A quasi-linear convective system swept through the Florida Keys from northwest to southeast. Widespread reports of gale-force wind gusts associated with the convective line along with a few waterspouts were received throughout the Florida Keys coastal waters.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 09-DEC-17 10:32:00 to 09-DEC-17 10:32:00 (EST-5)
Location: ALLIGATOR REEF LIGHT
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 43 knots was measured at an automated WeatherFlow station at Alligator Reef 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 09-DEC-17 17:21:00 to 09-DEC-17 17:21:00 (EST-5)
Location: SMITH SHOAL LIGHT
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 at Smith Shoal Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 09-DEC-17 11:00:00 to 09-DEC-17 11:00:00 (EST-5)
Location: CARYSFORT REEF LIGHT
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 Carysfort Reef Light.

Marine Thunderstorm Wind in GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL, GULF OF MEXICO
From 09-DEC-17 17:00:00 to 09-DEC-17 17:00:00 (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 BAYSIDE AND GULFSIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE, GULF OF MEXICO
From 09-DEC-17 09:54:00 to 09-DEC-17 09:54:00 (EST-5)
Location: MARATHON
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

A wind gust of 37 knots was measured at an automated National Ocean Service station adjacent to the U.S. Coast Guard Station Marathon.

Marine Thunderstorm Wind in FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND BUTTONWOOD SOUND, GULF OF MEXICO
From 09-DEC-17 10:37:00 to 09-DEC-17 10:37:00 (EST-5)
Location: PLANTATION 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 Upper Matecumbe Key.

Marine Thunderstorm Wind in BAYSIDE AND GULFSIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE, GULF OF MEXICO
From 09-DEC-17 05:06:00 to 09-DEC-17 05:06:00 (EST-5)
Location: MARATHON
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A wind gust of 34 knots was measured at The Florida Keys Marathon International Airport.

Marine Thunderstorm Wind in GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL, GULF OF MEXICO
From 09-DEC-17 05:06:00 to 09-DEC-17 05:06:00 (EST-5)
Location: DRY TORTUGAS LIGHT
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A wind gust of 42 knots was measured at Pulaski Shoal Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 09-DEC-17 06:45:00 to 09-DEC-17 06:45:00 (EST-5)
Location: CARYSFORT REEF LIGHT
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 39 knots was measured at an automated WeatherFlow station at Carysfort Reef Light.

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 09-DEC-17 08:18:00 to 09-DEC-17 08:18:00 (EST-5)
Location: KEY WEST
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

A wind gust of 35 knots was measured at a National Ocean Service automated station atop the Florida Keys National Marine Sanctuary office in Key West.

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 09-DEC-17 08:21:00 to 09-DEC-17 08:21:00 (EST-5)
Location: KEY WEST
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 at the U.S. Coast Guard Station Key West.

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 09-DEC-17 08:30:00 to 09-DEC-17 08:30:00 (EST-5)
Location: KEY WEST
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

A wind gust of 40 knots was measured from a National Ocean Service automated station atop the Florida Keys National Marine Sanctuary office in Key West.

Waterspout in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 09-DEC-17 08:53:00 to 09-DEC-17 08:53:00 (EST-5)
Location: BIG PINE KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mariner

A boater reported a well-developed waterspout with a visible spray right near Coupon Bight moving northeast.

Waterspout in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 09-DEC-17 09:06:00 to 09-DEC-17 09:06:00 (EST-5)
Location: BIG PINE KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mariner

A boater reported a well-developed waterspout with a visible spray ring just north of No Name Key moving northeast.

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 09-DEC-17 09:15:00 to 09-DEC-17 09:15:00 (EST-5)
Location: BIG PINE KEY
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 40 knots was measured at an automated station at a residence near the northern tip of Little Torch Key.

Marine Thunderstorm Wind in HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT TO THE REEF, GULF OF MEXICO
From 09-DEC-17 05:19:00 to 09-DEC-17 05:19:00 (EST-5)
Location: MARATHON
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 34 knots was measured at an automated Citizen Weather Observing Program station in the Little Venice subdivision of Marathon.