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 16, 06:00 AM EDT until March 18, 02:00 AM EDT

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 80 °F
E 17kt
4ft
Tonight
Low: 79 °F
E 13kt
5ft
Monday
High: 80 °F
E 19kt
6ft

Small Craft Advisory
Monday Night
Low: 79 °F
E 12kt
6ft

Small Craft Advisory
Tuesday
High: 80 °F
E 17kt
5ft

Small Craft Advisory
Tuesday Night
Low: 79 °F
E 10kt
5ft

Small Craft Advisory
Wednesday
High: 80 °F
E 15kt
5ft
Wednesday Night
Low: 79 °F
E 9kt
5ft
Thursday
High: 80 °F
E 13kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:48 am EDT Mar 15, 2026
Forecast Valid: 6am EDT Mar 15, 2026-6pm EDT Mar 21, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE

Today

E wind 9 to 17 kt, with gusts as high as 23 kt. Scattered showers, mainly before 3pm. Seas around 4 ft.

Tonight

E wind 11 to 13 kt. Scattered showers, mainly between 9pm and midnight. Seas around 5 ft.

Monday

E wind 13 to 19 kt, with gusts as high as 25 kt. Scattered showers. Seas around 6 ft.

Monday Night

E wind 9 to 12 kt. Isolated showers. Seas around 6 ft.

Tuesday

E wind 11 to 17 kt, with gusts as high as 23 kt. Scattered showers, mainly before noon. Seas around 5 ft.

Tuesday Night

E wind around 10 kt. Scattered showers, mainly before midnight. Seas around 5 ft.

Wednesday

E wind 10 to 15 kt, with gusts as high as 21 kt. Scattered showers after noon. Seas around 5 ft.

Wednesday Night

E wind 6 to 9 kt. Scattered showers. Seas around 5 ft.

Thursday

E wind 8 to 13 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.