Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
643
FNUS55 KREV 190936
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
236 AM PDT Sat Sep 19 2026
.DISCUSSION...
Dry and mild conditions with light E/NE breezes persist through the
weekend. Gusts up to 30 mph are possible across Sierra ridgetops.
A weak low pressure system may bring low chances of rain and
isolated thunderstorms to the eastern Sierra south of Tahoe late
Sunday into Monday. Otherwise, dry weather and seasonally warm
temperatures prevail. A wetter and windier pattern is favored late
next week into next weekend as a large trough approaches the West
Coast.
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
NVZ420-200045-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........71-81.
* Mid Slope........67-77.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........9-19%.
* Mid Slope........16-24%.
* 24 hr trend......6% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming east 7 to 12 mph in
the afternoon.
* Ridge Top........Light winds.
* Mixing Height......1700-2200 ft agl increasing to 4400-5400 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........42-52.
* Mid Slope........46-53.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........36-46%.
* Mid Slope........29-39%.
* 24 hr trend......12% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Mixing Height......2600-3600 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........73-83.
* Mid Slope........70-80.
* Min Humidity.......
* Valleys..........8-18%.
* Mid Slope........14-22%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming east 7 to 12 mph in
the afternoon.
* Ridge Top........Light winds.
* Mixing Height......1200-1700 ft agl increasing to 4600-5600 ft
agl in the afternoon.
* Transport Winds....Light winds becoming southeast 10 to 15 mph in
the afternoon.
* Ventilation........Fair increasing to very good in the afternoon.
.Extended...
.SUNDAY NIGHT...Mostly cloudy. Lows 47-57. Downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Highs 75-85. Lows 46-56. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 77-87. Lows 46-56. Slope
winds.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 77-87. Lows 46-56.
$$
NVZ421-200045-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........70-80.
* Mid Slope........64-74.
* 24 hr trend......5 degrees warmer.
* Min Humidity.......
* Valleys..........15-23%.
* Mid Slope........16-26%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming northeast 9 to 14
mph in the afternoon.
* Ridge Top........Northeast winds 10 to 15 mph. Gusts to 20 mph
late in the afternoon.
* Mixing Height......1500-2000 ft agl increasing to 4800-5800 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........36-46.
* Mid Slope........45-55.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........35-45%.
* Mid Slope........27-37%.
* 24 hr trend......14% drier.
* 20-Foot Winds......
* Valleys/Slope....North winds 8 to 13 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds becoming east 10 to 15 mph in the
late evening and overnight.
* Mixing Height......2500-3500 ft agl decreasing to 600 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........73-83.
* Mid Slope........67-77.
* Min Humidity.......
* Valleys..........11-21%.
* Mid Slope........12-22%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming northeast 9 to 14
mph in the afternoon.
* Ridge Top........East winds 10 to 15 mph. Gusts to 20 mph in the
afternoon.
* Mixing Height......1500-2000 ft agl increasing to 7200-8200 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Fair increasing to excellent in the afternoon.
.Extended...
.SUNDAY NIGHT...Mostly cloudy. Lows 39-49. North winds 8 to 13 mph
in the evening becoming downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Highs 72-82. Lows 38-48. Slope winds.
.TUESDAY...Clear. Highs 73-83. Lows 38-48. Slope winds.
.WEDNESDAY...Clear. Highs 76-86. Lows 38-48. Slope winds.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 75-85. Lows 39-49.
$$
CAZ272-200045-
Greater Lake Tahoe and Truckee Area-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........66-76.
* Mid Slope........63-73.
* 24 hr trend......5 degrees warmer.
* Min Humidity.......
* Valleys..........16-26%.
* Mid Slope........19-29%.
* 24 hr trend......5% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds. Gusts to 25 mph in the morning.
* Mixing Height......1200-1700 ft agl increasing to 4000-5000 ft
agl in the afternoon.
* Transport Winds....East 10 to 15 mph.
* Ventilation........Good.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........39-49.
* Mid Slope........42-52.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........44-54%.
* Mid Slope........35-45%.
