Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
619
FNUS55 KREV 100858
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
1258 AM PST Wed Dec 10 2025
.DISCUSSION...
High pressure maintains dry and unseasonably warm conditions through
the weekend. Poor mixing in the mornings should improve in the
afternoons, 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
NVZ420-110030-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
1258 AM PST Wed Dec 10 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..........18-28%.
* Mid Slope........19-29%.
* 24 hr trend......15% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........South 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........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........28-38.
* Mid Slope........32-41.
* 24 hr trend......Little change.
* 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.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-63.
* Mid Slope........52-62.
* Min Humidity.......
* Valleys..........17-27%.
* Mid Slope........16-26%.
* 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...
.THURSDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 51-61. Lows 25-35. Slope winds.
.SATURDAY...Clear. Highs 52-62. Lows 25-35. Slope winds.
.SUNDAY...Partly cloudy. Highs 52-62. Lows 25-35. Slope winds.
.MONDAY...Mostly cloudy. Slight chance of rain. Highs 53-63. Lows
29-39.
.TUESDAY...Partly cloudy. Slight chance of rain. Highs 52-62.
$$
NVZ421-110030-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........56-66.
* Mid Slope........52-62.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........14-24%.
* Mid Slope........10-20%.
* 24 hr trend......13% drier.
* 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 900-1400 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........33-43.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........56-66%.
* Mid Slope........31-41%.
* 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.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........57-67.
* Mid Slope........52-62.
* Min Humidity.......
* Valleys..........12-22%.
* Mid Slope........10-20%.
* 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.
.Extended...
.THURSDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 55-65. Lows 26-36. Slope winds.
.SATURDAY THROUGH SUNDAY...Clear. Highs 55-65. Lows 24-34. Slope
winds.
.MONDAY...Partly cloudy. Slight chance of rain. Highs 54-64. Lows
27-37.
.TUESDAY...Partly cloudy. Chance of snow and a slight chance of
rain. Highs 52-62.
$$
CAZ272-110030-
Greater Lake Tahoe and Truckee Area-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-62.
* Mid Slope........51-61.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........24-34%.
* Mid Slope........10-20%.
* 24 hr trend......23% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southeast winds 10 to 15 mph shifting to the
west in the afternoon.
* 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..........29-39.
* Mid Slope........33-43.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........50-60%.
* 24 hr trend......8% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds becoming west 10 to 15 mph in the
morning.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-63.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........5-15%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-800 ft agl increasing to 800-1300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.THURSDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 53-62. Lows 26-36. Slope winds.
.SATURDAY...Clear. Highs 53-61. Lows 25-35. Slope winds.
.SUNDAY...Partly cloudy. Highs 52-58. Lows 25-35. Slope winds.
.MONDAY...Mostly cloudy. Chance of rain. Highs 50-56. Lows 28-38.
.TUESDAY...Mostly cloudy. Chance of rain and snow. Highs 47-53.
$$
NVZ423-110030-
West Humboldt Basin in Pershing County-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-61.
* Mid Slope........52-60.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........15-25%.
* Mid Slope........22-32%.
* 24 hr trend......14% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........24-34.
* Mid Slope........30-39.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........68-78%.
* Mid Slope........47-57%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds. Gusts to 20 mph in the evening then
20 mph after midnight.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-61.
* Mid Slope........51-59.
* Min Humidity.......
* Valleys..........12-22%.
* Mid Slope........20-30%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds. Gusts to 20 mph in the morning.
* Chc Wetting Rain...0%.
* Mixing Height......600-1100 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.THURSDAY NIGHT...Clear. Lows 21-31. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 51-59. Lows 21-31. Slope winds.
.SATURDAY...Clear. Highs 51-59. Lows 20-30. Slope winds.
.SUNDAY...Partly cloudy. Highs 51-59. Lows 20-30. Slope winds.
.MONDAY...Mostly cloudy. Highs 54-60. Lows 25-35.
