Sierra County, CA
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Tuesday 07/21 3:22 PM PDT – Tuesday 07/21 5:15 PM PDT
Issued by NWS Reno NV
At 319 PM PDT, strong thunderstorms are ongoing across western Nevada and portions of the eastern Sierra, increasing coverage northward throughout the afternoon.
HAZARD...Wind gusts up to 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.
Locations impacted include... Reno, Carson City, South Lake Tahoe, Fallon, Lovelock, Tahoe City, Kings Beach, Gardnerville, Virginia City, Boca Reservoir, Twin Lakes, Lahontan Reservoir, Incline Village, Alpine Meadows, Olympic Valley, Stampede Reservoir, Bodie, Benton, Bridgeport, and Prosser Creek Reservoir.
What to Do
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways.
Areas Impacted
- Lassen-Eastern Plumas-Eastern Sierra Counties
- Greater Lake Tahoe Area
- Mono
- Mineral and Southern Lyon Counties
- Greater Lake Tahoe Area
- Greater Reno-Carson City-Minden Area
- Western Nevada Basin and Range including Pyramid Lake
Briefings
From the Forecaster
Thunderstorm Outlook Today
Created by the NWS Reno WFO
Thunderstorms will develop in Mono county today before progressing northward. Slower storm motions and heavy rain will result in flooding being the greatest threat today. Remember, never drive through flooded roadways!
Mountain Thunderstorm Chances
Created by the NWS Sacramento WFO
Tuesday, July 21, 2026, most likely from 12pm to 8pm
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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