Severe Thunderstorm Warning — San Bernardino County, California
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued August 11 at 5:42PM PDT until August 11 at 6:30PM PDT by NWS Las Vegas NV
SVRVEF The National Weather Service in Las Vegas has issued a * Severe Thunderstorm Warning for... San Bernardino County in southern California... * Until 630 PM PDT. * At 542 PM PDT, a severe thunderstorm was located 6 miles southwest of Mountain Pass, or 14 miles northwest of Cima, moving north at 10 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Mountain Pass. This includes Interstate 15 in California between mile markers 161 and 174.
Effective August 11, 2026 at 8:42 PM ET · Expires August 11, 2026 at 9:30 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Las Vegas NV
Expires
August 11, 2026 at 9:30 PM ET
Last Checked
just now
What To Do
📋 Official NWS Guidance
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Las Vegas NV.
Other Active Alerts in California
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Flash Flood Warning
Flash Flood Warning
Flood Advisory
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Get Severe Thunderstorm Warning Alerts for San Bernardino County
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Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for San Bernardino County, California?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (just now). It's set to expire August 11, 2026 at 9:30 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for San Bernardino County?
Download StormCast free on Google Play and set San Bernardino County, California as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.