


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Reno, NV
Issued by NWS Reno, NV
281 FNUS55 KREV 170856 FWFREV Fire Weather Planning Forecast National Weather Service Reno NV 156 AM PDT Sun Aug 17 2025 .DISCUSSION... Thunderstorms most probable near the Oregon border this afternoon with lesser odds in Mono County and far western Nevada. Otherwise, higher humidity and breezy afternoon winds prevail today. A warming and drying trend begins Monday with hot conditions by the weekend. A monsoonal pattern may develop late this week, increasing the potential for storms and new lightning ignitions Thursday into 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 NVZ420-180030- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the afternoon. * Chance of Thunder..10%. * Max Temperature.... * Valleys..........77-87. * Mid Slope........75-85. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........18-28%. * Mid Slope........20-30%. * 24 hr trend......8% wetter. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 10 to 15 mph with gusts of 25 to 30 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...5%. * Mixing Height......1700-2700 ft agl increasing to 7200-8200 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........47-57. * Mid Slope........50-60. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........57-67%. * Mid Slope........42-52%. * 24 hr trend......7% drier. * 20-Foot Winds...... * Valleys/Slope....West winds 10 to 15 mph with gusts to 25 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........West winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......3900-4900 ft agl decreasing to 600-900 ft agl after midnight. * Transport Winds....West 10 to 20 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........79-89. * Mid Slope........78-88. * Min Humidity....... * Valleys..........11-21%. * Mid Slope........14-23%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph. * Ridge Top........Southwest winds 10 to 15 mph. Gusts to 20 mph in the morning. * Chc Wetting Rain...0%. * Mixing Height......1100-1600 ft agl increasing to 5000-6000 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 46-56. West winds 8 to 13 mph. .TUESDAY...Clear. Highs 82-92. Lows 46-56. West winds 10 to 15 mph. .WEDNESDAY...Clear. Highs 81-91. Lows 47-57. Slope winds. .THURSDAY...Clear. Highs 85-95. Lows 50-60. Slope winds. .FRIDAY THROUGH SATURDAY...Mostly clear. Slight chance of thunderstorms. Highs 87-97. Lows 55-65. $$ NVZ421-180030- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the afternoon. * Chance of Thunder..10%. * Max Temperature.... * Valleys..........77-87. * Mid Slope........71-81. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........12-22%. * Mid Slope........12-22%. * 24 hr trend......Little change. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming west 7 to 12 mph with gusts to 20 mph. * Ridge Top........South winds 10 to 15 mph. * Chc Wetting Rain...5%. * Mixing Height......2000-3000 ft agl increasing to 8500-9500 ft agl in the afternoon. * Transport Winds....South 10 to 15 mph. * Ventilation........Good increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........37-47. * Mid Slope........53-63. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........57-67%. * Mid Slope........40-50%. * 24 hr trend......Little change. * 20-Foot Winds...... * Valleys/Slope....West winds 8 to 13 mph with gusts to 20 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........Southwest winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......4900-5900 ft agl decreasing to 600-900 ft agl after midnight. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........81-91. * Mid Slope........75-85. * Min Humidity....... * Valleys..........9-19%. * Mid Slope........9-19%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 5 to 10 mph late in the afternoon. * Ridge Top........South winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......1200-1700 ft agl increasing to 5600-6600 ft agl in the afternoon. * Transport Winds....South 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 41-51. West winds 8 to 13 mph until early morning becoming downslope 2 to 5 mph. .TUESDAY...Clear. Highs 83-93. Lows 41-51. Slope winds. .WEDNESDAY THROUGH THURSDAY...Clear. Highs 85-95. Lows 42-52. Southwest winds 8 to 13 mph. .FRIDAY...Mostly clear. Slight chance of thunderstorms. Highs 87-97. Lows 48-58. .SATURDAY...Sunny. Chance of showers and a slight chance of thunderstorms. Highs 85-95. $$ CAZ272-180030- Greater Lake Tahoe and Truckee Area- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the afternoon. * Chance of Thunder..20%. * Max Temperature.... * Valleys..........67-77. * Mid Slope........64-74. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........33-43%. * Mid Slope........32-42%. * 24 hr trend......8% wetter. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 9 to 15 mph with gusts to 25 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...5%. * Mixing Height......1500-2500 ft agl increasing to 4900-5900 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Good increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * 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........52-62%. * 24 hr trend......6% drier. * 20-Foot Winds...... * Valleys/Slope....Southwest winds 9 to 16 mph with gusts to 25 mph in the evening becoming downslope 2 to 5 mph. * Ridge Top........Southwest winds 10 to 15 mph with gusts to 30 mph. * Chc Wetting Rain...0%. * Mixing Height......2000-3000 ft agl decreasing to 600-800 ft agl after midnight. