California Severe Flash Flood Warning | Effective 09-24-2026 16:32

Headline: 
Flash Flood Warning issued September 24 at 4:32PM PDT until September 24 at 7:30PM PDT by NWS San Diego CA
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
September 24, 2026 - 4:32pm
Expires: 
September 24, 2026 - 7:30pm
Description: 
FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... Riverside County in southern California... San Bernardino County in southern California... * Until 730 PM PDT. * At 432 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.75 and 1.5 inches of rain have fallen. Additional rainfall amounts of 0.5 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... Yucaipa, Forest Falls, western Mount San Gorgonio, Banning, Mountain Home Village, Hwy 38 Between Yucaipa And Onyx Summit and Mentone.
Instruction: 
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.
SNM: AVISO DE INUNDACIONES REPENTINAS hasta 7:30 PM PDT. Evite areas inundadas.
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 7:30 PM PDT. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Area Description: 
Riverside, CA; San Bernardino, CA
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov