Numerous showers and thunderstorms developed southeast of a stationary front across Central Florida, and assisted by a unseasonably deep upper mid-latitude trough across the Gulf of Mexico and Southeast United States.

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-JUL-17 14:45:00 to 31-JUL-17 14:45:00 (EST-5)
Location: KEY WEST
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 the U.S. Coast Guard Sector 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 31-JUL-17 14:48:00 to 31-JUL-17 14:48:00 (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 at the National Ocean Service Station at NOAA's Florida Keys National Marine Sanctuary Office.

Marine Thunderstorm Wind in FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND BUTTONWOOD SOUND, GULF OF MEXICO
From 31-JUL-17 11:53:00 to 31-JUL-17 11:53:00 (EST-5)
Location: LAYTON
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 Citizen Weather Observing Program station hosted by the Florida Keys Mosquito Control on Lower Matecumbe Key.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JUL-17 12:00:00 to 31-JUL-17 12:00:00 (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 HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JUL-17 12:04:00 to 31-JUL-17 12:04:00 (EST-5)
Location: ALLIGATOR 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 Alligator Reef Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JUL-17 12:25:00 to 31-JUL-17 12:25:00 (EST-5)
Location: CARYSFORT REEF LIGHT
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 WeatherFlow station at Carysfort Reef Light.

Marine Thunderstorm Wind in HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF, GULF OF MEXICO
From 31-JUL-17 13:04:00 to 31-JUL-17 13:04:00 (EST-5)
Location: ALLIGATOR REEF 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 Alligator Reef Light.

Marine Thunderstorm Wind in FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND BUTTONWOOD SOUND, GULF OF MEXICO
From 31-JUL-17 14:06:00 to 31-JUL-17 14:06:00 (EST-5)
Location: PLANTATION KEY
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 35 knots was measured at an automated WeatherFlow station on Upper Matecumbe Key.