A deepening low pressure area over north Florida and attendant cold front over the eastern Gulf of Mexico was accompanied by a pre-frontal trough and squall line. The squall line swept across the Florida Keys and adjacent coastal waters from west to east, accompanied by widespread gale-force wind gusts.

Marine Thunderstorm Wind in GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL, GULF OF MEXICO
From 31-JAN-20 18:45:00 to 31-JAN-20 18:45:00 (EST-5)
Location: DRY TORTUGAS LIGHT
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A wind gust of 39 knots was measured at Pulaski Shoal Light.

Marine Thunderstorm Wind in GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL, GULF OF MEXICO
From 31-JAN-20 19:45:00 to 31-JAN-20 19:45:00 (EST-5)
Location: DRY TORTUGAS LIGHT
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A wind gust of 36 knots was measured at Pulaski Shoal Light.

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 31-JAN-20 20:16:00 to 31-JAN-20 20:16:00 (EST-5)
Location: SMITH SHOAL LIGHT
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 Smith Shoal Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT TO THE REEF, GULF OF MEXICO
From 31-JAN-20 22:00:00 to 31-JAN-20 22:00:00 (EST-5)
Location: SOMBRERO KEY LIGHT
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A wind gust of 37 knots was measured at Sombrero Key Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT TO THE REEF, GULF OF MEXICO
From 31-JAN-20 22:09:00 to 31-JAN-20 22:09:00 (EST-5)
Location: DUCK KEY
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 38 knots was measured at an automated WeatherFlow station on Crawl Key.

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 31-JAN-20 20:47:00 to 31-JAN-20 20:47:00 (EST-5)
Location: KEY WEST
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 36 knots was measured at an automated WeatherFlow station at the U.S. Coast Guard Sector Key West.

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 31-JAN-20 21:36:00 to 31-JAN-20 22:21:00 (EST-5)
Location: SMITH SHOAL LIGHT
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 34 to 40 knots was measured at an automated WeatherFlow station at Smith Shoal Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JAN-20 22:41:00 to 31-JAN-20 22:41:00 (EST-5)
Location: ALLIGATOR REEF LIGHT
Magnitude: 45.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 45 knots was measured at an automated WeatherFlow station at Alligator Reef Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JAN-20 22:52:00 to 31-JAN-20 22:52:00 (EST-5)
Location: CARYSFORT REEF LIGHT
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 WeatherFlow station at Carysfort Reef Light.