Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
564
FNUS55 KREV 202022
FWFREV
Fire Weather Planning Forecast
National Weather Service Reno NV
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY
FOR LOWER ELEVATIONS OF WESTERN NV AND NORTHEAST CA...
...THUNDERSTORM CHANCES RETURN FRIDAY AFTERNOON WITH ISOLATED DRY
LIGHTNING STRIKES POSSIBLE...
.DISCUSSION...
High pressure brings dry and warmer conditions through Thursday, with
the peak heat expected Friday. Thunderstorm chances return Friday
afternoon mainly south of US-50, with isolated dry lightning strikes
that could lead to new fire starts. Showers and storms will increase
this weekend and continue through the middle of next week with lower
chances for dry lightning, but increased risk for heavy rain.
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
NVZ420-211500-
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY...
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........50-60.
* Mid Slope........54-64.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........30-40%.
* Mid Slope........20-30%.
* 24 hr trend......8% drier.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 8 to 13 mph in the evening
becoming downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......4600-5600 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny then becoming partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........85-95.
* Mid Slope........84-94.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........7-17%.
* Mid Slope........9-15%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming northeast 7 to 12
mph in the afternoon.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 6300-7300 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to very good in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........56-66.
* Mid Slope........59-69.
* Max Humidity.......
* Valleys..........29-39%.
* Mid Slope........20-30%.
* 20-Foot Winds......
* Valleys/Slope....Downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......4400-5400 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the
afternoon.
* Chance of Thunder..10%.
* Max Temperature....
* Valleys..........88-98.
* Mid Slope........87-97.
* Min Humidity.......
* Valleys..........8-18%.
* Mid Slope........10-18%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...5%.
* Mixing Height......600-900 ft agl increasing to 6600-7600 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to excellent in the
afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Slight
chance of thunderstorms in the evening. Lows 57-67. West winds 8 to
13 mph becoming downslope 2 to 5 mph after midnight.
.SATURDAY...Mostly cloudy. Chance of thunderstorms. Highs 87-97.
Lows 57-67. Southwest winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Mostly cloudy. Chance of thunderstorms.
Highs 82-92. Lows 53-63. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 75-85. Lows 51-61.
$$
NVZ421-211500-
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY...
.TONIGHT...
* Sky/Weather........Clear then becoming partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........44-54.
* Mid Slope........56-66.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........28-38%.
* Mid Slope........18-28%.
* 24 hr trend......10% drier.
* 20-Foot Winds......
* Valleys/Slope....North winds 9 to 15 mph becoming downslope 2 to
5 mph.
* Ridge Top........Light winds becoming east 10 to 15 mph after
midnight.
* Chc Wetting Rain...0%.
* Mixing Height......4700-5700 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Excellent decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Partly cloudy then becoming mostly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........86-96.
* Mid Slope........80-90.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........8-16%.
* Mid Slope........8-18%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming north 9 to 14 mph in
the afternoon.
* Ridge Top........East winds 10 to 15 mph until late afternoon
becoming light.
* Chc Wetting Rain...0%.
* Mixing Height......1700-2200 ft agl increasing to 8500-9500 ft
agl in the afternoon.
* Transport Winds....South 10 to 15 mph.
* Ventilation........Fair increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........49-59.
* Mid Slope........61-71.
* Max Humidity.......
* Valleys..........32-42%.
* Mid Slope........20-30%.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 9 to 14 mph becoming downslope
2 to 5 mph after midnight.
* Ridge Top........West winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......5000-6000 ft agl decreasing to 600-900 ft agl
after midnight.
* Transport Winds....West 10 to 15 mph.
* Ventilation........Excellent decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming mostly cloudy. Chance of
thunderstorms in the afternoon.
* Chance of Thunder..30%.
* Max Temperature....
* Valleys..........88-98.
* Mid Slope........81-91.
* Min Humidity.......
* Valleys..........9-19%.
* Mid Slope........10-20%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming west 5 to 10 mph
late in the afternoon.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...15%.
* Mixing Height......600-900 ft agl increasing to 8800-9800 ft agl
in the afternoon.
* Transport Winds....Light winds becoming south 10 to 15 mph in the
afternoon.
* Ventilation........Marginal increasing to excellent in the
afternoon.
.Extended...
