GMZ005-010830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
425 PM EDT Tue Jun 30 2026
.SYNOPSIS...A frontal boundary will stall across central Florida
through Wednesday. This will keep winds light and variable during
the day with brief nocturnal surges off the mainland in the
evening and early portions of the overnight. Conditions will
remain favorable for a cloud line to develop over, or across the
waters adjacent to the Florida Keys on Wednesday. This may
support the development of waterspouts. High pressure gradually
builds back across the area Thursday with peaks and lulls
resuming.
The Approximate Shoreward Edge of the Gulf Stream as of
June 28, 2026...
33 NM South of Dry Tortugas Light...on Loggerhead Key.
8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
7 NM South of Sand Key Light...off Key West.
11 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
7 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
1 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ033-034-010830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 425 PM EDT Tue Jun 30 2026 TONIGHT Northwest winds 5 to 10 knots, becoming north to northeast 10 to 15 knots in the evening, becoming southeast 5 to 10 knots late. Seas 1 to 2 feet. Wave Detail: Northwest to north 1 foot at 3 seconds. Winds and seas higher in and around a chance of showers with a slight chance of thunderstorms. WEDNESDAY Southeast to south winds near 5 knots, becoming northwest to north in the afternoon. Seas 1 to 2 feet. Wave Detail: North to northeast 1 foot at 4 seconds. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas around 1 foot. Wave Detail: Northeast 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY Southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. FRIDAY NIGHT East winds 5 to 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. SATURDAY East to southeast winds near 5 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. A chance of showers and thunderstorms. SUNDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Southeast winds near 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. $$
GMZ033-034-010830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 425 PM EDT Tue Jun 30 2026 TONIGHT Northwest winds 5 to 10 knots, becoming north to northeast 10 to 15 knots in the evening, becoming southeast 5 to 10 knots late. Seas 1 to 2 feet. Wave Detail: Northwest to north 1 foot at 3 seconds. Winds and seas higher in and around a chance of showers with a slight chance of thunderstorms. WEDNESDAY Southeast to south winds near 5 knots, becoming northwest to north in the afternoon. Seas 1 to 2 feet. Wave Detail: North to northeast 1 foot at 4 seconds. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas around 1 foot. Wave Detail: Northeast 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY Southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. FRIDAY NIGHT East winds 5 to 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. SATURDAY East to southeast winds near 5 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. A chance of showers and thunderstorms. SUNDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Southeast winds near 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. $$