* 24 hr trend......14% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds. Gusts to 25 mph in the late evening
and overnight.
* Mixing Height......2600-3600 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
Patchy smoke in the afternoon.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........67-77.
* Mid Slope........64-74.
* Min Humidity.......
* Valleys..........18-28%.
* Mid Slope........19-29%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Mixing Height......1200-1700 ft agl increasing to 5300-6300 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to very good in the afternoon.
.Extended...
.SUNDAY NIGHT...Mostly cloudy. Patchy smoke in the evening. Lows
42-52. Downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Highs 67-77. Lows 41-51. Slope winds.
.TUESDAY...Clear. Highs 68-78. Lows 41-51. Slope winds.
.WEDNESDAY...Clear. Highs 70-80. Lows 41-51. Slope winds.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 67-77. Lows 42-52.
$$
NVZ423-200045-
West Humboldt Basin in Pershing County-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........75-81.
* Mid Slope........69-79.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........16-21%.
* Mid Slope........17-23%.
* 24 hr trend......5% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Mixing Height......1700-2700 ft agl increasing to 5500-6500 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........42-52.
* Mid Slope........44-54.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........37-47%.
* Mid Slope........27-37%.
* 24 hr trend......12% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Mixing Height......3100-4100 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........79-85.
* Mid Slope........73-83.
* Min Humidity.......
* Valleys..........12-18%.
* Mid Slope........13-19%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Mixing Height......1400-1900 ft agl increasing to 5800-6800 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.Extended...
.SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Lows 47-57. Downslope 2 to 5 mph becoming north 7 to 12 mph
after midnight.
.MONDAY...Partly cloudy. Highs 82-88. Lows 47-57. Slope winds.
.TUESDAY...Clear. Highs 82-88. Lows 47-57. Slope winds.
.WEDNESDAY...Clear. Highs 83-89. Lows 47-57. Slope winds.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 82-90. Lows 48-58.
$$
NVZ429-200045-
Lahontan Basin including Churchill and Eastern Mineral Counties-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........72-81.
* Mid Slope........68-78.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........12-22%.
* Mid Slope........13-21%.
* 24 hr trend......5% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming north 5 to 10 mph.
* Ridge Top........North winds 10 to 15 mph.
* Mixing Height......1700-2200 ft agl increasing to 5000-6000 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........39-49.
* Mid Slope........45-55.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........41-51%.
* Mid Slope........29-39%.
* 24 hr trend......11% drier.
* 20-Foot Winds......
* Valleys/Slope....North winds 5 to 10 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Mixing Height......2600-3600 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........76-86.
* Mid Slope........72-82.
* Min Humidity.......
* Valleys..........8-18%.
* Mid Slope........9-17%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northeast winds 10 to 15 mph. Gusts to 20 mph
early in the afternoon.
* Mixing Height......1300-1800 ft agl increasing to 5600-6600 ft
agl in the afternoon.
* Transport Winds....Light winds becoming southeast 10 to 15 mph in
the afternoon.
* Ventilation........Fair increasing to very good in the afternoon.
.Extended...
.SUNDAY NIGHT...Mostly cloudy. Lows 45-55. Northeast winds 5 to
10 mph in the evening becoming downslope 2 to 5 mph.
.MONDAY...Mostly cloudy. Highs 77-87. Lows 45-55. Southeast winds
10 to 15 mph.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 79-89. Lows 45-55. Slope
winds.
.THURSDAY...Clear. Highs 81-91. Lows 46-56.
.FRIDAY...Partly cloudy. Highs 79-89.
$$
CAZ270-278-NVZ458-200045-
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........72-81.
* Mid Slope........69-75.
* 24 hr trend......5 degrees warmer.
* Min Humidity.......
* Valleys..........12-22%.
* Mid Slope........15-23%.
* 24 hr trend......10% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Mixing Height......1600-2100 ft agl increasing to 5200-6200 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Good.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........38-48.
* Mid Slope........42-52.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........41-51%.
* Mid Slope........34-44%.