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Chance
of thunderstorms in the evening. Lows 50-60. West winds 9 to 14 mph
becoming downslope 2 to 5 mph after midnight.
.SATURDAY...Mostly cloudy. Chance of thunderstorms. Highs 84-94.
Lows 48-58. Southwest winds 10 to 15 mph.
.SUNDAY...Mostly cloudy. Chance of thunderstorms. Highs 79-89. Lows
45-55. Slope winds.
.MONDAY...Showers likely and a chance of thunderstorms. Highs 76-86.
Lows 44-54. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 73-83. Lows 41-51.
$$
CAZ272-211500-
Greater Lake Tahoe and Truckee Area-
122 PM PDT Wed Aug 20 2025
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........45-55.
* Mid Slope........49-59.
* 24 hr trend......5 degrees warmer.
* Max Humidity.......
* Valleys..........46-56%.
* Mid Slope........23-33%.
* 24 hr trend......9% drier.
* 20-Foot Winds......
* Valleys/Slope....West winds 6 to 11 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds becoming east 10 to 15 mph after
midnight.
* Chc Wetting Rain...0%.
* Mixing Height......3500-4500 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny then becoming partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........78-88.
* Mid Slope........76-86.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........13-23%.
* Mid Slope........12-22%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........East winds 10 to 15 mph until late afternoon
becoming light.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 6000-7000 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Fair increasing to very good in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........50-60.
* Mid Slope........54-64.
* Max Humidity.......
* Valleys..........47-57%.
* Mid Slope........26-36%.
* 20-Foot Winds......
* Valleys/Slope....West winds 6 to 11 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......3300-4300 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Good decreasing to poor after midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming partly cloudy. Slight
chance of thunderstorms in the afternoon.
* Chance of Thunder..10%.
* Max Temperature....
* Valleys..........79-89.
* Mid Slope........78-88.
* Min Humidity.......
* Valleys..........16-26%.
* Mid Slope........15-25%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southwest 6 to 11
mph late in the afternoon.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-800 ft agl increasing to 6400-7400 ft agl
in the afternoon.
* Transport Winds....Light winds becoming south 10 to 15 mph in the
afternoon.
* Ventilation........Poor increasing to excellent in the afternoon.
.Extended...
.FRIDAY NIGHT...Clear. Lows 51-61. West winds 8 to 13 mph in the
evening becoming downslope 2 to 5 mph.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of thunderstorms.
Highs 76-86. Lows 48-58. Slope winds.
.MONDAY...Mostly cloudy. Chance of thunderstorms. Highs 71-81. Lows
45-55. Slope winds.
.TUESDAY...Mostly cloudy. Chance of thunderstorms. Highs 68-78. Lows
43-53.
.WEDNESDAY...Partly cloudy. Chance of thunderstorms. Highs 67-77.
$$
NVZ423-211500-
West Humboldt Basin in Pershing County-
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY...
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........54-64.
* Mid Slope........57-67.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........24-34%.
* Mid Slope........18-28%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....North winds 7 to 12 mph.
* Ridge Top........North winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......4600-5600 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Very good decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........93-99.
* Mid Slope........88-98.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........8-13%.
* Mid Slope........8-13%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Northeast winds 8 to 13 mph.
* Ridge Top........Northeast winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 7500-8500 ft
agl in the afternoon.
* Transport Winds....East 10 to 15 mph.
* Ventilation........Fair increasing to very good in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Mostly cloudy then becoming partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........57-67.
* Mid Slope........60-69.
* Max Humidity.......
* Valleys..........20-30%.
* Mid Slope........17-27%.
* 20-Foot Winds......
* Valleys/Slope....North winds 7 to 12 mph.
* Ridge Top........North winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......4900-5900 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Excellent decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Partly cloudy then becoming sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........97-103.
* Mid Slope........92-102.
* Min Humidity.......
* Valleys..........8-13%.
* Mid Slope........9-14%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Northeast winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-800 ft agl increasing to 6600-7600 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Marginal increasing to very good in the
afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Lows 60-70. Downslope winds 2 to 5
mph.
.SATURDAY...Mostly cloudy. Slight chance of thunderstorms. Highs
95-101. Lows 60-70. Slope winds.
.SUNDAY...Mostly cloudy. Chance of thunderstorms. Highs 90-96. Lows
59-69. Slope winds.
