Station List

National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 261521
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1021 AM EST Thu Feb 26 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.

GMZ005-270330
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1021 AM EST Thu Feb 26 2026

SYNOPSIS

A broad Atlantic ridge will shift eastward over the next few days. Through this period, resulting gentle to moderate east to southeasterly breezes will slacken. However, impacts from nearby land breezes and cooler waters north of the island chain will make conditions more chaotic. Over the weekend, a high pressure system is primed to build over the southeastern States. Breezes will slacken to light to gentle amidst an increase in shower coverage. A reinforcing high is forecast to sweep into the eastern US in the latter half of the weekend, and may prompt rapidly freshening breezes early next week.

The Approximate Shoreward Edge of the Gulf Stream as of February 26...

14 NM South of Dry Tortugas Light...on Loggerhead Key. 4 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 2 NM South of Sand Key Light...off Key West. 9 NM South of Looe Key...off Big Pine Key. 14 NM Southeast of Sombrero Key Light...off Marathon. 12 NM Southeast of Alligator Reef Light...off Islamorada. 5 NM Southeast of Molasses Reef Light...off Key Largo. 3 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.

GMZ031-270330
Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound
1021 AM EST Thu Feb 26 2026

THIS AFTERNOON
East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop.

TONIGHT
East winds 5 to 10 knots. Bay waters smooth to a light chop.

FRIDAY AND FRIDAY NIGHT
East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.

SATURDAY
East to southeast winds near 5 knots. Bay waters smooth. Isolated showers.

SATURDAY NIGHT
Northeast to east winds near 5 knots. Bay waters smooth. Isolated showers.

SUNDAY
Northeast to east winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.

SUNDAY NIGHT AND MONDAY
Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop. Isolated showers.

MONDAY NIGHT
Northeast to east winds near 15 knots. Bay waters a moderate chop. Isolated showers.

GMZ032-035-270330
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
1021 AM EST Thu Feb 26 2026

THIS AFTERNOON
East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop.

TONIGHT
East to southeast winds decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters becoming a smooth to a light chop. Isolated showers.

FRIDAY
East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop.

FRIDAY NIGHT
East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.

SATURDAY
East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers.

SATURDAY NIGHT
Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.

SUNDAY
Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers.

SUNDAY NIGHT
Northeast to east winds increasing to 10 to 15 knots. Seas building to 1 to 2 foot. Nearshore waters becoming a light to moderate chop.

MONDAY
Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop.

MONDAY NIGHT
Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers.

GMZ042>044-270330
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
1021 AM EST Thu Feb 26 2026

THIS AFTERNOON
Southeast winds 10 to 15 knots, becoming east to southeast near 10 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop, becoming a light chop.

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

FRIDAY
East winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers.

FRIDAY NIGHT
East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers.

SATURDAY
East winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. Isolated showers.

SATURDAY NIGHT
Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers.

SUNDAY
Northeast to east winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers.

SUNDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Isolated showers.

MONDAY
Northeast to east winds 10 to 15 knots. Seas building to 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers.

MONDAY NIGHT
Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Isolated showers.

GMZ052>055-072>075-270330
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
1021 AM EST Thu Feb 26 2026

THIS AFTERNOON
East to southeast winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East to southeast 3 feet at 6 seconds.

TONIGHT
East winds 10 to 15 knots, becoming east to southeast near 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. Isolated showers.

FRIDAY
East winds near 10 knots. Seas subsiding to around 2 feet. Wave Detail: East 2 feet at 5 seconds.

FRIDAY NIGHT
East to southeast winds near 10 knots. Seas 1 to 2 feet. Isolated showers.

SATURDAY
East winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers.

SATURDAY NIGHT
Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers.

SUNDAY
Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet. Isolated showers.

SUNDAY NIGHT
Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers.

MONDAY
Northeast to east winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated showers.

MONDAY NIGHT
Northeast to east winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers.

GMZ033-034-270330
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
1021 AM EST Thu Feb 26 2026

THIS AFTERNOON
Southeast winds near 10 knots, becoming east to southeast 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and west to northwest 1 foot at 5 seconds.

TONIGHT
East to southeast winds increasing to near 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. Isolated showers.

FRIDAY
East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at 3 seconds and west to northwest 1 foot at 7 seconds.

FRIDAY NIGHT
East to southeast winds 5 to 10 knots. Seas subsiding to around 1 foot. Scattered showers.

SATURDAY
East winds 5 to 10 knots. Seas around 1 foot. Isolated showers.

SATURDAY NIGHT
Northeast winds 5 to 10 knots. Seas around 1 foot. Isolated showers.

SUNDAY
Northeast winds near 10 knots. Seas 1 to 2 feet.

SUNDAY NIGHT
Northeast winds near 10 knots, becoming northeast to east 10 to 15 knots. Seas 1 to 2 feet.

MONDAY
Northeast to east winds 10 to 15 knots. Seas 1 to 3 feet.

MONDAY NIGHT
Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas building to 2 to 3 feet. Isolated showers.