Puerto Rico Minor Flood Advisory | Effective 09/19/2026 12:31

Headline: 
Flood Advisory issued September 19 at 3:31PM AST until September 19 at 6:30PM AST by NWS San Juan PR
Event: 
Flood Advisory
Urgency: 
Expected
Effective: 
September 19, 2026 - 12:31pm
Expires: 
September 19, 2026 - 3:30pm
Description: 
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Aguada County in Puerto Rico... Las Marias County in Puerto Rico... Moca County in Puerto Rico... San Sebastian County in Puerto Rico... * WHEN...Until 630 PM AST. * IMPACTS...Rises in small streams and normally dry arroyos. Some low-water crossings may become impassable. * ADDITIONAL DETAILS... - At 331 PM AST, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - http://www.weather.gov/safety/flood
Instruction: 
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. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.
Area Description: 
Aguada, PR; Las Marias, PR; Moca, PR; San Sebastian, PR
Forcast Office: 
NWS San Juan PR
Sender: 
w-nws.webmaster@noaa.gov