.MONDAY...Mostly cloudy. Chance of thunderstorms. Highs 86-92. Lows
57-67. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 80-88. Lows 55-65.
$$
NVZ429-211500-
Lahontan Basin including Churchill and Eastern Mineral Counties-
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY...
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........53-63.
* Mid Slope........58-68.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........20-30%.
* Mid Slope........17-27%.
* 24 hr trend......8% drier.
* 20-Foot Winds......
* Valleys/Slope....North winds 8 to 13 mph with gusts to 20 mph
becoming downslope 2 to 5 mph after midnight.
* Ridge Top........Northwest winds 10 to 15 mph becoming light
after midnight.
* Chc Wetting Rain...0%.
* Mixing Height......4200-5200 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Excellent decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny then becoming partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........90-100.
* Mid Slope........87-97.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........7-13%.
* Mid Slope........8-13%.
* 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.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 7200-8200 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........57-67.
* Mid Slope........62-72.
* Max Humidity.......
* Valleys..........22-32%.
* Mid Slope........17-27%.
* 20-Foot Winds......
* Valleys/Slope....North winds 7 to 12 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......4600-5600 ft agl decreasing to 600-800 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Excellent decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the
afternoon.
* Chance of Thunder..10%.
* Max Temperature....
* Valleys..........94-104.
* Mid Slope........90-100.
* Min Humidity.......
* Valleys..........8-15%.
* Mid Slope........9-15%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-800 ft agl increasing to 7100-8100 ft agl
in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Poor increasing to excellent in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the
evening. Lows 60-70. West winds 9 to 14 mph becoming downslope 2 to 5
mph after midnight.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Chance of thunderstorms.
Highs 89-99. Lows 59-69. Southwest winds 10 to 15 mph.
.MONDAY...Mostly cloudy. Chance of thunderstorms. Highs 82-92. Lows
56-66. Southwest winds 10 to 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 79-89. Lows 54-64.
$$
CAZ278-NVZ458-211500-
Eastern Lassen County-Northern Washoe County-
122 PM PDT Wed Aug 20 2025
...HEAT ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM PDT SATURDAY...
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........46-56.
* Mid Slope........51-61.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........36-46%.
* Mid Slope........26-36%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 8 to 13 mph. Gusts to 20 mph in
the evening.
* Ridge Top........North winds 10 to 15 mph shifting to the
northeast late in the night.
* Chc Wetting Rain...0%.
* Mixing Height......4500-5500 ft agl decreasing to 600-700 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Very good decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........87-97.
* Mid Slope........84-92.
* 24 hr trend......4 degrees warmer.
* Min Humidity.......
* Valleys..........7-14%.
* Mid Slope........9-14%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming east 9 to 14 mph in
the late morning and afternoon.
* Ridge Top........East winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 7200-8200 ft
agl in the afternoon.
* Transport Winds....East 10 to 15 mph.
* Ventilation........Good increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........51-61.
* Mid Slope........56-66.
* Max Humidity.......
* Valleys..........25-35%.
* Mid Slope........19-29%.
* 20-Foot Winds......
* Valleys/Slope....Southeast winds 5 to 10 mph in the evening
becoming downslope 2 to 5 mph.
* Ridge Top........Light winds becoming northeast 10 to 15 mph
after midnight.
* Chc Wetting Rain...0%.
* Mixing Height......4700-5700 ft agl decreasing to 600-700 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........92-102.
* Mid Slope........89-97.
* Min Humidity.......
* Valleys..........8-15%.
* Mid Slope........9-14%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 8 to 13
mph in the afternoon.
* Ridge Top........Southeast winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......600-700 ft agl increasing to 6600-7600 ft agl
in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Marginal increasing to excellent in the
afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Lows 55-65. West winds 9 to 14 mph
becoming downslope 2 to 5 mph after midnight.
.SATURDAY...Partly cloudy. Slight chance of thunderstorms. Highs
90-100. Lows 55-65. West winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Mostly cloudy. Chance of thunderstorms.
Highs 84-94. Lows 54-64. West winds 10 to 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 77-87. Lows 52-62.
$$
CAZ270-211500-
Surprise Valley California-
122 PM PDT Wed Aug 20 2025
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........50-56.
* Mid Slope........50-55.
* 24 hr trend......Little change.
* Max Humidity.......
* Valleys..........47-57%.
