Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
478
FNUS55 KREV 110918
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
218 AM PDT Thu Sep 11 2025
.DISCUSSION...
Scattered showers and storms forecast today, with cooler than
average temperatures expected, and wetting rains possible. Activity
becoming isolated on Friday, and dry and slightly warmer conditions
expected Saturday. Activity returns from Sunday, but expected to be
mostly over northern parts of the area. Elsewhere expect dry and
slightly warmer conditions, with risk of wind gusts in excess of 30
mph over the Sierras on 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
NVZ420-120030-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Sunny then becoming partly cloudy. Slight
chance of thunderstorms in the afternoon.
* Chance of Thunder..10%.
* Max Temperature....
* Valleys..........65-75.
* Mid Slope........62-72.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........22-32%.
* Mid Slope........30-40%.
* 24 hr trend......4% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...10%.
* Mixing Height......1600-2100 ft agl increasing to 5700-6700 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the evening.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........40-50.
* Mid Slope........43-53.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........78-88%.
* Mid Slope........62-72%.
* 24 hr trend......20% drier.
* 20-Foot Winds......
* Valleys/Slope....West winds 7 to 12 mph until early morning
becoming downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph. Gusts to 20 mph
after midnight.
* Chc Wetting Rain...10%.
* Mixing Height......3100-4100 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to marginal after midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........68-78.
* Mid Slope........65-75.
* Min Humidity.......
* Valleys..........19-29%.
* Mid Slope........27-37%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds becoming north 10 to 15 mph in the
afternoon.
* Chc Wetting Rain...5%.
* Mixing Height......900-1400 ft agl increasing to 4400-5400 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then becoming clear.
Lows 42-52. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 72-82. Lows 42-52. Slope winds.
.SUNDAY...Clear. Highs 72-82. Lows 41-51. West winds 10 to 15 mph.
.MONDAY...Clear. Highs 70-80. Lows 41-51. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 75-85. Lows 42-52.
$$
NVZ421-120030-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Sunny then becoming mostly cloudy. Chance of
showers and a slight chance of thunderstorms
in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........62-72.
* Mid Slope........55-65.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........27-37%.
* Mid Slope........27-37%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming north 7 to 12 mph in
the afternoon.
* Ridge Top........Light winds becoming southeast 10 to 15 mph in
the late morning and early afternoon, then
becoming light late in the afternoon.
* Chc Wetting Rain...25%.
* Mixing Height......1700-2700 ft agl increasing to 5200-6200 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to very good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Chance of showers and a slight chance of
thunderstorms in the evening.
* Chance of Thunder..20%.
* Min Temperature....
* Valleys..........31-41.
* Mid Slope........43-53.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........73-83%.
* Mid Slope........56-66%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds becoming east 10 to 15 mph after
midnight.
* Chc Wetting Rain...20%.
* Mixing Height......1900-2900 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to marginal after midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming partly cloudy. Slight
chance of thunderstorms in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........66-76.
* Mid Slope........59-69.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........24-34%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming north 5 to 10 mph
late in the afternoon.
* Ridge Top........Northeast winds 10 to 15 mph.
* Chc Wetting Rain...10%.
* Mixing Height......1100-1600 ft agl increasing to 5000-6000 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to very good in the
afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Slight
chance of showers in the evening. Lows 34-44. North winds 7 to
12 mph in the evening becoming downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 71-81. Lows 34-44. Slope winds.
.SUNDAY THROUGH MONDAY...Clear. Highs 72-82. Lows 33-43. West winds
8 to 13 mph.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 74-84. Lows 35-45.
$$
CAZ272-120030-
Greater Lake Tahoe and Truckee Area-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Sunny then becoming mostly cloudy. Chance of
showers and a slight chance of thunderstorms
in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........58-65.
* Mid Slope........53-63.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........47-57%.
* Mid Slope........42-52%.
* 24 hr trend......8% drier.
* 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...20%.
* Mixing Height......1700-2200 ft agl increasing to 4100-5100 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Good.
.TONIGHT...
* Sky/Weather........Partly cloudy then becoming clear. Chance of
showers in the evening.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........33-43.
* Mid Slope........35-45.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........88-98%.
* Mid Slope........75-85%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph until early morning
becoming light.
* Chc Wetting Rain...10%.
* Mixing Height......1600-2600 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Fair decreasing to marginal after midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming partly cloudy. Slight
chance of showers in the afternoon.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........60-70.
* Mid Slope........57-67.
* Min Humidity.......
* Valleys..........38-48%.
* Mid Slope........36-46%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......800-1300 ft agl increasing to 3500-4500 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Lows
35-45. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 66-76. Lows 35-45. Slope winds.
.SUNDAY THROUGH MONDAY...Clear. Highs 64-74. Lows 34-44. Slope
winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 68-78. Lows 36-46.
$$
NVZ423-120030-
West Humboldt Basin in Pershing County-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Partly cloudy. Slight chance of thunderstorms
in the afternoon.
* Chance of Thunder..10%.
* Max Temperature....
* Valleys..........71-77.
* Mid Slope........65-75.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........22-32%.
* 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...5%.
* Mixing Height......1600-2100 ft agl increasing to 6800-7800 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the evening.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........46-55.
* Mid Slope........48-55.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........68-78%.
* Mid Slope........49-59%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......3900-4900 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to marginal after midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........73-79.
* Mid Slope........68-78.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........25-33%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......800-1300 ft agl increasing to 5300-6300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then becoming clear.
Lows 45-55. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 77-83. Lows 45-55. Slope winds.
.SUNDAY THROUGH MONDAY...Clear. Highs 75-85. Lows 43-53. North winds
8 to 13 mph.
