Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
537
FNUS55 KREV 040840
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
1240 AM PST Thu Dec 4 2025
.DISCUSSION...
Cold morning will become a warmer day today. Conditions remain dry
through the week, with an exception for light shower chances along
the Oregon border this weekend. Dry weather will be with us through
the next work week.
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
NVZ420-050015-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........42-52.
* Mid Slope........39-49.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........30-40%.
* Mid Slope........29-39%.
* 24 hr trend......9% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northeast winds 10 to 15 mph with gusts to 20
mph shifting to the northwest late in the
afternoon.
* 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........Partly cloudy then becoming clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........23-33.
* Mid Slope........29-36.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........85-95%.
* Mid Slope........70-80%.
* 24 hr trend......14% wetter.
* 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......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-60.
* Mid Slope........47-57.
* Min Humidity.......
* Valleys..........47-57%.
* Mid Slope........48-58%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 30 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-800 ft agl increasing to 1100-1600 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Lows
28-38. Downslope 2 to 5 mph becoming southwest 7 to 12 mph after
midnight.
.SATURDAY...Partly cloudy. Highs 51-61. Lows 27-37. Slope winds.
.SUNDAY...Partly cloudy. Highs 50-60. Lows 26-36. Slope winds.
.MONDAY...Clear. Highs 51-61. Lows 26-36. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 55-65. Lows 28-38.
$$
NVZ421-050015-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........42-52.
* Mid Slope........38-48.
* 24 hr trend......8 degrees warmer.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........21-31%.
* 24 hr trend......17% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 15 mph. Gusts to 25 mph in the
late morning and afternoon.
* 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........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........23-33.
* Mid Slope........27-37.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........78-88%.
* Mid Slope........62-72%.
* 24 hr trend......20% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........North winds 15 to 20 mph with gusts to 30 mph
increasing to 20 to 30 mph with gusts to 40
mph in the late evening and overnight.
* 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..........49-59.
* Mid Slope........44-54.
* Min Humidity.......
* Valleys..........42-52%.
* Mid Slope........42-52%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 20 mph. Gusts to 40 mph until
late afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......600-900 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.FRIDAY NIGHT...Clear. Lows 27-37. Downslope 2 to 5 mph becoming
southwest 7 to 12 mph in the late evening and overnight.
.SATURDAY...Clear. Highs 52-62. Lows 24-34. Slope winds.
.SUNDAY...Partly cloudy. Highs 52-62. Lows 24-34. Slope winds.
.MONDAY...Clear. Highs 52-62. Lows 24-34. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 57-67. Lows 27-37.
$$
CAZ272-050015-
Greater Lake Tahoe and Truckee Area-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........44-50.
* Mid Slope........38-48.
* 24 hr trend......8 degrees warmer.
* Min Humidity.......
* Valleys..........32-42%.
* Mid Slope........32-42%.
* 24 hr trend......11% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northeast winds 10 to 15 mph with gusts to 30
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..........23-33.
* Mid Slope........26-36.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........89-99%.
* Mid Slope........74-84%.
* 24 hr trend......28% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 20 mph with gusts to 40
mph increasing to north 20 to 30 mph with
gusts to 40 mph after midnight.
* 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..........49-55.
* Mid Slope........44-54.
* Min Humidity.......
* Valleys..........52-62%.
* Mid Slope........51-61%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 20 mph with gusts to 40 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-800 ft agl increasing to 1000-1500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.FRIDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph becoming
west 7 to 12 mph after midnight.
.SATURDAY...Partly cloudy. Highs 48-54. Lows 25-35. Slope winds.
.SUNDAY...Partly cloudy. Highs 49-55. Lows 25-35. Slope winds.
.MONDAY...Clear. Highs 51-57. Lows 25-35. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 54-61. Lows 27-37.
$$
NVZ423-050015-
West Humboldt Basin in Pershing County-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........42-48.
* Mid Slope........37-47.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........33-43%.
* Mid Slope........38-48%.
* 24 hr trend......6% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming west 10 to 15 mph with
gusts to 25 mph in the late morning and
afternoon.
* Chc Wetting Rain...5%.
* Mixing Height......600-800 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Mostly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........24-34.
* Mid Slope........28-35.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........73-83%.
* Mid Slope........53-63%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Southwest winds 10 to 15 mph with gusts to 40
mph.
* Chc Wetting Rain...5%.
* Mixing Height......700 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........49-55.
* Mid Slope........44-54.
* Min Humidity.......
* Valleys..........42-52%.
* Mid Slope........49-59%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 35 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 1100-1600 ft agl
in the afternoon.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Marginal increasing to fair in the afternoon.
.Extended...
.FRIDAY NIGHT...Mostly cloudy. Lows 28-38. Southwest winds 7 to
12 mph.
.SATURDAY...Partly cloudy. Highs 51-57. Lows 25-35. Slope winds.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs 49-54. Lows 25-35.
Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 54-62. Lows 26-36.
$$
NVZ429-050015-
Lahontan Basin including Churchill and Eastern Mineral Counties-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........40-48.
* Mid Slope........38-46.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........29-39%.
* Mid Slope........25-35%.
* 24 hr trend......10% 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......600-900 ft agl increasing to 1300-1800 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........23-33.
* Mid Slope........26-35.