* Mid Slope........43-53%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....North winds 8 to 13 mph.
* Chc Wetting Rain...0%.
* Mixing Height......4700-5700 ft agl decreasing to 700-1200 ft agl
after midnight.
* Transport Winds....North 10 to 15 mph.
* Ventilation........Very good decreasing to fair after midnight.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........89-94.
* Mid Slope........87-92.
* 24 hr trend......6 degrees warmer.
* Min Humidity.......
* Valleys..........10-15%.
* Mid Slope........12-17%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....North winds 8 to 13 mph shifting to the south 6
to 11 mph late in the afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......1600-2100 ft agl increasing to 9100-10100 ft
agl in the afternoon.
* Transport Winds....Light winds.
* Ventilation........Fair increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........53-60.
* Mid Slope........54-59.
* Max Humidity.......
* Valleys..........32-42%.
* Mid Slope........31-41%.
* 20-Foot Winds......
* Valleys/Slope....East winds 7 to 12 mph becoming downslope
2 to 5 mph after midnight.
* Chc Wetting Rain...0%.
* Mixing Height......5600-6600 ft agl decreasing to 700-1200 ft agl
after midnight.
* Transport Winds....East 10 to 15 mph.
* Ventilation........Very good decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........95-101.
* Mid Slope........91-96.
* Min Humidity.......
* Valleys..........11-16%.
* Mid Slope........11-16%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 9 to 14
mph in the afternoon.
* Chc Wetting Rain...0%.
* Mixing Height......700-1200 ft agl increasing to 8000-9000 ft agl
in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Marginal increasing to excellent in the
afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Lows 59-65. Southwest winds 8 to
13 mph in the evening becoming downslope 2 to 5 mph.
.SATURDAY...Partly cloudy. Slight chance of thunderstorms. Highs
93-98. Lows 59-65. Southwest winds 10 to 15 mph.
.SUNDAY...Mostly cloudy. Chance of thunderstorms. Highs 88-93. Lows
57-65. West winds 10 to 15 mph.
.MONDAY...Mostly cloudy. Chance of thunderstorms. Highs 85-91. Lows
56-62. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy. Chance of thunderstorms.
Highs 77-87. Lows 54-61.
$$
CAZ271-211500-
Western Lassen, Eastern Plumas, and Eastern Sierra Counties-
122 PM PDT Wed Aug 20 2025
.TONIGHT...
* Sky/Weather........Clear.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........40-50.
* Mid Slope........49-59.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........47-57%.
* Mid Slope........29-39%.
* 24 hr trend......6% drier.
* 20-Foot Winds......
* Valleys/Slope....Northwest winds 8 to 13 mph in the evening
becoming downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......4200-5200 ft agl decreasing to 600-700 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Very good decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........86-96.
* Mid Slope........84-92.
* 24 hr trend......6 degrees warmer.
* Min Humidity.......
* Valleys..........10-16%.
* Mid Slope........10-16%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 7 to 12
mph in the afternoon.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......1200-1700 ft agl increasing to 7800-8800 ft
agl in the afternoon.
* Transport Winds....Southeast 10 to 15 mph.
* Ventilation........Good increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........46-56.
* Mid Slope........55-65.
* Max Humidity.......
* Valleys..........35-45%.
* Mid Slope........26-36%.
* 20-Foot Winds......
* Valleys/Slope....Southwest winds 7 to 12 mph in the evening
becoming downslope 2 to 5 mph.
* Ridge Top........Light winds.
* Chc Wetting Rain...0%.
* Mixing Height......4600-5600 ft agl decreasing to 600-700 ft agl
after midnight.
* Transport Winds....Light winds.
* Ventilation........Excellent decreasing to poor after midnight.
.FRIDAY...
* Sky/Weather........Sunny.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........88-98.
* Mid Slope........85-95.
* Min Humidity.......
* Valleys..........10-18%.
* Mid Slope........11-17%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southwest 7 to 12
mph late in the afternoon.
* Ridge Top........South winds 10 to 15 mph.
* Chc Wetting Rain...5%.
* Mixing Height......600-700 ft agl increasing to 7400-8400 ft agl
in the afternoon.
* Transport Winds....Light winds becoming south 10 to 15 mph in the
afternoon.
* Ventilation........Poor increasing to excellent in the afternoon.
.Extended...
