Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Hazardous Weather Conditions

Small Craft Advisory until January 22, 12:00 AM CST

For More Weather Information:

Key West, FL Local Forecast Office

3NM N American Shoal Light FL

Marine Point Forecast

[NOTICE]

Tonight
Low: 69 °F
NE 20kt
3-4ft

Small Craft Advisory
Thursday
High: 77 °F
NE 15kt
2-3ft
Thursday Night
Low: 71 °F
ENE 10kt
2ft
Friday
High: 78 °F
ENE 10kt
1-2ft
Friday Night
Low: 72 °F
ENE 10kt
1ft
Saturday
High: 78 °F
E 10kt
1-2ft
Saturday Night
Low: 73 °F
E 10kt
2ft
Sunday
High: 79 °F
ESE 10kt
1-2ft
Sunday Night
Low: 71 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:15 pm CST Jan 21, 2026
Forecast Valid: 7pm CST Jan 21, 2026-6pm CST Jan 28, 2026

View Nearby Observations

Detailed Forecast

Tonight

NE wind 15 to 20 kt. Scattered showers. Seas 3 to 4 ft.

Thursday

NE wind 10 to 15 kt. Isolated showers. Seas 2 to 3 ft.

Thursday Night

ENE wind around 10 kt. Isolated showers. Seas around 2 ft.

Friday

ENE wind around 10 kt. Isolated showers. Seas 1 to 2 ft.

Friday Night

ENE wind around 10 kt. Mostly clear. Seas around 1 ft.

Saturday

E wind around 10 kt. Sunny. Seas 1 to 2 ft.

Saturday Night

E wind around 10 kt. Mostly clear. Seas around 2 ft.

Sunday

ESE wind around 10 kt. Sunny. Seas 1 to 2 ft.

Sunday Night

Variable winds 5 kt or less. Isolated showers. Seas around 1 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.