Station List

National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 130927
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
427 AM EST Tue Jan 13 2026

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to south of Dry Tortugas, and the extreme southeastern Gulf of America, including The Florida Keys National Marine Sanctuary

Seas are given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height.

Wave Detail will include details about the period and direction of origin for the highest energy waves. Long-period swells coming from a different direction than the wind would be included in the Wave Detail.

GMZ005-132130
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 427 AM EST Tue Jan 13 2026

SYNOPSIS
A surface ridge stretching across the southeastern U.S. will weaken and slide southeastward through tonight. This will promote slackening breezes to light to gentle. Thereafter, a pre- frontal trough will slide across the region on Wednesday, briefly clocking winds around to the southeast initially, then southwest, and eventually west to northwest. This will be followed by a second, stronger cold front on Thursday with a round of strong to potentially near gale breezes. Small Craft Advisories are becoming increasingly likely later this week.

The Approximate Shoreward Edge of the Gulf Stream as of January 12...

19 NM South of Dry Tortugas Light...on Loggerhead Key. 13 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 15 NM South of Sand Key Light...off Key West. 17 NM South of Looe Key...off Big Pine Key. 17 NM Southeast of Sombrero Key Light...off Marathon. 15 NM Southeast of Alligator Reef Light...off Islamorada. 10 NM Southeast of Molasses Reef Light...off Key Largo. 5 NM Southeast of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in Key West based on products from NASA SPoRT and RTOFS.

GMZ031-132130
Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound
427 AM EST Tue Jan 13 2026

TODAY
Northeast to east winds 5 to 10 knots, becoming east. Bay waters smooth to a light chop. Scattered showers.

TONIGHT
East winds 5 to 10 knots, becoming southeast to south. Bay waters smooth to a light chop. Isolated showers.

WEDNESDAY
South to southwest winds 5 to 10 knots, becoming west 10 to 15 knots. Bay waters smooth to a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms.

WEDNESDAY NIGHT
West to northwest winds 10 to 15 knots, becoming west. Bay waters a light to moderate chop. Scattered showers and isolated thunderstorms.

THURSDAY
Southwest to west winds near 15 knots, becoming west to northwest near 25 knots in the afternoon. Bay waters a moderate chop, becoming extremely rough. Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
Northwest to north winds 20 to 25 knots, becoming north 15 to 20 knots. Bay waters very rough, becoming choppy.

FRIDAY
North winds 15 to 20 knots, becoming north to northeast 5 to 10 knots. Bay waters choppy, becoming smooth to a light chop.

FRIDAY NIGHT
Northeast winds 5 to 10 knots, becoming north to northeast near 10 knots. Bay waters smooth to a light chop, becoming a light chop.

SATURDAY
North winds near 10 knots. Bay waters a light chop.

SATURDAY NIGHT
Northwest to north winds 10 to 15 knots. Bay waters a light to moderate chop.

GMZ032-035-132130
Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge
Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms
427 AM EST Tue Jan 13 2026

TODAY
Northeast winds near 10 knots, becoming east 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers.

TONIGHT
East winds 5 to 10 knots, becoming variable near 5 knots. Seas 1 foot or less, except subsiding to 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming smooth. Isolated showers.

WEDNESDAY
Southwest to west winds 5 to 10 knots, becoming west to northwest near 10 knots. Seas 1 foot or less, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming a light chop. Scattered showers and isolated thunderstorms.

WEDNESDAY NIGHT
West to northwest winds 10 to 15 knots, becoming west near 15 knots. Seas 1 to 2 feet, except building to around 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms.

THURSDAY
West winds 15 to 20 knots, becoming northwest near 25 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet. West of the Marquesas Keys, seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet. Nearshore waters choppy, becoming extremely rough. Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
Northwest to north winds near 25 knots, becoming north near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. West of the Marquesas Keys, seas 7 to 9 feet, occasionally to 11 feet, subsiding to 6 to 7 feet, occasionally to 9 feet. Nearshore waters extremely rough, becoming rough.

FRIDAY
North to northeast winds near 20 knots, becoming north to northeast near 10 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet. West of the Marquesas Keys, seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 6 feet. Nearshore waters rough, becoming a light chop.