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Very good decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........69-79. * Mid Slope........67-77. * Min Humidity....... * Valleys..........22-32%. * Mid Slope........21-31%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 7 to 12 mph late in the afternoon. * Ridge Top........Southwest winds 10 to 20 mph with gusts to 30 mph. * Chc Wetting Rain...0%. * Mixing Height......1100-1600 ft agl increasing to 3500-4500 ft agl in the afternoon. * Transport Winds....South 10 to 15 mph. * Ventilation........Good increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 40-50. West winds 7 to 12 mph in the evening becoming downslope 2 to 5 mph. .TUESDAY...Clear. Highs 72-82. Lows 40-50. Southwest winds 10 to 15 mph. .WEDNESDAY...Clear. Highs 74-84. Lows 40-50. Slope winds. .THURSDAY...Clear. Highs 78-88. Lows 45-55. Slope winds. .FRIDAY THROUGH SATURDAY...Mostly clear. Slight chance of thunderstorms. Highs 78-88. Lows 49-59. $$ NVZ423-180030- West Humboldt Basin in Pershing County- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........85-91. * Mid Slope........80-90. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........13-23%. * Mid Slope........14-23%. * 24 hr trend......6% wetter. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 8 to 13 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...5%. * Mixing Height......1600-2600 ft agl increasing to 8700-9700 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........53-63. * Mid Slope........55-64. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........44-54%. * Mid Slope........36-46%. * 24 hr trend......5% drier. * 20-Foot Winds...... * Valleys/Slope....West winds 8 to 13 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........West winds 10 to 15 mph. * Chc Wetting Rain...0%. * Mixing Height......5000-6000 ft agl decreasing to 600-800 ft agl after midnight. * Transport Winds....West 10 to 15 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........87-95. * Mid Slope........83-93. * Min Humidity....... * Valleys..........11-17%. * Mid Slope........11-17%. * 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......1000-1500 ft agl increasing to 5800-6800 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Marginal increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 52-62. West winds 7 to 12 mph in the evening becoming downslope 2 to 5 mph. .TUESDAY...Clear. Highs 89-97. Lows 52-62. Slope winds. .WEDNESDAY THROUGH THURSDAY...Clear. Highs 91-101. Lows 52-62. Slope winds. .FRIDAY THROUGH SATURDAY...Clear. Highs 94-102. Lows 57-67. $$ NVZ429-180030- Lahontan Basin including Churchill and Eastern Mineral Counties- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........83-93. * Mid Slope........79-89. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........9-19%. * Mid Slope........10-20%. * 24 hr trend......Little change. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...0%. * Mixing Height......1700-2700 ft agl increasing to 9000-10000 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........53-63. * Mid Slope........55-65. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........47-57%. * Mid Slope........32-42%. * 24 hr trend......Little change. * 20-Foot Winds...... * Valleys/Slope....West winds 7 to 12 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...0%. * Mixing Height......5300-6300 ft agl decreasing to 600-800 ft agl after midnight. * Transport Winds....West 10 to 15 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........86-96. * Mid Slope........83-93. * Min Humidity....... * Valleys..........7-17%. * Mid Slope........8-17%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph. * Ridge Top........South winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......1100-1600 ft agl increasing to 5500-6500 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 51-61. Northwest winds 7 to 12 mph. .TUESDAY...Clear. Highs 88-98. Lows 51-61. Southwest winds 10 to 15 mph. .WEDNESDAY THROUGH THURSDAY...Clear. Highs 90-100. Lows 53-63. Slope winds. .FRIDAY THROUGH SATURDAY...Mostly clear. Slight chance of thunderstorms. Highs 92-102. Lows 57-67. $$ CAZ270-278-NVZ458-180030- Surprise Valley California-Eastern Lassen County- Northern Washoe County- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Partly cloudy then becoming sunny. Chance of thunderstorms in the afternoon. * Chance of Thunder..30%. * Max Temperature.... * Valleys..........78-88. * Mid Slope........74-82. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........19-29%. * Mid Slope........24-34%. * 24 hr trend......8% wetter. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 9 to 14 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...10%. * Mixing Height......1700-2700 ft agl increasing to 7600-8600 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Partly cloudy then becoming clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........42-52. * Mid Slope........47-57. