Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
949
FNUS55 KREV 150952
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
152 AM PST Mon Dec 15 2025
.DISCUSSION...
Dry conditions, warm temperatures, and light winds persist today.
Inversions in the morning as well as fog and stratus in the Tahoe
Basin will break in the afternoon. A pattern change is expected on
Tuesday bringing potential for periods of rain, high elevation snow,
and increasing ridgetop winds through the weekend.
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
NVZ420-160200-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-62.
* Mid Slope........52-62.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........21-31%.
* 24 hr trend......4% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........30-40.
* Mid Slope........35-44.
* 24 hr trend......5 degrees warmer.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........60-70%.
* 24 hr trend......16% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph. Gusts to 25 mph in
the late evening and overnight.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Mostly cloudy. Slight chance of rain in the
afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........52-62.
* Min Humidity.......
* Valleys..........42-52%.
* Mid Slope........46-56%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-800 ft agl increasing to 1400-1900 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.TUESDAY NIGHT...Mostly cloudy. Chance of rain. Lows 37-47.
Southwest winds 9 to 17 mph.
.WEDNESDAY...Partly cloudy. Chance of rain. Highs 53-63. Lows 32-42.
Southwest winds 10 to 20 mph.
.THURSDAY THROUGH FRIDAY...Mostly cloudy. Chance of rain. Highs
54-64. Lows 32-42. Southwest winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of rain. Highs
49-59. Lows 29-39.
$$
NVZ421-160200-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Sunny then becoming partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........55-65.
* Mid Slope........51-61.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........17-27%.
* Mid Slope........17-27%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 25 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-900 ft agl increasing to 1100-1600 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........27-37.
* Mid Slope........35-45.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........67-77%.
* Mid Slope........47-57%.
* 24 hr trend......28% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 25
mph.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........56-66.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........35-45%.
* Mid Slope........34-44%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-900 ft agl increasing to 1900-2900 ft agl
in the afternoon.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Marginal increasing to very good in the
afternoon.
.Extended...
.TUESDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Chance of rain. Lows 32-42. Southwest winds 9 to 14 mph.
.WEDNESDAY...Partly cloudy. Chance of rain and a slight chance of
snow. Highs 52-62. Lows 29-39. Southwest winds 10 to 20 mph.
.THURSDAY...Mostly cloudy. Slight chance of rain. Highs 55-65. Lows
29-39. Southwest winds 10 to 20 mph.
.FRIDAY...Mostly cloudy. Chance of rain and snow. Highs 53-63. Lows
30-40. Southwest winds 15 to 25 mph.
.SATURDAY...Mostly cloudy. Chance of rain and snow. Highs 48-58.
Lows 25-35.
.SUNDAY...Snow likely and a chance of rain. Highs 47-57.
$$
CAZ272-160200-
Greater Lake Tahoe and Truckee Area-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Partly cloudy. Fog in the morning. Patchy fog
in the afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-59.
* Mid Slope........48-58.
* 24 hr trend......8 degrees warmer.
* Min Humidity.......
* Valleys..........31-41%.
* Mid Slope........26-36%.
* 24 hr trend......17% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 25 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........31-41.
* Mid Slope........32-42.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........90-100%.
* Mid Slope........70-80%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 30 mph.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
Chance of rain in the afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-56.
* Mid Slope........46-56.
* Min Humidity.......
* Valleys..........62-72%.
* Mid Slope........59-69%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 15 to 25 mph with gusts to 40 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-800 ft agl increasing to 1400-1900 ft agl
in the afternoon.
* Transport Winds....West 10 to 20 mph.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.TUESDAY NIGHT...Chance of rain in the evening, then rain likely
after midnight. Lows 35-45. Downslope 2 to 5 mph becoming southwest
13 to 20 mph.
.WEDNESDAY...Mostly cloudy. Chance of rain and a slight chance of
snow. Highs 44-49. Lows 29-39. Southwest winds 10 to 20 mph.
