National Weather Service United States Department of Commerce

Powerful snowstorm, including blizzard conditions, forecast in parts of the Northeast Monday into Tuesday

The clipper system bringing snow to the Ohio Valley and mid-Atlantic Sunday and Monday will transition to a strong nor'easter Monday into Tuesday. Heavy snow and strong wind, even blizzard conditions, are possible in parts of the northern mid-Atlantic and New England. A Blizzard Watch is in effect from coastal New Jersey to Massachusetts. Winter Storm Watches stretch from Delaware to Maine.
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Hazardous Weather Conditions

4NM N Dry Tortugas Light FL

Marine Point Forecast [NOTICE]

This
Afternoon

Sunny

Light Wind
4-5ft

High: 67 °F

Tonight

Mostly Clear

Winds IncreasingW 20kt
3-4ft

Low: 65 °F

Monday

Isolated Showers

WNW 25kt
Waves Building8ft

High: 69 °F

Monday
Night

Partly Cloudy

NW 25kt
7-8ft

Low: 65 °F

Tuesday

Sunny

NNW 15kt
5-6ft

High: 69 °F

Tuesday
Night

Mostly Clear

NW 15kt
5ft

Low: 63 °F

Wednesday

Sunny

NNE 15kt
5ft

High: 69 °F

Wednesday
Night

Mostly Clear

NNE 15kt
4-5ft

Low: 62 °F

Thursday

Mostly Sunny

E 15kt
3-4ft

High: 67 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:15 pm EST Jan 25, 2015
Forecast Valid: 2pm EST Jan 25, 2015-6pm EST Jan 31, 2015

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Detailed Forecast

SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

  • SynopsisA RIDGE OF HIGH PRESSURE WILL STRETCH ACROSS THE COASTAL WATERS OF THE FLORIDA KEYS THIS AFTERNOON...CULMINATING IN LIGHT TO GENTLE BREEZES THIS EVENING. A REINFORCING COLD FRONT WILL APPROACH THE FLORIDA KEYS TONIGHT AND MONDAY...RESULTING IN FRESHENING WESTERLY BREEZES. A PERIOD OF STRONG WEST TO NORTHWEST BREEZES ARE LIKELY MONDAY AFTERNOON THROUGH MONDAY NIGHT IN THE WAKE OF THE FRONT. THEREAFTER...HIGH PRESSURE WILL BUILD INTO THE WESTERN NORTH ATLANTIC.

    THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF JANUARY 21...

    30 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 7 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 8 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 5 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. LESS THAN 1 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 1 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 1 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 1 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

    GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
  • This Afternoon Variable winds 5 kt or less. Sunny. Seas 4 to 5 ft.
  • Tonight W wind 5 to 10 kt increasing to 15 to 20 kt after midnight. Mostly clear. Seas 3 to 4 ft.
  • Monday W wind 20 to 25 kt becoming NW in the afternoon. Isolated showers. Seas 4 ft building to 8 ft.
  • Monday Night NW wind 20 to 25 kt. Partly cloudy. Seas 7 to 8 ft.
  • Tuesday NNW wind 10 to 15 kt. Sunny. Seas 5 to 6 ft.
  • Tuesday Night NW wind around 15 kt. Mostly clear. Seas around 5 ft.
  • Wednesday NNE wind around 15 kt. Sunny. Seas around 5 ft.
  • Wednesday Night NNE wind 10 to 15 kt becoming ENE after midnight. Mostly clear. Seas 4 to 5 ft.
  • Thursday E wind 10 to 15 kt. Mostly sunny. Seas 3 to 4 ft.
*Notices:
  1. 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.
  2. 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.