Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from March 15, 06:00 PM EDT until March 18, 02:00 AM 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 18kt
3ft
Sunday
High: 80 °F
E 21kt
3-4ft
Sunday Night
Low: 79 °F
E 22kt
5ft

Small Craft Advisory
Monday
High: 80 °F
E 22kt
5ft

Small Craft Advisory
Monday Night
Low: 79 °F
E 21kt
5ft

Small Craft Advisory
Tuesday
High: 80 °F
E 21kt
5ft

Small Craft Advisory
Tuesday Night
Low: 79 °F
E 20kt
5ft

Small Craft Advisory
Wednesday
High: 80 °F
E 18kt
4ft
Wednesday Night
Low: 79 °F
E 19kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:40 pm EDT Mar 14, 2026
Forecast Valid: 9pm EDT Mar 14, 2026-6pm EDT Mar 21, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind around 18 kt, with gusts as high as 24 kt. Scattered showers, mainly after midnight. Seas around 3 ft.

Sunday

E wind around 21 kt, with gusts as high as 28 kt. Scattered showers before noon, then isolated showers after 3pm. Seas 3 to 4 ft.

Sunday Night

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

Monday

E wind 19 to 22 kt, with gusts as high as 30 kt. Isolated showers. Seas around 5 ft.

Monday Night

E wind around 21 kt, with gusts as high as 28 kt. Isolated showers. Seas around 5 ft.

Tuesday

E wind 19 to 21 kt, with gusts as high as 28 kt. Isolated showers. Seas around 5 ft.

Tuesday Night

E wind around 20 kt, with gusts as high as 27 kt. Partly cloudy. Seas around 5 ft.

Wednesday

E wind around 18 kt, with gusts as high as 24 kt. Scattered showers. Seas around 4 ft.

Wednesday Night

E wind 17 to 19 kt, with gusts as high as 26 kt. Scattered showers. Seas around 4 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.