.FRIDAY NIGHT...Partly cloudy. Lows 48-58. West winds 9 to 15 mph in
the evening becoming downslope 2 to 5 mph.
.SATURDAY...Partly cloudy. Slight chance of thunderstorms. Highs
87-97. Lows 48-58. Southwest winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Chance of thunderstorms.
Highs 83-93. Lows 45-55. Slope winds.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Chance of thunderstorms.
Highs 76-86. Lows 42-52.
$$
CAZ274-211500-
Southern Mono County-
122 PM PDT Wed Aug 20 2025
.TONIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........44-54.
* Mid Slope........47-57.
* 24 hr trend......4 degrees warmer.
* Max Humidity.......
* Valleys..........34-44%.
* Mid Slope........21-31%.
* 24 hr trend......7% drier.
* 20-Foot Winds......
* Valleys/Slope....West winds 9 to 14 mph in the evening becoming
downslope 2 to 5 mph.
* Ridge Top........Light winds becoming southeast 10 to 15 mph in
the late evening and overnight.
* Chc Wetting Rain...0%.
* Mixing Height......5000-6000 ft agl decreasing to 600-1000 ft agl
after midnight.
* Transport Winds....Southwest 10 to 15 mph in the evening becoming
light.
* Ventilation........Excellent decreasing to marginal after
midnight.
.THURSDAY...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Max Temperature....
* Valleys..........82-92.
* Mid Slope........78-88.
* 24 hr trend......Little change.
* Min Humidity.......
* Valleys..........9-19%.
* Mid Slope........11-19%.
* 24 hr trend......Little change.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming southeast 8 to 13
mph in the afternoon.
* Ridge Top........South winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......1700-2700 ft agl increasing to 8400-9400 ft
agl in the afternoon.
* Transport Winds....South 10 to 15 mph.
* Ventilation........Good increasing to excellent in the afternoon.
.THURSDAY NIGHT...
* Sky/Weather........Partly cloudy.
* Chance of Thunder..0%.
* Min Temperature....
* Valleys..........48-58.
* Mid Slope........51-61.
* Max Humidity.......
* Valleys..........40-50%.
* Mid Slope........27-37%.
* 20-Foot Winds......
* Valleys/Slope....West winds 9 to 14 mph becoming downslope
2 to 5 mph after midnight.
* Ridge Top........Southwest winds 10 to 15 mph.
* Chc Wetting Rain...0%.
* Mixing Height......5300-6300 ft agl decreasing to 600-1000 ft agl
after midnight.
* Transport Winds....Southwest 10 to 15 mph.
* Ventilation........Excellent decreasing to marginal after
midnight.
.FRIDAY...
* Sky/Weather........Sunny then becoming mostly cloudy. Chance of
thunderstorms in the afternoon.
* Chance of Thunder..30%.
* Max Temperature....
* Valleys..........83-93.
* Mid Slope........79-89.
* Min Humidity.......
* Valleys..........11-21%.
* Mid Slope........13-23%.
* 20-Foot Winds......
* Valleys/Slope....Upslope 4 to 8 mph becoming south 8 to 13 mph in
the afternoon.
* Ridge Top........South winds 10 to 15 mph.
* Chc Wetting Rain...10%.
* Mixing Height......700-1200 ft agl increasing to 8200-9200 ft agl
in the afternoon.
* Transport Winds....Light winds becoming south 10 to 15 mph in the
afternoon.
* Ventilation........Marginal increasing to excellent in the
afternoon.
.Extended...
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Chance
of thunderstorms in the evening, then slight chance of showers after
midnight. Lows 48-58. Southwest winds 9 to 14 mph in the evening
becoming downslope 2 to 5 mph.
.SATURDAY...Showers likely and a chance of thunderstorms. Highs
78-88. Lows 47-57. Slope winds.
.SUNDAY THROUGH MONDAY...Showers likely and a chance of
thunderstorms. Highs 72-82. Lows 43-53. Slope winds.
.TUESDAY...Mostly cloudy. Chance of thunderstorms. Highs 69-79. Lows
41-51.
.WEDNESDAY...Partly cloudy. Chance of thunderstorms. Highs 69-79.
$$
.8 to 14 day outlook for (Thu Aug 28 through Wed Sep 3)
Near normal temperatures and Above normal precipitation.
=
$$
http://weather.gov/reno