Widespread gale-force wind gusts occurred in association with thunderstorms, originating along the north Cuban land-breeze front, which grew upscale in response to passing under a cyclonic jet streak associated with a deep upper trough over the Gulf of Mexico.

Marine Thunderstorm Wind in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 21-AUG-20 00:43:00 to 21-AUG-20 00:43:00 (EST-5)
Location: KEY WEST
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

A wind gust of 41 knots was measured at an automated National Ocean Service sensor at the Florida Keys National Marine Sanctuary Nancy Foster Center.

Marine Thunderstorm Wind in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 21-AUG-20 00:43:00 to 21-AUG-20 00:43:00 (EST-5)
Location: KEY WEST
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 41 knots was measured at an automated WeatherFlow station at the U.S. Coast Guard Sector Key West.

Marine Thunderstorm Wind in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 21-AUG-20 00:45:00 to 21-AUG-20 00:45:00 (EST-5)
Location: BIG COPPITT KEY
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A wind gust of 38 knots was measured at the U.S. Naval Air Station Key West Boca Chica Field.

Marine Thunderstorm Wind in GULF OF MEXICO FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM OUT AND BEYOND 5 FATHOMS, GULF OF MEXICO
From 21-AUG-20 01:05:00 to 21-AUG-20 01:05:00 (EST-5)
Location: SMITH SHOAL LIGHT
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 42 knots was measured at an automated WeatherFlow station at Smith Shoal Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 21-AUG-20 01:13:00 to 21-AUG-20 01:13:00 (EST-5)
Location: SUMMERLAND KEY
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 37 knots was measured at an automated Citizen Weather Observing Station on Lower Sugarloaf Key.

Marine Thunderstorm Wind in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 21-AUG-20 01:13:00 to 21-AUG-20 01:13:00 (EST-5)
Location: SUMMERLAND KEY
Magnitude: 46.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 46 knots was measured at an automated Citizen Weather Observing Station located along the south end of Cudjoe Bay.

Marine Thunderstorm Wind in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 21-AUG-20 01:55:00 to 21-AUG-20 01:55:00 (EST-5)
Location: KEY WEST
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A wind gust of 47 knots was measured at Key West International Airport.

Marine Thunderstorm Wind in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 21-AUG-20 00:30:00 to 21-AUG-20 00:30:00 (EST-5)
Location: SAND KEY LIGHT
Magnitude: 48.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A wind gust of 48 knots was measured at the new Sand Key Light.