Flood Warning — San Bernardino County, California
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Current Status
🌊 Active: Flood Warning
Flood Warning issued August 11 at 6:26PM PDT until August 11 at 9:30PM PDT by NWS Las Vegas NV
* WHAT...Flooding caused by excessive rainfall will continue this evening. * WHERE...San Bernardino County in southern California... * WHEN...Until 930 PM PDT. * IMPACTS...Low-water crossings are inundated with water and may not be passable. Expect many areas of slow moving or standing water. * ADDITIONAL DETAILS... - At 625 PM PDT, Public reported flooding due to heavy rain along I-15 near Fort Irwin Road in Barstow. Flooding is already occurring. Between 1.5 and 2.5 inches of rain have fallen. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Daggett and Nebo Center. - This includes the following highways... Interstate 15 in California between mile markers 81 and 89. Interstate 40 in California between mile markers 2 and 11. - http://www.weather.gov/safety/flood
Effective August 11, 2026 at 9:26 PM ET · Expires August 12, 2026 at 12:30 AM ET
Event Details
Event Type
Flood Warning
Severity
severe
Issued By
NWS Las Vegas NV
Expires
August 12, 2026 at 12:30 AM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
Other Active Alerts in California
Flash Flood Warning
Severe Thunderstorm Warning
Flash Flood Warning
Flood Advisory
Flood Advisory
Flood Advisory
Get Flood Warning Alerts for San Bernardino County
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Frequently Asked Questions
What does a Flood Warning mean for San Bernardino County, California?
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Is this Flood Warning currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 12, 2026 at 12:30 AM ET.
How do I get notified about Flood 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.