National Weather Service United States Department of Commerce

Developing storm will spread rain across eastern U.S.; thunderstorms in the Southeast

A storm system developing in the South will move up the Mississippi River Valley on Sunday bringing rainfall to much of the eastern U.S., along with thunderstorms in the southeastern states. Some of the thunderstorms in the Southeast could produce large hail, damaging wind and heavy rain.
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5NM N Dry Tortugas Light FL

Marine Point Forecast [NOTICE]

Overnight

Scattered Showers

ESE 20kt
4ft

Low: 75 °F

Small Craft Advisory
Small Craft Advisory

Sunday

Isolated Showers

SE 15kt
3-4ft

High: 79 °F

Sunday
Night

Isolated Showers

SE 10kt
2ft

Low: 76 °F

Monday

Isolated Showers

S 10kt
2ft

High: 79 °F

Monday
Night

Scattered Showers

ESE 10kt
2ft

Low: 77 °F

Tuesday

Scattered Showers

ENE 10kt
2ft

High: 79 °F

Tuesday
Night

Scattered Showers

E 15kt
2-3ft

Low: 73 °F

Wednesday

Scattered Showers

NNW 25kt
Waves Building10ft

High: 73 °F

Wednesday
Night

Isolated Showers

N 25kt
8-9ft

Low: 64 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:15 am EST Nov 23, 2014
Forecast Valid: 1am EST Nov 23, 2014-6pm EST Nov 29, 2014

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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.

  • SynopsisFRESH TO OCCASIONALLY STRONG EAST BREEZES WILL BLOW ACROSS FLORIDA KEYS COASTAL WATERS TONIGHT...BETWEEN AN EXPANSIVE HIGH PRESSURE SYSTEM CENTERED OVER THE EASTERN COAST OF THE UNITED STATES AND A DISSIPATING WARM FRONT OVER SOUTHERN FLORIDA. THE HIGH PRESSURE SYSTEM WILL MOVE EASTWARD...REACHING THE WESTERN NORTH ATLANTIC ON SUNDAY. BREEZES WILL SLACKEN SUNDAY THROUGH TUESDAY. A COLD FRONT WILL APPROACH THE FLORIDA KEYS TUESDAY NIGHT AND MAY PASS THROUGH THE FLORIDA KEYS AND ADJACENT COASTAL WATERS ON WEDNESDAY.

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

    67 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 33 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 17 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 8 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 6 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. LESS THAN 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.
  • Overnight ESE wind around 20 kt. Scattered showers. Seas around 4 ft.
  • Sunday SE wind around 15 kt. Isolated showers. Seas 3 to 4 ft.
  • Sunday Night SE wind around 10 kt. Isolated showers. Seas around 2 ft.
  • Monday S wind 5 to 10 kt. Isolated showers. Seas around 2 ft.
  • Monday Night ESE wind 5 to 10 kt. Scattered showers. Seas around 2 ft.
  • Tuesday ENE wind around 10 kt. Scattered showers. Seas around 2 ft.
  • Tuesday Night E wind 10 to 15 kt. Scattered showers and thunderstorms. Seas 2 to 3 ft.
  • Wednesday NNW wind 20 to 25 kt. Scattered showers and thunderstorms. Seas 4 ft building to 10 ft.
  • Wednesday Night N wind 20 to 25 kt, with gusts as high as 30 kt. Isolated showers. Seas 8 to 9 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.