California Severe Flash Flood Warning | Effective 08/11/2026 14:54

Headline: 
Flash Flood Warning issued August 11 at 2:54PM PDT until August 11 at 4:00PM PDT by NWS San Diego CA
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
August 11, 2026 - 2:54pm
Expires: 
August 11, 2026 - 4:00pm
Description: 
FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... A Small Portion of Northeastern San Diego County in southwestern California... * Until 400 PM PDT. * At 254 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 1 to 2 inches in 1 hour. 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... Warner Springs, Hwy 79 Between Santa Ysabel And Warner Springs, Hwy S2 Between Hwy 79 And Hwy 78, Ranchita, Hwy 79 Between Warner Springs And Oak Grove, Los Coyotes Indian Reservation and Santa Ysabel Indian Reservation.
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.
Area Description: 
San Diego, CA
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov