Tropical Moisture Producing Heavy Rain in Portions of the Western U.S., Southeast Florida, and Puerto Rico and the U.S. Virgin Islands

Heavy rain and flash flooding will continue across portions of California, the Southwest, and parts of the Southern Rockies. Strong to locally severe thunderstorms and heavy rain will impact portions of the Plains and Mississippi Valley. Tropical moisture is causing heavy rainfall in southeast Florida, Puerto Rico and the Virgin Islands, Read More >

Hazardous Weather Conditions

Last Update: 330 PM AST Thu Sep 18 2025

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San Juan, PR Local Forecast Office

8NM SSE Ponce PR

Marine Zone Forecast


Tonight
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 2 feet at 8 seconds and southeast 1 foot at 4 seconds. Isolated thunderstorms. Scattered showers this evening, then numerous showers after midnight.
Friday
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 2 feet at 8 seconds and southeast 1 foot at 5 seconds. Scattered showers in the morning.
Friday Night
East winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas around 2 feet. Wave detail: east 2 feet at 8 seconds and southeast 1 foot at 5 seconds. Scattered showers after midnight.
Saturday
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 1 foot at 5 seconds and east 1 foot at 8 seconds.
Saturday Night
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 1 foot at 5 seconds.
Sunday
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 1 foot at 4 seconds and east 1 foot at 10 seconds.
Sunday Night
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers.
Monday
East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet.
Monday Night
East winds 10 to 15 knots. Seas 2 to 3 feet.
Tuesday
East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers in the morning.
Tuesday Night
East winds 10 to 15 knots. Seas 3 to 4 feet.

winds and seas higher in and near thunderstorms.




Winds and seas higher in and near thunderstorms.
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330 PM AST Thu Sep 18 2025
 
 

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