.TUESDAY...Partly cloudy. Slight chance of rain. Highs 52-57.
$$
NVZ429-110030-
Lahontan Basin including Churchill and Eastern Mineral Counties-
1258 AM PST Wed Dec 10 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..........21-31%.
* Mid Slope........21-31%.
* 24 hr trend......14% drier.
* 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..........25-35.
* Mid Slope........31-41.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........69-79%.
* Mid Slope........43-53%.
* 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.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........52-62.
* Min Humidity.......
* Valleys..........19-29%.
* Mid Slope........18-28%.
* 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......600-700 ft agl increasing to 700-1200 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.THURSDAY NIGHT...Clear. Lows 21-31. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 51-61. Lows 20-30. Slope winds.
.SATURDAY THROUGH SUNDAY...Clear. Highs 51-61. Lows 20-30. Slope
winds.
.MONDAY...Partly cloudy. Highs 53-63. Lows 24-34.
.TUESDAY...Partly cloudy. Slight chance of rain. Highs 55-63.
$$
CAZ270-278-NVZ458-110030-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........53-61.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........29-39%.
* Mid Slope........30-40%.
* 24 hr trend......16% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds. Gusts to 20 mph in the morning then
20 mph late in the afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 900-1400 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........28-38.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........60-70%.
* 24 hr trend......4% drier.
* 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........Poor.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-62.
* Mid Slope........51-59.
* Min Humidity.......
* Valleys..........22-32%.
* Mid Slope........21-31%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds. Gusts to 20 mph in the morning.
* Chc Wetting Rain...0%.
* Mixing Height......600-1100 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.THURSDAY NIGHT...Clear. Lows 23-33. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 50-60. Lows 23-33. Slope winds.
.SATURDAY...Clear. Highs 49-59. Lows 22-32. Slope winds.
.SUNDAY...Partly cloudy. Highs 49-59. Lows 22-32. Slope winds.
.MONDAY THROUGH TUESDAY...Mostly cloudy. Slight chance of rain.
Highs 50-60. Lows 27-37.
$$
CAZ271-110030-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........57-65.
* Mid Slope........55-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........25-35%.
* Mid Slope........23-33%.
* 24 hr trend......19% drier.
* 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 800-1300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........25-35.
* Mid Slope........31-41.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........76-86%.
* Mid Slope........58-68%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds becoming southwest 10 to 15 mph
after midnight.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........56-64.
* Mid Slope........53-63.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........20-30%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming northwest 10 to 15 mph in
the afternoon.
* 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.
.Extended...
.THURSDAY NIGHT...Clear. Lows 21-31. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 55-63. Lows 21-31. Slope winds.
.SATURDAY...Clear. Highs 53-63. Lows 21-31. Slope winds.
.SUNDAY...Partly cloudy. Highs 52-60. Lows 21-31. Slope winds.
.MONDAY THROUGH TUESDAY...Mostly cloudy. Chance of rain. Highs
49-59. Lows 25-35.
$$
CAZ274-110030-
Southern Mono County-
1258 AM PST Wed Dec 10 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........50-60.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........10-20%.
* Mid Slope........11-21%.
* 24 hr trend......18% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........27-37.
* Mid Slope........29-39.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........61-71%.
* Mid Slope........30-40%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........9-19%.
* Mid Slope........8-18%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......800-1300 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.Extended...
.THURSDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph.
.FRIDAY...Clear. Highs 55-65. Lows 26-36. Slope winds.
.SATURDAY...Clear. Highs 53-63. Lows 25-35. Slope winds.
.SUNDAY...Clear. Highs 51-61. Lows 25-35. Slope winds.
.MONDAY...Partly cloudy. Highs 52-62. Lows 27-37.
.TUESDAY...Partly cloudy. Slight chance of rain and snow. Highs
52-62.
$$
.8 to 14 day outlook for (Wed Dec 17 through Tue Dec 23)
Above normal temperatures and precipitation.
=
$$
http://weather.gov/reno