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Updated:August 12, 2026 3:15 pm PDT

Red Flag Warning RED FLAG WARNING  
Alpine County

  Effective: Wed, 8/12 11:04am Severity:  Severe 
  Updated: August 12, 2026 3:15 pm Urgency: Expected
  Expires: Thu, 8/13 5:00pm Certainty: Likely

Areas Affected: Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50 - Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
 
Alert Details:
The National Weather Service in Sacramento has issued a Red Flag
Warning for thunderstorms and strong outflow winds, which is in
effect from 5 AM to 9 PM PDT Thursday. The Fire Weather Watch is
no longer in effect.

* Affected Area...Fire Zone 136 Sierra (El Dorado-Amador) Above
5000 ft and Fire Zone 139 Sierra (Cal-Tuo) Above 5000 ft.

* Thunderstorms...Isolated to scattered coverage of a mix of wet
and dry thunderstorms expected. Lightning strikes may also
occur outside of main precipitation cores.

* Outflow Winds...Gusty and erratic outflow winds could occur
near any thunderstorm development.

* Impacts...Lightning can create new fire starts and may combine
with strong outflow winds to cause a fire to rapidly grow in
size and intensity.

Information:
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
Fire Weather Watch FIRE WEATHER WATCH  
Alpine County

  Effective: Wed, 8/12 12:22pm Severity:  Severe 
  Updated: August 12, 2026 3:15 pm Urgency: Future
  Expires: Thu, 8/13 1:45pm Certainty: Possible

Areas Affected: Greater Lake Tahoe and Truckee Area
 
Alert Details:
* CHANGES...None.

* Affected Area...Fire Weather Zone 272 Greater Lake Tahoe and
Truckee Area.

* Thunderstorms...Thunderstorm chances increase to 15 to 30
percent for Thursday leading to lightning strikes on dry fuels
especially early Thursday morning. Thunderstorms will produce
hail and periods of moderate to heavy rainfall Thursday
afternoon and evening.

* Outflow Winds...Up to 40 mph.

* Impacts...Lightning can create new fire starts and may combine
with strong outflow winds to cause a fire to rapidly grow in
size and intensity before first responders can contain them.

Information:
Avoid outdoor activities that can cause a spark near dry
vegetation, such as yard work, target shooting, or campfires.
Follow local fire restrictions. Check weather.gov/reno for
updates and livingwithfire.info for preparedness tips.