River Flooding Continues to be a Concern for Multiple Regions across the Country

Recent rainfall has increased the threat of Moderate to Major flooding along rivers in the Mid-Atlantic, especially Virginia and Maryland, over the next few days. Rainfall combined with snowmelt is also fueling Moderate-to-Major flooding in the northern Rockies and northern Intermountain West.
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Last Update: 1038 PM EDT Sun May 20 2018

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Key West, FL Local Forecast Office

3NM N American Shoal Light FL

Marine Zone Forecast


...SMALL CRAFT SHOULD EXERCISE CAUTION...
...A SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED MONDAY...
Synopsis: A pressure trough will progress northwestward through the northeastern Gulf of Mexico tonight through Tuesday. An Atlantic pressure ridge will build across the Southeastern United States Tuesday night. This ridge will shift southward down the Florida peninsula Wednesday, before retreating eastward Wednesday night.

The Approximate Shoreward Edge of the Gulf Stream current, as of May 19th, 2018.

29 NM South of Dry Tortugas Light, on Loggerhead Key. 9 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 8 NM South of Sand Key Light, off Key West. 12 NM South of Looe Key, off Big Pine Key. 14 NM South of Sombrero Key Light, off Marathon. 15 NM Southeast of Alligator Reef Light, off Islamorada. 11 NM Southeast of Molasses Reef Light, off Key Largo. 7 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Overnight
East to southeast winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy. Numerous showers and isolated thunderstorms.
Monday And Monday Night
East to southeast winds near 20 knots. Seas 3 to 5 feet. Nearshore waters rough. Numerous showers and isolated thunderstorms.
Tuesday
East to southeast winds near 20 knots, decreasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, subsiding to 2 to 4 feet. Nearshore waters rough, becoming choppy. Numerous showers and isolated thunderstorms.
Tuesday Night
Southeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Numerous showers and isolated thunderstorms.
Wednesday
Southeast winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Numerous showers and isolated thunderstorms.
Wednesday Night
Southeast winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Numerous showers and isolated thunderstorms.
Thursday
East to southeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Numerous showers and isolated thunderstorms.
Thursday Night And Friday
East to southeast winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy. Numerous showers and isolated thunderstorms.
Friday Night
East to southeast winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy. Scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 1038 PM EDT Sun May 20 2018
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