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........64-74%. * Mid Slope........48-58%. * 24 hr trend......7% drier. * 20-Foot Winds...... * Valleys/Slope....West winds 9 to 14 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........West winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...5%. * Mixing Height......4000-5000 ft agl decreasing to 600-800 ft agl after midnight. * Transport Winds....West 10 to 20 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........80-90. * Mid Slope........77-85. * Min Humidity....... * Valleys..........11-20%. * Mid Slope........14-19%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 9 to 14 mph with gusts to 25 mph in the afternoon. * Ridge Top........Southwest winds 10 to 20 mph with gusts to 30 mph. * Chc Wetting Rain...0%. * Mixing Height......1000-1500 ft agl increasing to 5100-6100 ft agl in the afternoon. * Transport Winds....Light winds becoming south 15 to 20 mph in the afternoon. * Ventilation........Fair increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 42-52. West winds 9 to 15 mph until early morning becoming downslope 2 to 5 mph. .TUESDAY...Clear. Highs 84-94. Lows 42-52. West winds 10 to 15 mph. .WEDNESDAY THROUGH THURSDAY...Clear. Highs 86-96. Lows 43-53. Slope winds. .FRIDAY THROUGH SATURDAY...Clear. Highs 90-100. Lows 50-60. $$ CAZ271-180030- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Mostly sunny. Slight chance of thunderstorms in the afternoon. * Chance of Thunder..20%. * Max Temperature.... * Valleys..........73-83. * Mid Slope........70-80. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........27-37%. * Mid Slope........28-38%. * 24 hr trend......10% wetter. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 10 to 15 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph. * Chc Wetting Rain...10%. * Mixing Height......1600-2600 ft agl increasing to 6200-7200 ft agl in the afternoon. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........34-44. * Mid Slope........43-53. * 24 hr trend......4 degrees cooler. * Max Humidity....... * Valleys..........74-84%. * Mid Slope........58-68%. * 24 hr trend......8% drier. * 20-Foot Winds...... * Valleys/Slope....West winds 9 to 14 mph in the evening becoming downslope 2 to 5 mph. * Ridge Top........Southwest winds 10 to 15 mph with gusts to 30 mph. * Chc Wetting Rain...0%. * Mixing Height......2700-3700 ft agl decreasing to 600-700 ft agl after midnight. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........74-84. * Mid Slope........72-82. * Min Humidity....... * Valleys..........14-24%. * Mid Slope........15-25%. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming southwest 8 to 13 mph with gusts to 20 mph in the afternoon. * Ridge Top........Southwest winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......1100-1600 ft agl increasing to 4600-5600 ft agl in the afternoon. * Transport Winds....Light winds becoming south 15 to 20 mph in the afternoon. * Ventilation........Good increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 35-45. West winds 9 to 14 mph in the evening becoming downslope 2 to 5 mph. .TUESDAY...Clear. Highs 78-88. Lows 35-45. Southwest winds 10 to 15 mph. .WEDNESDAY...Clear. Highs 80-90. Lows 36-46. Slope winds. .THURSDAY...Clear. Highs 86-96. Lows 40-50. Slope winds. .FRIDAY THROUGH SATURDAY...Clear. Highs 86-96. Lows 44-54. $$ CAZ274-180030- Southern Mono County- 156 AM PDT Sun Aug 17 2025 .TODAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........74-84. * Mid Slope........70-80. * 24 hr trend......Little change. * Min Humidity....... * Valleys..........11-21%. * Mid Slope........14-24%. * 24 hr trend......Little change. * 20-Foot Winds...... * Valleys/Slope....Upslope 4 to 8 mph becoming south 9 to 14 mph with gusts to 25 mph in the afternoon. * Ridge Top........South winds 10 to 15 mph. Gusts to 25 mph in the afternoon. * Chc Wetting Rain...5%. * Mixing Height......2100-3100 ft agl increasing to 7700-8700 ft agl in the afternoon. * Transport Winds....South 10 to 15 mph. * Ventilation........Good increasing to excellent in the afternoon. .TONIGHT... * Sky/Weather........Clear. * Chance of Thunder..0%. * Min Temperature.... * Valleys..........37-47. * Mid Slope........41-51. * 24 hr trend......Little change. * Max Humidity....... * Valleys..........57-67%. * Mid Slope........42-52%. * 24 hr trend......6% drier. * 20-Foot Winds...... * Valleys/Slope....Southwest winds 9 to 14 mph with gusts to 25 mph until early morning becoming downslope 2 to 5 mph. * Ridge Top........Southwest winds 10 to 15 mph. Gusts to 25 mph in the evening. * Chc Wetting Rain...0%. * Mixing Height......4700-5700 ft agl decreasing to 600-1000 ft agl after midnight. * Transport Winds....Southwest 10 to 15 mph. * Ventilation........Excellent decreasing to marginal after midnight. .MONDAY... * Sky/Weather........Sunny. * Chance of Thunder..0%. * Max Temperature.... * Valleys..........78-88. * Mid Slope........74-84. * Min Humidity....... * Valleys..........7-17%. * Mid Slope........8-17%. * 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........South winds 10 to 15 mph with gusts to 25 mph. * Chc Wetting Rain...0%. * Mixing Height......1100-1600 ft agl increasing to 4400-5400 ft agl in the afternoon. * Transport Winds....South 10 to 15 mph. * Ventilation........Fair increasing to excellent in the afternoon. .Extended... .MONDAY NIGHT...Clear. Lows 40-50. South winds 6 to 11 mph in the evening becoming downslope 2 to 5 mph, then becoming southwest 7 to 12 mph after midnight. .TUESDAY...Clear. Highs 78-88. Lows 40-50. Slope winds. .WEDNESDAY THROUGH THURSDAY...Clear. Highs 82-92. Lows 41-51. Slope winds. .FRIDAY...Mostly clear. Slight chance of thunderstorms. Highs 82-92. Lows 48-58. .SATURDAY...Sunny. Chance of showers and a slight chance of thunderstorms. Highs 80-90. $$ .8 to 14 day outlook for (Sun Aug 24 through Sat Aug 30) Above normal temperatures and precipitation. = $$ http://weather.gov/reno