Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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Hazardous Weather Conditions

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Key West, FL Local Forecast Office

8NM SW Florida Bay FL

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Sunny

    NNW 15kt
    < 1ft

    High: 72 °F

  • Tonight

    Mostly Clear

    N 20kt
    < 1ft

    Low: 65 °F

  • Sunday

    Sunny

    ENE 20kt
    < 1ft

    High: 71 °F

  • Sunday
    Night

    Partly Cloudy

    E 20kt
    < 1ft

    Low: 69 °F

  • Washington's
    Birthday

    Isolated Showers

    E 20kt
    < 1ft

    High: 74 °F

  • Monday
    Night

    Scattered Showers

    SE 15kt
    < 1ft

    Low: 72 °F

  • Tuesday

    Scattered Showers

    WSW 10kt
    < 1ft

    High: 75 °F

  • Tuesday
    Night

    Isolated Showers

    N 10kt
    < 1ft

    Low: 69 °F

  • Wednesday

    Mostly Sunny

    NNE 10kt
    < 1ft

    High: 75 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:15 pm EST Feb 13, 2016
Forecast Valid: 1pm EST Feb 13, 2016-6pm EST Feb 19, 2016

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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.

Synopsis: HIGH PRESSURE CURRENTLY ACROSS THE NORTHERN PLAINS WILL SPILL EAST INTO THE MID ATLANTIC STATES SUNDAY AFTERNOON...AND INTO THE WESTERN NORTH ATLANTIC MONDAY NIGHT. FRESH BREEZES ARE EXPECTED ACROSS ALL COASTAL WATERS OF THE FLORIDA KEYS TONIGHT THROUGH MONDAY NIGHT. A WEAK COLD FRONT SHOULD APPROACH THE FLORIDA KEYS TUESDAY OR TUESDAY NIGHT.

THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF FEBRUARY ELEVENTH...

52 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 11 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 4 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 3 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 2 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. LESS THAN 1 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 2 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 6 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

This Afternoon
NNW wind 10 to 15 kt. Sunny. Seas 1 ft or less.
Tonight
NW wind 15 to 20 kt becoming NNE after midnight. Mostly clear. Seas 1 ft or less.
Sunday
ENE wind 15 to 20 kt. Sunny. Seas 1 ft or less.
Sunday Night
E wind around 20 kt. Partly cloudy. Seas 1 ft or less.
Washington's Birthday
E wind 15 to 20 kt. Isolated showers. Seas 1 ft or less.
Monday Night
SE wind 10 to 15 kt. Scattered showers. Seas 1 ft or less.
Tuesday
SE wind 5 to 10 kt becoming W in the afternoon. Scattered showers. Seas 1 ft or less.
Tuesday Night
WNW wind 5 to 10 kt becoming N after midnight. Isolated showers. Seas 1 ft or less.
Wednesday
NNE wind around 10 kt becoming NW in the afternoon. Mostly sunny. Seas 1 ft or less.

*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.
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ABOUT THIS FORECAST

Point Forecast: 24.93°N 80.87°W
Last Update: 12:15 pm EST Feb 13, 2016
Forecast Valid: 1pm EST Feb 13, 2016-6pm EST Feb 19, 2016
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