FRIDAY NIGHT
North to northeast winds near 10 knots. Seas 1 to 2 feet, except subsiding to 2 to 3 feet west of the Marquesas Keys Nearshore waters a light chop.

SATURDAY
North to northeast winds near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light chop.

SATURDAY NIGHT
Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop.

GMZ042>044-132130
Hawk Channel from Ocean Reef to Craig Key out to the reef
Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef
427 AM EST Tue Jan 13 2026

TODAY
Northeast to east winds near 10 knots, becoming east 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light chop, becoming smooth to a light chop. Scattered showers.

TONIGHT
East winds 5 to 10 knots, becoming variable. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers.

WEDNESDAY
Southwest to west winds 5 to 10 knots, becoming west to northwest 10 to 15 knots. Seas around 1 foot, except building to 1 to 2 feet west of Cosgrove Shoal Light. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms.

WEDNESDAY NIGHT
West to northwest winds 10 to 15 knots, becoming west near 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms.

THURSDAY
West winds 15 to 20 knots, becoming northwest near 25 knots. Seas around 2 feet, building to 2 to 4 feet, occasionally to 5 feet. West of Cosgrove Shoal Light, seas 3 to 4 feet, occasionally to 5 feet, building to 5 to 6 feet, occasionally to 8 feet. Nearshore waters choppy, becoming extremely rough. Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
Northwest to north winds near 25 knots, becoming north near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 6 to 8 feet, occasionally to 10 feet west of Cosgrove Shoal Light. Nearshore waters extremely rough, becoming rough. Isolated showers.

FRIDAY
North to northeast winds near 20 knots, decreasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of Cosgrove Shoal Light, seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 6 feet. Nearshore waters rough, becoming a light to moderate chop.

FRIDAY NIGHT
Northeast winds near 10 knots. Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore waters a light chop.

SATURDAY AND SATURDAY NIGHT
North winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop.

GMZ052>055-072>075-132130
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
427 AM EST Tue Jan 13 2026

TODAY
Northeast to east winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 6 seconds and northwest 2 feet at 7 seconds. Scattered showers.

TONIGHT
Northeast to east winds 5 to 10 knots, becoming southeast to south. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds and northwest 2 feet at 6 seconds. Isolated showers.

WEDNESDAY
South to southwest winds near 10 knots, becoming west to northwest 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Wave Detail: East to southeast 2 feet at 5 seconds and northwest 1 foot at 5 seconds. Scattered showers and isolated thunderstorms.

WEDNESDAY NIGHT
West to northwest winds 10 to 15 knots, becoming west 15 to 20 knots. Seas 2 to 3 feet, building to 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms.

THURSDAY
West winds near 20 knots, becoming northwest 25 to 30 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 8 feet, occasionally to 10 feet. Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
Northwest to north winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Isolated showers.

FRIDAY
North to northeast winds near 20 knots, becoming 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to 7 feet.

FRIDAY NIGHT
Northeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 4 feet, occasionally to 5 feet. Isolated showers.

SATURDAY
North to northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.

SATURDAY NIGHT
North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers.

GMZ033-034-132130
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
427 AM EST Tue Jan 13 2026

TODAY
Northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: Northwest to north 3 feet at 6 seconds. Isolated showers.

TONIGHT
North winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Northwest to north 2 feet at 6 seconds. Isolated showers.

WEDNESDAY
Northwest to north winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. Wave Detail: Northwest 2 feet at 4 seconds. Isolated showers and thunderstorms.

WEDNESDAY NIGHT
West to northwest winds 10 to 15 knots, becoming west 15 to 20 knots after midnight. Seas 2 to 3 feet, building to 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms.

THURSDAY
West to northwest winds 20 to 25 knots, becoming northwest near 25 knots. Seas 4 to 5 feet, occasionally to 6 feet, building to 6 to 8 feet, occasionally to 10 feet. Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
Northwest to north winds near 25 knots, becoming north near 20 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 8 feet, occasionally to 9 feet. Isolated showers.

FRIDAY
North to northeast winds near 20 knots, decreasing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to 7 feet.

FRIDAY NIGHT
North to northeast winds 10 to 15 knots, becoming northeast 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet.

SATURDAY
North to northeast winds near 10 knots. Seas around 2 feet.

SATURDAY NIGHT
Northwest to north winds 10 to 15 knots. Seas 2 to 3 feet.

MJV