Major Winter Storm Ongoing in the Upper Midwest and Great Lakes; Severe Weather Along the East Coast

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through today across the Upper Midwest and Upper Great Lakes. Widespread severe storms are expected across the entire eastern U.S. with the highest threat over the interior Mid-Atlantic, where there is a risk for damaging wind gusts and a few tornadoes. Heat continues to build in the West. Read More >

Hazardous Weather Conditions

Small Craft Advisory until March 18, 06:00 PM EDT

For More Weather Information:

San Juan, PR Local Forecast Office

31NM ENE Charlotte Amalie VI

Marine Point Forecast

[NOTICE]

Tonight
Low: 79 °F
E 22kt
5ft

Small Craft Advisory
Tuesday
High: 80 °F
E 20kt
5ft

Small Craft Advisory
Tuesday Night
Low: 79 °F
E 19kt
5ft

Small Craft Advisory
Wednesday
High: 80 °F
E 17kt
4ft

Small Craft Advisory
Wednesday Night
Low: 79 °F
E 16kt
4ft
Thursday
High: 80 °F
E 16kt
3-4ft
Thursday Night
Low: 79 °F
ESE 14kt
3ft
Friday
High: 80 °F
SE 13kt
3ft
Friday Night
Low: 79 °F
SSE 11kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:08 pm EDT Mar 16, 2026
Forecast Valid: 8pm EDT Mar 16, 2026-6pm EDT Mar 23, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind around 22 kt, with gusts as high as 30 kt. Scattered showers, mainly after 3am. Seas around 5 ft.

Tuesday

E wind around 20 kt, with gusts as high as 27 kt. Isolated showers. Seas around 5 ft.

Tuesday Night

E wind around 19 kt, with gusts as high as 26 kt. Scattered showers, mainly before 9pm. Seas around 5 ft.

Wednesday

E wind 15 to 17 kt, with gusts as high as 23 kt. Isolated showers. Seas around 4 ft.

Wednesday Night

E wind 14 to 16 kt. Scattered showers. Seas around 4 ft.

Thursday

E wind 14 to 16 kt, with gusts as high as 22 kt. Isolated showers. Seas 3 to 4 ft.

Thursday Night

ESE wind around 14 kt. Scattered showers. Seas around 3 ft.

Friday

SE wind around 13 kt. Scattered showers. Seas around 3 ft.

Friday Night

SSE wind 9 to 11 kt. Scattered showers. Seas around 3 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.