.THURSDAY...Mostly cloudy. Chance of rain and snow. Highs 47-53.
Lows 29-39. Southwest winds 10 to 20 mph.
.FRIDAY...Rain and snow likely. Highs 43-49. Lows 29-39. Southwest
winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Rain and snow likely. Highs 40-47. Lows
26-36.
$$
NVZ423-160200-
West Humboldt Basin in Pershing County-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-58.
* Mid Slope........49-57.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........19-29%.
* Mid Slope........20-30%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 25
mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1100 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........32-41.
* 24 hr trend......5 degrees warmer.
* Max Humidity.......
* Valleys..........60-70%.
* Mid Slope........35-45%.
* 24 hr trend......8% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Mostly cloudy. Slight chance of rain in the
afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-59.
* Mid Slope........48-58.
* Min Humidity.......
* Valleys..........27-37%.
* Mid Slope........33-43%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 40
mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-1100 ft agl.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.TUESDAY NIGHT...Mostly cloudy. Chance of rain. Lows 34-44.
Downslope 2 to 5 mph becoming southwest 9 to 14 mph in the late
evening and overnight.
.WEDNESDAY...Mostly cloudy. Chance of rain. Highs 57-63. Lows 33-43.
Southwest winds 10 to 20 mph.
.THURSDAY THROUGH FRIDAY...Mostly cloudy. Chance of rain. Highs
56-62. Lows 33-43. Southwest winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of rain. Highs
52-58. Lows 29-39.
$$
NVZ429-160200-
Lahontan Basin including Churchill and Eastern Mineral Counties-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-60.
* Mid Slope........50-60.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........18-28%.
* Mid Slope........16-26%.
* 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........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........25-35.
* Mid Slope........34-43.
* 24 hr trend......5 degrees warmer.
* Max Humidity.......
* Valleys..........57-67%.
* Mid Slope........36-46%.
* 24 hr trend......7% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 25
mph.
* Chc Wetting Rain...0%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Poor.
.TUESDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........52-62.
* Min Humidity.......
* Valleys..........29-39%.
* Mid Slope........31-41%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 800-1300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Slight chance of rain after midnight. Lows 32-42. Downslope
2 to 5 mph becoming southwest 9 to 14 mph in the late evening and
overnight.
.WEDNESDAY...Partly cloudy. Highs 57-66. Lows 31-41. Southwest winds
10 to 15 mph.
.THURSDAY...Mostly cloudy. Highs 58-67. Lows 31-41. Southwest winds
10 to 20 mph.
.FRIDAY...Mostly cloudy. Slight chance of rain. Highs 58-66. Lows
33-43. Southwest winds 10 to 15 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of rain. Highs
52-62. Lows 30-40.
$$
CAZ270-278-NVZ458-160200-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Mostly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........49-59.
* Mid Slope........49-57.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........32-42%.
* Mid Slope........32-42%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 700-1200 ft agl
in the afternoon.
* Transport Winds....Southwest 10 to 15 mph.
* Ventilation........Marginal increasing to fair in the afternoon.
.TONIGHT...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
Slight chance of rain.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........30-40.
* Mid Slope........32-42.
* 24 hr trend......6 degrees warmer.
* Max Humidity.......
* Valleys..........81-91%.
* Mid Slope........74-84%.
* 24 hr trend......22% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 20 mph with gusts to 35
mph.
* Chc Wetting Rain...5%.
* Mixing Height......700 ft agl.
* Transport Winds....Southwest 10 to 15 mph.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Mostly cloudy. Chance of rain.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........51-61.
* Mid Slope........50-56.
* Min Humidity.......
* Valleys..........52-62%.
* Mid Slope........52-62%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southwest 5 to 10
mph with gusts to 20 mph late in the
afternoon.
* Ridge Top........West winds 15 to 25 mph with gusts to 40 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 1300-1800 ft agl
in the afternoon.
