Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

San Juan, PR Local Forecast Office

15NM SSE Mayaguez PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
E 10kt
2ft
Wednesday
High: 83 °F
ESE 16kt
2ft
Wednesday Night
Low: 82 °F
E 12kt
2ft
Thursday
High: 83 °F
⇑ESE 18kt
2-3ft
Thursday Night
Low: 82 °F
ENE 9kt
2ft
Friday
High: 83 °F
E 18kt
2-3ft
Friday Night
Low: 82 °F
ENE 10kt
2-3ft
Saturday
High: 83 °F
⇑E 19kt
2-3ft
Saturday Night
Low: 82 °F
E 11kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:37 pm EST Dec 9, 2025
Forecast Valid: 8pm EST Dec 9, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast

Tonight

E wind 8 to 10 kt. Isolated showers after 11pm. Seas around 2 ft.

Wednesday

ESE wind 7 to 16 kt. Isolated showers before 8am, then isolated showers after 11am. Seas around 2 ft.

Wednesday Night

E wind 6 to 12 kt. Isolated showers. Seas around 2 ft.

Thursday

ESE wind 6 to 11 kt increasing to 13 to 18 kt in the morning. Isolated showers before 11am. Seas 2 to 3 ft.

Thursday Night

ENE wind 5 to 9 kt. Isolated showers. Seas around 2 ft.

Friday

E wind 9 to 18 kt. Isolated showers after 11am. Seas 2 to 3 ft.

Friday Night

ENE wind 5 to 10 kt. Partly cloudy. Seas 2 to 3 ft.

Saturday

E wind 6 to 11 kt increasing to 14 to 19 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Saturday Night

E wind 6 to 11 kt. Clear. 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.