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Live/Severe Alerts/Record/Special Marine Warning

Warning

Special Marine Warning

Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N; Coastal Waters of Northern Puerto Rico out 10 NM

Ended Oct 20, 4:00 PM EDT

Waterspout possibleMoving northeast at 28 mph
25 MI
20 MI
Map of the Special Marine Warning over Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N, with the area it draws around the storm. Drawn on the national sheet; the scale is at its foot.
In force from
Oct 20, 3:01 PM EDT
Until
Oct 20, 4:00 PM EDT
Issued
Oct 20, 3:01 PM EDT
Office
San Juan, PR
Number
26 of its kind from this office this year
Severity
Severe
Storm motion
Moving northeast at 28 mph
Where
Atlantic waters

The National Weather Service in San Juan has issued a

* Special Marine Warning for... Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N... Coastal Waters of Northern Puerto Rico out 10 NM...

* Until 400 PM AST.

* At 301 PM AST, A severe thunderstorm capable of producing waterspouts is now reaching the Atlantic Waters of Puerto Rico from 10 NM to 19.5N and Coastal Waters of Northern Puerto Rico out 10 NM zones, moving north-northeast at 25 knots.

Hazard
Waterspouts.
Source
Radar indicated.
Impact
Waterspouts can easily overturn boats and create locally hazardous seas.

* Locations impacted include... Mainly open waters of Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N and Coastal Waters of Northern Puerto Rico out 10 NM.

What to do

Move to safe harbor until hazardous weather passes.

Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.

Read the platesWaterspout FB-EVT-012How to read a warning FB-STN-001

On the radarForecast gusts over itRadar

Also in force nearby

Every warning of October 20, 2026Every severe alert in force