Major Winter Storm in the North-Central U.S.; Severe Weather from the Mid-South to Ohio Valley

A major winter storm will bring a swath of heavy snowfall, strong winds, blizzard conditions and freezing rain to the Northern Plains into the Great Lakes region. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-south to the Ohio Valley and the Southeast. Critical fire weather concerns shift to the southern Rockies and Plains. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from March 16, 06:00 AM EDT until March 18, 06:00 PM EDT

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 80 °F
E 16kt
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 16kt
5-6ft

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

Small Craft Advisory
Wednesday
High: 80 °F
E 15kt
5ft

Small Craft Advisory
Wednesday Night
Low: 79 °F
E 9kt
5ft
Thursday
High: 80 °F
E 13kt
4-5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:51 pm EDT Mar 15, 2026
Forecast Valid: 5pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026

View Nearby Observations

Detailed Forecast

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

Late Afternoon

E wind around 16 kt, with gusts as high as 22 kt. Isolated showers. 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. Scattered showers, mainly after 3am. Seas around 6 ft.

Tuesday

E wind 12 to 16 kt, with gusts as high as 22 kt. Scattered showers, mainly before noon. Seas 5 to 6 ft.

Tuesday Night

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

Wednesday

E wind 8 to 15 kt, with gusts as high as 21 kt. Scattered showers after noon. Seas around 5 ft.

Wednesday Night

E wind 7 to 9 kt. Scattered showers. Seas around 5 ft.

Thursday

E wind 7 to 13 kt. Scattered showers. Seas 4 to 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.