GMZ005-210245-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 1031 AM EDT Sun Sep 20 2026
 
 
 .SYNOPSIS...
 Light to gentle mainly southerly breezes will be in place through
 the remainder of the weekend, though a period of variable breezes
 are expected late this afternoon and evening. In addition, a wet
 weather pattern will persist across the Florida Keys coastal
 waters into the new week as an upper- level low lingers in the
 eastern Gulf waters. As a result, scattered to numerous showers
 and thunderstorms will be a daily occurence with gusty winds,
 lightning strikes, blinding downpours, and locally hazardous seas
 the main hazards. Breezes will generally remain light to gentle
 into the new week but brief periods of moderate breezes may occur
 in the evening hours.
 
 The Approximate Shoreward Edge of the Gulf Stream as of September
 15, 2026...
 
 64 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
 40 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
 36 NM south-southeast of Sand Key Light, off Key West
 35 NM southeast of Looe Key, off Big Pine Key
 28 NM southeast of Sombrero Key Light, off Marathon
 15 NM east-southeast of Alligator Reef Light, off Islamorada
 8 NM east-southeast of Molasses Reef Light, off Key Largo
 5 NM east-southeast of Carysfort Reef Light, off Ocean Reef
 
 Gulf Stream Information Courtesy of the Naval Oceanographic Office.
 
 $$




 
 GMZ031-210245-
 Florida Bay including Barnes Sound, Blackwater Sound, and
 Buttonwood Sound-
 1031 AM EDT Sun Sep 20 2026
 

 THIS AFTERNOON
 Variable winds near 5 knots, becoming south to
 southwest late this morning and afternoon. Bay waters smooth. A
 chance of thunderstorms. Showers likely with a chance of
 thunderstorms.

 TONIGHT
 Southeast to south winds near 5 knots, becoming south
 and increasing to 5 to 10 knots. Bay waters smooth, becoming
 smooth to a light chop. A chance of showers and thunderstorms.

 MONDAY
 South to southwest winds 5 to 10 knots. Bay waters
 smooth to a light chop. Showers likely with a chance of
 thunderstorms.

 MONDAY NIGHT
 South winds 5 to 10 knots. Bay waters smooth to a
 light chop. Showers likely with a chance of thunderstorms.

 TUESDAY
 Southeast to south winds 5 to 10 knots. Bay waters
 smooth to a light chop. Showers likely with a chance of
 thunderstorms.

 TUESDAY NIGHT AND WEDNESDAY
 Southeast to south winds 5 to 10
 knots. Bay waters smooth to a light chop. Showers likely with a
 chance of thunderstorms.

 WEDNESDAY NIGHT
 Southeast to south winds near 5 knots. Bay
 waters smooth. A chance of showers and thunderstorms.

 THURSDAY
 Northeast winds near 5 knots, becoming south. Bay
 waters smooth. Showers likely with a chance of thunderstorms.

 THURSDAY NIGHT
 Southeast winds near 5 knots, becoming north.
 Bay waters smooth. A chance of showers and thunderstorms.
 
 $$