Wintry Mix Over Northern New England, Heavy Rainfall And Flash Flooding Threat Over The Desert Southwest

A wintry mix of snow, sleet, and freezing rain is expected over northern New England today. Hazardous travel conditions are likely to develop. Over the western U.S., the remnants of Tropical Storm Raymond will bring the potential for heavy rainfall and flash flooding over the Desert Southwest into Wednesday. Critical fire weather conditions will develop across northern California through mid-week.
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Hazardous Weather Conditions

Last Update: 433 AM EST Tue Nov 19 2019

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Key West, FL Local Forecast Office

7NM SE Molasses Reef Light FL

Marine Zone Forecast


Synopsis: High pressure centered in the Gulf of Mexico will slowly lift northeastward today, allowing a reinforcing cold front to sweep across the Keys waters this afternoon and evening. High pressure will then strengthen on Wednesday as it moves by to our north through the Southeast U.S.. High pressure will reach the western Atlantic on Thursday night, then stretch out into an east west ridge axis over the Florida Peninsula Thursday night through Friday night, before weakening this weekend.

The Approximate Shoreward Edge of the Gulf Stream as of November 19...

63 NM South of Dry Tortugas Light...on Loggerhead Key. 33 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 23 NM South of Sand Key Light...off Key West. 13 NM South of Looe Key...off Big Pine Key. 11 NM South of Sombrero Key Light...off Marathon. 3 NM Southeast of Alligator Reef Light...off Islamorada. 2 NM Southeast of Molasses Reef Light...off Key Largo. 3 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Today
Northwest winds 10 to 15 knots. Seas 2 to 4 feet, except around 5 feet off the upper keys. Isolated showers.
Tonight
Northwest winds 10 to 15 knots, becoming north near 15 knots. Seas 2 to 4 feet. Isolated showers.
Wednesday
North to northeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wednesday Night And Thursday
Northeast to east winds near 15 knots. Seas 3 to 5 feet.
Thursday Night
East winds 15 to 20 knots. Seas 3 to 6 feet. Isolated showers.
Friday
East winds near 15 knots. Seas 3 to 5 feet. Isolated showers.
Friday Night
East to southeast winds 10 to 15 knots. Seas 2 to 4 feet. Isolated showers.
Saturday
Southeast to south winds 5 to 10 knots. Seas 1 to 3 feet. Isolated showers.
Saturday Night
Southwest winds 5 to 10 knots. Seas 1 to 3 feet. Isolated showers.
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ABOUT THIS FORECAST

Last Update: 433 AM EST Tue Nov 19 2019
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