDNESDAY...Partly cloudy. Highs 57-65.
$$
CAZ270-278-NVZ458-120030-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-63.
* Mid Slope........52-60.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........24-34%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 15 mph. Gusts to 20 mph in
the morning.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 800-1300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........23-33.
* Mid Slope........26-36.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........57-67%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........49-59.
* Mid Slope........48-58.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........23-33%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming southwest 10 to 15 mph in
the late morning and afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.Extended...
.FRIDAY NIGHT...Clear. Lows 21-31. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 48-58. Lows 21-31. Slope winds.
.SUNDAY...Partly cloudy. Highs 49-59. Lows 21-31. Slope winds.
.MONDAY...Mostly cloudy. Slight chance of rain. Highs 49-59. Lows
25-35. Southwest winds 10 to 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Slight chance of rain.
Highs 49-59. Lows 31-41.
$$
CAZ271-120030-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........56-64.
* Mid Slope........55-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........24-34%.
* Mid Slope........24-34%.
* 24 hr trend......4% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming northwest 10 to 15 mph in
the late morning and afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 700-1200 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........20-30.
* Mid Slope........28-38.
* 24 hr trend......4 degrees cooler.
* Max Humidity.......
* Valleys..........72-82%.
* Mid Slope........49-59%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-63.
* Mid Slope........50-60.
* Min Humidity.......
* Valleys..........26-36%.
* Mid Slope........25-35%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.FRIDAY NIGHT...Clear. Lows 19-29. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 53-63. Lows 19-29. Slope winds.
.SUNDAY...Partly cloudy. Highs 52-60. Lows 19-29. Slope winds.
.MONDAY...Mostly cloudy. Slight chance of rain. Highs 51-59. Lows
23-33. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of rain. Highs
47-57. Lows 29-39.
$$
CAZ274-120030-
Southern Mono County-
1253 AM PST Thu Dec 11 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........56-66.
* Mid Slope........53-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........20-30%.
* Mid Slope........21-31%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1000 ft agl increasing to 1000-1500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........27-37.
* Mid Slope........28-38.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........62-72%.
* Mid Slope........32-42%.
* 24 hr trend......5% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-65.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........18-28%.
* Mid Slope........20-30%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1000 ft agl increasing to 1000-1500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.FRIDAY NIGHT...Clear. Lows 24-34. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 53-63. Lows 24-34. Slope winds.
.SUNDAY...Clear. Highs 52-62. Lows 24-34. Slope winds.
.MONDAY...Partly cloudy. Highs 53-63. Lows 25-35. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 51-61. Lows 28-38.
$$
.8 to 14 day outlook for (Thu Dec 18 through Wed Dec 24)
Above normal temperatures and precipitation.
=
$$
http://weather.gov/reno