Severe Thunderstorms and Heavy Rain Across the Central US; Wintry Mix in the Northern Plains and Northeast

Severe thunderstorms and flash flooding are possible across the central U.S. through Saturday. Large hail, damaging winds, and tornadoes are all possible. There is an increased threat for wildfire development in the southern to central High Plains. A wintry mix of snow, sleet and freezing rain are forecast across portions of the northern Plains and central New England into early Friday morning. Read More >

Hazardous Weather Conditions

Small Craft Advisory until March 8, 06:00 PM EDT

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Friday
High: 81 °F
E 17kt
5-6ft

Small Craft Advisory
Friday Night
Low: 77 °F
E 13kt
5ft

Small Craft Advisory
Saturday
High: 81 °F
E 16kt
6ft

Small Craft Advisory
Saturday Night
Low: 77 °F
E 12kt
5-6ft

Small Craft Advisory
Sunday
High: 81 °F
E 16kt
5ft

Small Craft Advisory
Sunday Night
Low: 77 °F
E 11kt
5ft
Monday
High: 81 °F
E 16kt
5ft
Monday Night
Low: 77 °F
E 12kt
5ft
Tuesday
High: 81 °F
E 15kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:55 pm EST Mar 5, 2026
Forecast Valid: 1am EST Mar 6, 2026-6pm EDT Mar 12, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

Friday

E wind 12 to 17 kt, with gusts as high as 24 kt. Showers likely, mainly before 8am. Seas 5 to 6 ft.

Friday Night

E wind 11 to 13 kt. Scattered showers before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then scattered showers after 2am. Seas around 5 ft.

Saturday

E wind 14 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly before 11am. Seas around 6 ft.

Saturday Night

E wind around 12 kt. Scattered showers. Seas 5 to 6 ft.

Sunday

E wind 13 to 16 kt. Showers likely, mainly before 11am. Seas around 5 ft.

Sunday Night

E wind around 11 kt. Scattered showers. Seas around 5 ft.

Monday

E wind 12 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly before 11am. Seas around 5 ft.

Monday Night

E wind 10 to 12 kt. Showers likely. Seas around 5 ft.

Tuesday

E wind 11 to 15 kt. Scattered showers. Seas around 5 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.