Wintery Weather Stretching from the West Coast to the Great Lakes
Lake Effect Snow Warnings are in effect for the Great Lakes with 2 to 3 feet storm total snow possible. Arctic Air extends across much of the U.S. with breezy winds and temperatures 15-35 degrees below normal in the Northern Plains. Out west, heavy mountain snow and some low elevation snow and freezing rain forecast as a warmer weather system interacts with the Arctic airmass.
Hazardous Weather Conditions
High and low forecast temperature values represent air temperature.
Last Update: 8:15 am EST Dec 8, 2016
Forecast Valid: 10am EST Dec 8, 2016-6pm EST Dec 14, 2016
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF DECEMBER 8...
20 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 16 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 12 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 11 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 12 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 12 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 6 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. LESS THAN 1 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.
GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
- 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.