Puerto Rico Severe Flash Flood Warning | Effective 10/04/2026 11:11

Headline: 
Flash Flood Warning issued October 4 at 2:11PM AST until October 4 at 3:45PM AST by NWS San Juan PR
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
October 4, 2026 - 11:11am
Expires: 
October 4, 2026 - 12:45pm
Description: 
FFWSJU The National Weather Service in San Juan has issued a * Flash Flood Warning for... Canovanas...Carolina and Loiza... * Until 345 PM AST. * At 211 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
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. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Area Description: 
Canovanas, PR; Carolina, PR; Loiza, PR
Forcast Office: 
NWS San Juan PR
Sender: 
w-nws.webmaster@noaa.gov