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GMZ005-201430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
419 AM EDT Tue Apr 20 2021
.SYNOPSIS...A frontal boundary stalled over South Florida and the
southeastern Gulf of Mexico will focus showers and thunderstorms
today. This weakening boundary will slide south tonight and
Wednesday. In the wake of the front, gentle to moderate northerly
breezes on Thursday will veer toward the northeast to east and
freshen by Thursday night. East to southeast breezes will return
Friday or Friday night.
The Approximate Shoreward Edge of the Gulf Stream as of
April 17...
54 NM South of Dry Tortugas Light...on Loggerhead Key.
37 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
21 NM South of Sand Key Light...off Key West.
3 NM South of Looe Key...off Big Pine Key.
4 NM South of Sombrero Key Light...off Marathon.
7 NM Southeast of Alligator Reef Light...off Islamorada.
8 NM Southeast of Molasses Reef Light...off Key Largo.
6 NM East of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ052>055-072>075-201430- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 419 AM EDT Tue Apr 20 2021 TODAY South to southwest winds near 15 knots, becoming variable near 10 knots. Seas 3 to 5 feet, subsiding to 1 to 2 feet in the afternoon. Isolated showers. TONIGHT South to southwest winds near 10 knots. Seas 1 to 3 feet. Isolated showers. WEDNESDAY Southwest winds near 10 knots, becoming west. Seas 1 to 3 feet. Isolated showers and thunderstorms. WEDNESDAY NIGHT West to northwest winds near 10 knots, becoming northwest to north. Seas 1 to 3 feet. Scattered showers and isolated thunderstorms, then isolated showers and thunderstorms late. THURSDAY Northeast winds near 10 knots. Seas 1 to 3 feet. Isolated showers. THURSDAY NIGHT Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 3 feet, building to 2 to 4 feet. Isolated showers. FRIDAY East winds 10 to 15 knots. Seas 3 to 4 feet. Isolated showers. FRIDAY NIGHT East to southeast winds 15 to 20 knots. Seas 4 to 5 feet. Isolated showers. SATURDAY East to southeast winds near 15 knots. Seas 3 to 5 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds 10 to 15 knots. Seas 2 to 4 feet. Isolated showers. $$
GMZ052>055-072>075-201430- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 419 AM EDT Tue Apr 20 2021 TODAY South to southwest winds near 15 knots, becoming variable near 10 knots. Seas 3 to 5 feet, subsiding to 1 to 2 feet in the afternoon. Isolated showers. TONIGHT South to southwest winds near 10 knots. Seas 1 to 3 feet. Isolated showers. WEDNESDAY Southwest winds near 10 knots, becoming west. Seas 1 to 3 feet. Isolated showers and thunderstorms. WEDNESDAY NIGHT West to northwest winds near 10 knots, becoming northwest to north. Seas 1 to 3 feet. Scattered showers and isolated thunderstorms, then isolated showers and thunderstorms late. THURSDAY Northeast winds near 10 knots. Seas 1 to 3 feet. Isolated showers. THURSDAY NIGHT Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 3 feet, building to 2 to 4 feet. Isolated showers. FRIDAY East winds 10 to 15 knots. Seas 3 to 4 feet. Isolated showers. FRIDAY NIGHT East to southeast winds 15 to 20 knots. Seas 4 to 5 feet. Isolated showers. SATURDAY East to southeast winds near 15 knots. Seas 3 to 5 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds 10 to 15 knots. Seas 2 to 4 feet. Isolated showers. $$