Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
159 FZUS52 KKEY 191021 AAA CWFKEY Coastal Waters Forecast for the Florida Keys...UPDATED National Weather Service Key West FL 621 AM EDT Sun May 19 2024 Updated first period winds in Hawk Channel and SE Gulf Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to south of Dry Tortugas, and the extreme southeastern Gulf of Mexico, 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. GMZ005-191630- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 621 AM EDT Sun May 19 2024 .SYNOPSIS...The western extent of a low-level ridge axis that extends west-northwest has begun to lose its grip across the Florida Keys, and breezes have shifted to the southeast to south. Breezes will quickly veer to the north and decrease today as a frontal boundary slides down the Florida peninsula. There may be a break in the rain-free conditions tonight through Tuesday, followed by variable breezes turning to the east Wednesday through Thursday. The Approximate Shoreward Edge of the Gulf Stream as of May 15, 2024... 49 NM South of Dry Tortugas Light...on Loggerhead Key. 32 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 24 NM South of Sand Key Light...off Key West. 27 NM South of Looe Key...off Big Pine Key. 29 NM South of Sombrero Key Light...off Marathon. 8 NM Southeast of Alligator Reef Light...off Islamorada. 3 NM Southeast of Molasses Reef Light...off Key Largo. Gulf Stream Information Courtesy of the National Weather Service in Key West. $$ GMZ031-191630- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 621 AM EDT Sun May 19 2024 .TODAY...Southeast to south winds near 10 knots, becoming southwest to west near 5 knots. Bay waters a light chop, becoming smooth. Isolated showers. .TONIGHT...Southwest to west winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .MONDAY...Southwest to west winds 5 to 10 knots, becoming west 10 to 15 knots. Bay waters smooth to a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...West to northwest winds near 10 knots, becoming northwest 5 to 10 knots. Bay waters a light chop, becoming smooth to a light chop. Scattered showers and isolated thunderstorms. .TUESDAY...Northwest to north winds near 5 knots, becoming variable. Bay waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming east. Bay waters smooth. Isolated showers and thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...East winds near 10 knots. Bay waters a light chop. Isolated showers and thunderstorms. $$ GMZ032-035-191630- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 621 AM EDT Sun May 19 2024 .TODAY...Southeast to south winds near 10 knots, becoming west to northwest 5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or less. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. .TONIGHT...West winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .MONDAY...West winds 5 to 10 knots, becoming west to northwest near 10 knots. Seas 1 foot or less, building to around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Northwest winds near 10 knots, becoming northwest to north 5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or less. Nearshore waters a light chop, becoming smooth to a light chop. Scattered showers and isolated thunderstorms. .TUESDAY...Northwest winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Northwest to north winds near 5 knots, becoming northeast to east. Seas 1 foot or less. Nearshore waters smooth. Isolated showers and thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to near 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers and thunderstorms. .THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .THURSDAY NIGHT...East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers and thunderstorms. $$ GMZ042>044-191630- 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- 621 AM EDT Sun May 19 2024 .TODAY...Southeast to south winds 10 to 15 knots, becoming west to northwest 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a light to moderate chop, becoming smooth to a light chop. Isolated showers. .TONIGHT...West to northwest winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. Scattered showers and isolated thunderstorms. .MONDAY...West winds 5 to 10 knots, becoming west to northwest 10 to 15 knots in the afternoon. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Northwest winds near 10 knots, becoming northwest to north near 5 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth. Scattered showers and isolated thunderstorms. .TUESDAY...Northwest to north winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming east. Seas 1 foot or less. Nearshore waters smooth. Isolated showers and thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less, building to around 1 foot. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers and thunderstorms. .THURSDAY...East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .THURSDAY NIGHT...East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers and thunderstorms. $$ GMZ052>055-072>075-191630- 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- 621 AM EDT Sun May 19 2024 .TODAY...South winds 10 to 15 knots, becoming northwest to north 5 to 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 2 feet at 5 seconds. Isolated showers. .TONIGHT...Variable winds near 5 knots, becoming south to southwest 5 to 10 knots. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 4 seconds. Scattered showers and isolated thunderstorms. .MONDAY...Southwest to west winds 5 to 10 knots, becoming northwest near 10 knots in the afternoon. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 4 seconds and northwest 1 foot at 3 seconds. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Northwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Scattered showers and isolated thunderstorms. .TUESDAY...Northwest to north winds near 5 knots, becoming variable. Seas around 1 foot. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming east. Seas around 1 foot. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds near 10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .THURSDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds near 10 knots. Seas around 2 feet. Isolated showers and thunderstorms. $$ GMZ033-034-191630- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 621 AM EDT Sun May 19 2024 .TODAY...South to southwest winds 5 to 10 knots, becoming west to northwest near 5 knots. Seas 1 to 2 feet. Wave Detail: Southwest 1 foot at 6 seconds and southeast 1 foot at 3 seconds. Isolated showers. .TONIGHT...West winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Southwest 1 foot at 5 seconds. Scattered showers and isolated thunderstorms. .MONDAY...West to northwest winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Wave Detail: West 1 foot at 5 seconds. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Northwest to north winds near 10 knots, becoming north near 5 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms. .TUESDAY...North winds near 5 knots, becoming northwest to north. Seas around 1 foot. Isolated showers and thunderstorms. .TUESDAY NIGHT...North winds near 5 knots, becoming northeast to east. Seas around 1 foot. Isolated showers and thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming east near 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .THURSDAY...East winds 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. $$