.TUESDAY...Clear. Highs 77-85. Lows 43-53.
.WEDNESDAY...Sunny. Highs 82-88.
$$
NVZ429-120030-
Lahontan Basin including Churchill and Eastern Mineral Counties-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the
afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........68-78.
* Mid Slope........64-74.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........22-32%.
* Mid Slope........25-35%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming northwest 7 to 12
mph in the afternoon.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......1700-2200 ft agl increasing to 6600-7600 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Partly cloudy. Slight chance of showers in the
evening.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........45-55.
* Mid Slope........46-56.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........66-76%.
* Mid Slope........52-62%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 7 to 12 mph until early morning
becoming downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph. Gusts to 20 mph
after midnight.
* Chc Wetting Rain...5%.
* Mixing Height......3600-4600 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........71-81.
* Mid Slope........66-76.
* Min Humidity.......
* Valleys..........20-30%.
* Mid Slope........23-33%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming northwest 7 to 12
mph in the afternoon.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......900-1400 ft agl increasing to 5300-6300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to very good in the
afternoon.
.Extended...
.FRIDAY NIGHT...Clear. Lows 46-56. North winds 7 to 12 mph in the
evening becoming downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 75-85. Lows 46-56. Slope winds.
.SUNDAY...Clear. Highs 77-87. Lows 47-57. Slope winds.
.MONDAY...Clear. Highs 75-85. Lows 45-55. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 79-89. Lows 45-55.
$$
CAZ270-278-NVZ458-120030-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Mostly cloudy. Chance of showers. Slight
chance of thunderstorms in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........65-75.
* Mid Slope........59-69.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........24-34%.
* Mid Slope........30-40%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming west 7 to 12 mph in
the afternoon.
* Ridge Top........Light winds.
* Chc Wetting Rain...10%.
* Mixing Height......1400-1900 ft agl increasing to 6000-7000 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Chance of showers and a slight chance of
thunderstorms in the evening.
* Chance of Thunder..20%.
* Min Temperature....
* Valleys..........39-49.
* Mid Slope........40-50.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........79-89%.
* Mid Slope........71-81%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 7 to 12 mph until early morning
becoming downslope 2 to 5 mph.
* Ridge Top........Northwest winds 10 to 15 mph.
* Chc Wetting Rain...10%.
* Mixing Height......3300-4300 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Northwest 10 to 15 mph.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........69-79.
* Mid Slope........65-73.
* Min Humidity.......
* Valleys..........21-31%.
* Mid Slope........27-37%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 15 mph.
* Chc Wetting Rain...5%.
* Mixing Height......800-1300 ft agl increasing to 4300-5300 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Lows
39-49. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 75-85. Lows 39-49. Slope winds.
.SUNDAY...Partly cloudy. Highs 71-81. Lows 36-46. West winds 10 to
15 mph.
.MONDAY...Clear. Highs 71-81. Lows 35-45. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 77-87. Lows 35-45.
$$
CAZ271-120030-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
Chance of showers and a slight chance of
thunderstorms in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........61-71.
* Mid Slope........59-69.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........36-46%.
* Mid Slope........38-48%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...10%.
* Mixing Height......1400-1900 ft agl increasing to 5400-6400 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the evening.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........33-43.
* Mid Slope........39-49.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........87-97%.
* Mid Slope........80-90%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...15%.
* Mixing Height......2400-3400 ft agl decreasing to 600-700 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........67-77.
* Mid Slope........65-73.
* Min Humidity.......
* Valleys..........29-39%.
* Mid Slope........31-41%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......700-1200 ft agl increasing to 4400-5400 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to fair in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then becoming clear.
Lows 33-43. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 72-82. Lows 33-43. Slope winds.
.SUNDAY...Clear. Highs 67-77. Lows 30-40. Southwest winds 10 to
15 mph.
.MONDAY...Clear. Highs 70-80. Lows 30-40. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 75-85. Lows 33-43.
$$
CAZ274-120030-
Southern Mono County-
218 AM PDT Thu Sep 11 2025
.TODAY...
* Sky/Weather........Sunny then becoming partly cloudy. Patchy
smoke in the morning. Chance of showers and a
slight chance of thunderstorms in the
afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........59-69.
* Mid Slope........55-65.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........29-39%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...15%.
* Mixing Height......1800-2800 ft agl increasing to 5700-6700 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to very good in the afternoon.
.TONIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Slight chance of thunderstorms in the evening.
* Chance of Thunder..20%.
* Min Temperature....
* Valleys..........31-41.
* Mid Slope........33-43.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........81-91%.
* Mid Slope........63-73%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds becoming northeast 10 to 15 mph in
the late evening and overnight.
* Chc Wetting Rain...15%.
* Mixing Height......3200-4200 ft agl decreasing to 600-1100 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming partly cloudy. Slight
chance of thunderstorms in the afternoon.
* Chance of Thunder..20%.
* Max Temperature....
* Valleys..........62-72.
* Mid Slope........57-67.
* Min Humidity.......
* Valleys..........23-33%.
* Mid Slope........28-38%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...10%.
* Mixing Height......1200-1700 ft agl increasing to 4500-5500 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.Extended...
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows
33-43. Downslope 2 to 5 mph.
.SATURDAY...Clear. Highs 67-77. Lows 33-43. Slope winds.
.SUNDAY...Clear. Highs 68-78. Lows 34-44. Slope winds.
.MONDAY...Clear. Highs 69-79. Lows 34-44. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 71-81. Lows 36-46.
$$
.8 to 14 day outlook for (Thu Sep 18 through Wed Sep 24)
Above normal temperatures and precipitation.
=
$$
http://weather.gov/reno