Unsettled Weather Continues in the Northwest; Ice & Snow to Develop Across Parts of the Central U.S.

Unsettled weather will persist across the western U.S. during the next few days with locally heavy coastal rain and mountain snow for much of the Pacific Northwest. Another weather system will affect parts of the Southwest and central United States with snow and mixed precipitation developing from Oklahoma northeastward into the Great Lakes.
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Last Update: 313 PM EST Tue Jan 21 2020

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Miami - South Florida Local Forecast Office

10NM E Virginia Key FL

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING...

Synopsis: robust gusty northerly winds will continue to produce hazardous marine conditions over all the local waters through Wednesday. Meanwhile, a surface low pressure developing over the open Atlantic waters to the north of the Bahamas is forecast to create swell that will allow elevated seas to remain in the Atlantic through the rest of the week.

.GULF STREAM HAZARDS...Hazardous winds and seas will build through Wednesday, with elevated seas remaining through much of the week.

The approximate location of the west wall of the Gulf Stream as of Jan 20, 2020 at 1200 UTC...

5 nautical miles southeast of Fowey Rocks. 7 nautical miles east northeast of Port Everglades. 5 nautical miles east northeast of Lake Worth. 10 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Tonight
North northwest winds 20 to 25 knots with gusts to around 35 knots. Seas 4 to 6 feet with occasional seas to 8 feet along the coast and 8 to 10 feet with occasional to 13 feet in the gulf stream. Period 8 seconds. Intracoastal waters a moderate chop.
Wednesday
Northwest winds 15 to 20 knots with gusts to around 30 knots along the coast to north northwest 15 to 25 knots with gusts to around 35 knots in the gulf stream. Along the coast, seas 4 to 6 feet with occasional seas to 8 feet building to 6 to 8 feet with occasional seas to 10 feet in the afternoon. In the gulf stream, seas 9 to 11 feet with occasional seas to 14 feet building to 11 to 13 feet with occasional seas to 17 feet in the afternoon. Period 9 seconds. North northeast swell 3 to 6 feet. Intracoastal waters a moderate chop. Slight chance of showers in the afternoon.
Wednesday Night
North northeast winds 10 to 15 knots with gusts to around 25 knots along the coast to north northeast 15 to 20 knots with gusts to around 30 knots in the gulf stream. Seas 7 to 9 feet with occasional seas to 11 feet along the coast and 12 to 14 feet with occasional to 18 feet in the gulf stream. Period 11 seconds. North swell 5 feet after midnight. Intracoastal waters choppy in exposed areas. Chance of showers in the evening, then slight chance of showers after midnight.
Thursday
East northeast winds 10 to 15 knots along the coast to east northeast 10 to 20 knots in the gulf stream. Along the coast, seas 7 to 9 feet with occasional seas to 11 feet. In the gulf stream, seas 9 to 11 feet with occasional seas to 14 feet subsiding to 6 to 8 feet with occasional seas to 10 feet in the afternoon. Period 11 seconds. North northeast swell 3 to 7 feet becoming 5 feet in the afternoon. Intracoastal waters choppy in exposed areas. Slight chance of showers.
Thursday Night
East winds 5 to 15 knots. Seas 5 to 7 feet with occasional seas to 9 feet subsiding to 3 to 5 feet with occasional seas to 6 feet after midnight. North northeast swell 4 feet increasing to around 3 feet after midnight. Intracoastal waters a moderate chop. Slight chance of showers.
Friday
South southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a light chop. Slight chance of showers.
Friday Night
West southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Slight chance of showers.
Saturday
West winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Slight chance of showers.
Saturday Night
North northwest winds 5 to 15 knots with gusts to around 20 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Slight chance of showers.
Sunday
North winds 10 to 15 knots. Seas around 2 feet along the coast and 2 to 4 feet with occasional to 5 feet in the gulf stream. Intracoastal waters a light chop.
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ABOUT THIS FORECAST

Last Update: 313 PM EST Tue Jan 21 2020
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