California Severe Flash Flood Warning | Effective 07/17/2026 18:44

Headline: 
Flash Flood Warning issued July 17 at 6:44PM PDT until July 17 at 9:45PM PDT by NWS Las Vegas NV
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 17, 2026 - 6:44pm
Expires: 
July 17, 2026 - 9:45pm
Description: 
FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 945 PM PDT. * At 644 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 1.5 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Needles. This includes Interstate 40 in California between mile markers 138 and 155.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. 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.
Area Description: 
San Bernardino, CA
Forcast Office: 
NWS Las Vegas NV