* 24 hr trend......19% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Mixing Height......2900-3900 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........74-84.
* Mid Slope........71-79.
* Min Humidity.......
* Valleys..........10-20%.
* Mid Slope........13-21%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 8 to 13
mph with gusts to 20 mph in the afternoon.
* Ridge Top........Southeast winds 10 to 15 mph.
* Mixing Height......1400-1900 ft agl increasing to 5900-6900 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Fair increasing to very good in the afternoon.
.Extended...
.SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Lows 42-52. Downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Highs 77-87. Lows 41-51. Slope winds.
.TUESDAY...Clear. Highs 78-88. Lows 41-51. Slope winds.
.WEDNESDAY...Clear. Highs 79-89. Lows 41-51. Slope winds.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 77-87. Lows 41-51.
$$
CAZ271-200045-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........72-82.
* Mid Slope........70-78.
* 24 hr trend......6 degrees warmer.
* Min Humidity.......
* Valleys..........16-24%.
* Mid Slope........16-24%.
* 24 hr trend......11% drier.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Mixing Height......1500-2000 ft agl increasing to 5300-6300 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to good in the afternoon.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........35-45.
* Mid Slope........42-52.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........45-55%.
* Mid Slope........34-44%.
* 24 hr trend......22% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph. Gusts to 20 mph after
midnight.
* Ridge Top........Light winds becoming east 10 to 15 mph with
gusts to 25 mph in the late evening and
overnight.
* Mixing Height......3000-4000 ft agl in the evening then 200-500
ft agl.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........74-84.
* Mid Slope........71-79.
* Min Humidity.......
* Valleys..........14-22%.
* Mid Slope........15-23%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 7 to 12
mph with gusts to 20 mph in the afternoon.
* Ridge Top........Light winds. Gusts to 20 mph in the morning.
* Mixing Height......1300-1800 ft agl increasing to 6700-7700 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Good increasing to very good in the afternoon.
.Extended...
.SUNDAY NIGHT...Mostly cloudy. Lows 38-48. Downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Highs 75-85. Lows 37-47. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Clear. Highs 76-86. Lows 37-47. Slope
winds.
.THURSDAY...Partly cloudy. Highs 76-86. Lows 37-47.
.FRIDAY...Partly cloudy. Highs 71-81.
$$
CAZ274-200045-
Southern Mono County-
236 AM PDT Sat Sep 19 2026
.TODAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........67-77.
* Mid Slope........64-74.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........13-23%.
* Mid Slope........15-25%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........North winds 10 to 15 mph. Gusts to 25 mph in the
morning.
* Mixing Height......1400-1900 ft agl increasing to 4500-5500 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Good.
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Min Temperature....
* Valleys..........37-47.
* Mid Slope........38-48.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........40-50%.
* Mid Slope........26-36%.
* 24 hr trend......14% drier.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Mixing Height......2700-3700 ft agl decreasing to 600 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Good decreasing to poor after midnight.
.SUNDAY...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Chc Wetting Rain...0%.
* Max Temperature....
* Valleys..........68-78.
* Mid Slope........65-75.
* Min Humidity.......
* Valleys..........10-20%.
* Mid Slope........13-23%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........South winds 10 to 15 mph. Gusts to 25 mph in the
afternoon.
* Mixing Height......1500-2000 ft agl increasing to 6800-7800 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Fair increasing to excellent in the afternoon.
.Extended...
.SUNDAY NIGHT...Partly cloudy. Lows 40-50. Downslope 2 to 5 mph.
.MONDAY...Partly cloudy. Slight chance of showers. Highs 65-75. Lows
35-45. Slope winds.
.TUESDAY...Clear. Highs 66-76. Lows 35-45. Slope winds.
.WEDNESDAY...Clear. Highs 70-80. Lows 37-47. Slope winds.
.THURSDAY THROUGH FRIDAY...Clear. Highs 70-80. Lows 38-48.
$$
.8 to 14 day outlook for (Sat Sep 26 through Fri Oct 2)
Above normal temperatures and Little or no precipitation.
=
$$
http://weather.gov/reno