Heavy Rain and Thunderstorms in the Plains; Tropical Moisture Brings Heavy Rain to Southern California and Southwest

Heavy rain showers and thunderstorms, some severe, will persist across the Plains and Mississippi Valley through Friday. Increasing tropical moisture from the remnants of Mario will bring showers, thunderstorms, and a flash flooding threat across much of southern California into the Desert Southwest through Friday. Read More >

Hazardous Weather Conditions

Last Update: 412 PM AST Wed Sep 17 2025

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San Juan, PR Local Forecast Office

14NM SW Charlotte Amalie VI

Marine Zone Forecast


Tonight
East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave detail: east 4 feet at 8 seconds. Numerous showers with isolated thunderstorms.
Thursday
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 4 feet. Wave detail: southeast 4 feet at 8 seconds. Numerous showers.
Thursday Night
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. Scattered showers.
Friday
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. Scattered showers.
Friday Night
East winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas 2 to 3 feet. Wave detail: east 2 feet at 7 seconds and northeast 2 feet at 11 seconds. Scattered showers.
Saturday
East winds around 5 knots. Seas 2 to 4 feet. Wave detail: east 3 feet at 11 seconds and southeast 2 feet at 5 seconds. Scattered showers.
Saturday Night
East winds around 5 knots. Seas 2 to 4 feet.
Sunday
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the morning.
Sunday Night
East winds around 5 knots. Seas 2 to 3 feet. Scattered showers.
Monday
East winds 5 to 10 knots. Seas around 2 feet. Scattered showers in the morning.
Monday Night
East winds around 10 knots. Seas 2 to 3 feet.

winds and seas higher in and near thunderstorms.




Winds and seas higher in and near thunderstorms.
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412 PM AST Wed Sep 17 2025
 
 

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