* 24 hr trend......7 degrees warmer.
* Max Humidity.......
* Valleys..........75-85%.
* Mid Slope........58-68%.
* 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 35 mph.
* Chc Wetting Rain...5%.
* Mixing Height......800 ft agl.
* Transport Winds....Light winds.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........48-57.
* Mid Slope........44-54.
* Min Humidity.......
* Valleys..........45-55%.
* Mid Slope........48-58%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 35 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to fair in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Lows 27-37. Downslope 2 to 5 mph
becoming southwest 7 to 12 mph after midnight.
.SATURDAY...Partly cloudy. Highs 51-61. Lows 24-34. Slope winds.
.SUNDAY...Partly cloudy. Highs 51-59. Lows 24-34. Slope winds.
.MONDAY...Clear. Highs 51-59. Lows 25-35. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 54-64. Lows 25-35.
$$
CAZ270-278-NVZ458-050015-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........42-52.
* Mid Slope........40-48.
* 24 hr trend......5 degrees warmer.
* Min Humidity.......
* Valleys..........34-44%.
* Mid Slope........36-46%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 15 mph with gusts to 30 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 1100-1600 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Partly cloudy. Slight chance of rain after
midnight.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........26-36.
* Mid Slope........27-36.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........87-97%.
* Mid Slope........84-94%.
* 24 hr trend......19% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........West winds 10 to 20 mph with gusts to 40 mph.
* Chc Wetting Rain...5%.
* Mixing Height......700 ft agl.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Marginal.
.FRIDAY...
* Sky/Weather........Mostly cloudy. Chance of rain in the
afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........47-57.
* Mid Slope........43-53.
* Min Humidity.......
* Valleys..........53-63%.
* Mid Slope........60-70%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........West winds 10 to 20 mph with gusts to 40 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 1100-1600 ft agl
in the afternoon.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Marginal increasing to fair in the afternoon.
.Extended...
.FRIDAY NIGHT...Mostly cloudy. Chance of rain. Lows 28-38. West
winds 9 to 14 mph.
.SATURDAY...Partly cloudy. Slight chance of rain and snow. Highs
46-56. Lows 25-35. Slope winds.
.SUNDAY...Partly cloudy. Highs 47-57. Lows 25-35. Slope winds.
.MONDAY...Partly cloudy. Highs 49-59. Lows 25-35. Slope winds.
.TUESDAY...Mostly cloudy. Highs 52-62. Lows 28-38.
.WEDNESDAY...Partly cloudy. Highs 54-64.
$$
CAZ271-050015-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........45-53.
* Mid Slope........44-52.
* 24 hr trend......7 degrees warmer.
* Min Humidity.......
* Valleys..........33-43%.
* Mid Slope........31-41%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northeast winds 10 to 15 mph with gusts to 25
mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Partly cloudy then becoming clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........22-32.
* Mid Slope........27-37.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........89-99%.
* Mid Slope........83-93%.
* 24 hr trend......23% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest 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.
.FRIDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........50-58.
* Mid Slope........48-56.
* Min Humidity.......
* Valleys..........51-61%.
* Mid Slope........51-61%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 15 mph with gusts to 30 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Slight chance of rain. Lows 25-35.
Downslope 2 to 5 mph.
.SATURDAY...Partly cloudy. Highs 46-56. Lows 23-33. Slope winds.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs 49-59. Lows 23-33.
Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 53-63. Lows 26-36.
$$
CAZ274-050015-
Southern Mono County-
1240 AM PST Thu Dec 4 2025
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........42-52.
* Mid Slope........38-48.
* 24 hr trend......7 degrees warmer.
* Min Humidity.......
* Valleys..........18-28%.
* Mid Slope........20-30%.
* 24 hr trend......11% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1000 ft agl increasing to 1200-1700 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........23-33.
* Mid Slope........22-32.
* 24 hr trend......8 degrees warmer.
* Max Humidity.......
* Valleys..........86-96%.
* Mid Slope........69-79%.
* 24 hr trend......33% wetter.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 20 mph increasing to 20 to
30 mph after midnight. Gusts to 40 mph
increasing to 45 mph in the morning.
* Chc Wetting Rain...0%.
* Mixing Height......800 ft agl.
* Transport Winds....Northwest 10 to 15 mph.
* Ventilation........Fair.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........47-57.
* Mid Slope........43-53.
* Min Humidity.......
* Valleys..........38-48%.
* Mid Slope........42-52%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northwest winds 10 to 20 mph with gusts to 45
mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-1000 ft agl increasing to 1300-1800 ft agl
in the afternoon.
* Transport Winds....Northwest 10 to 15 mph.
* Ventilation........Fair increasing to good in the afternoon.
.Extended...
.FRIDAY NIGHT...Clear. Lows 26-36. Downslope 2 to 5 mph becoming
west 7 to 12 mph after midnight.
.SATURDAY...Clear. Highs 50-60. Lows 26-36. Slope winds.
.SUNDAY...Partly cloudy. Highs 50-60. Lows 26-36. Slope winds.
.MONDAY...Clear. Highs 50-60. Lows 26-36. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 54-64. Lows 27-37.
$$
.8 to 14 day outlook for (Thu Dec 11 through Wed Dec 17)
Above normal temperatures and Near normal precipitation.
=
$$
http://weather.gov/reno