* Transport Winds....West 10 to 20 mph.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.TUESDAY NIGHT...Rain likely in the evening, then rain after
midnight. Lows 38-47. Southwest winds 9 to 15 mph increasing to
12 to 18 mph in the morning.
.WEDNESDAY...Mostly cloudy. Chance of rain and snow. Highs 49-59.
Lows 29-39. Southwest winds 10 to 20 mph.
.THURSDAY THROUGH FRIDAY...Mostly cloudy. Chance of rain. Highs
48-58. Lows 29-39. Southwest winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of rain and snow.
Highs 45-55. Lows 27-37.
$$
CAZ271-160200-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Mostly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........52-60.
* Mid Slope........50-58.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........30-40%.
* Mid Slope........28-38%.
* 24 hr trend......7% wetter.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 800-1300 ft agl
in the afternoon.
* Transport Winds....Southwest 10 to 15 mph.
* Ventilation........Marginal increasing to fair in the afternoon.
.TONIGHT...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
Slight chance of rain.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........28-38.
* Mid Slope........34-44.
* 24 hr trend......5 degrees warmer.
* Max Humidity.......
* Valleys..........87-97%.
* Mid Slope........79-89%.
* 24 hr trend......30% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...5%.
* Mixing Height......700 ft agl.
* Transport Winds....Southwest 10 to 15 mph.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Mostly cloudy. Chance of rain.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........49-59.
* Mid Slope........48-58.
* Min Humidity.......
* Valleys..........56-66%.
* Mid Slope........55-65%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 30
mph.
* Chc Wetting Rain...15%.
* Mixing Height......600-700 ft agl increasing to 1300-1800 ft agl
in the afternoon.
* Transport Winds....West 10 to 20 mph.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.TUESDAY NIGHT...Rain. Lows 34-44. Southwest winds 9 to 15 mph.
.WEDNESDAY...Mostly cloudy. Chance of rain and snow. Highs 46-54.
Lows 27-37. Southwest winds 10 to 20 mph.
.THURSDAY...Mostly cloudy. Chance of rain and snow. Highs 46-56.
Lows 27-37. Southwest winds 10 to 20 mph.
.FRIDAY...Rain likely. Highs 43-53. Lows 29-39. Southwest winds
10 to 20 mph.
.SATURDAY...Mostly cloudy. Chance of rain and snow. Highs 43-51.
Lows 26-36.
.SUNDAY...Rain and snow likely. Highs 42-50.
$$
CAZ274-160200-
Southern Mono County-
152 AM PST Mon Dec 15 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........53-63.
* Mid Slope........50-60.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........13-23%.
* Mid Slope........14-24%.
* 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......800-1300 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Partly cloudy then becoming clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........27-37.
* Mid Slope........29-39.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........71-81%.
* Mid Slope........44-54%.
* 24 hr trend......28% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph with gusts to 25
mph.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TUESDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........54-64.
* Mid Slope........51-61.
* Min Humidity.......
* Valleys..........25-35%.
* Mid Slope........32-42%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 25 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1000 ft agl increasing to 1500-2500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.TUESDAY NIGHT...Partly cloudy. Slight chance of rain after
midnight. Lows 29-39. Downslope 2 to 5 mph becoming southwest 9 to
14 mph in the late evening and overnight.
.WEDNESDAY...Mostly clear. Slight chance of rain. Highs 51-61. Lows 29-39.
West winds 10 to 15 mph.
.THURSDAY...Partly cloudy. Highs 53-63. Lows 29-39. Southwest winds
10 to 15 mph.
.FRIDAY...Partly cloudy. Chance of rain and snow. Highs 51-61. Lows
28-38. Southwest winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of rain and snow.
Highs 46-56. Lows 25-35.
$$
.8 to 14 day outlook for (Mon Dec 22 through Sun Dec 28)
Above normal temperatures and precipitation.
=
$$
http://weather.gov/reno