In spite of lacking deep moisture, ideal wind conditions allowed for the development of mature cloud lines throughout the Lower, Middle and Upper Florida Keys.  Numerous waterspouts developed primarily in the nearshore Florida Bay and Gulf of Mexico waters.

Waterspout in BAYSIDE AND GULFSIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE, GULF OF MEXICO
From 08-MAY-18 07:30:00 to 08-MAY-18 07:30:00 (EST-5)
Location: MARATHON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Coast Guard

A waterspout was reported by a member of the USCG Auxiliary about 4 miles north of Marathon.  The waterspout was extremely tilted from the vertical.

Waterspout in FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND BUTTONWOOD SOUND, GULF OF MEXICO
From 08-MAY-18 07:53:00 to 08-MAY-18 07:53:00 (EST-5)
Location: PLANTATION KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A waterspout was observed a waterspout north of Plantation Key.  The appearance of the waterspout was skinny and vertical.

Waterspout in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 08-MAY-18 09:00:00 to 08-MAY-18 09:09:00 (EST-5)
Location: SMITH SHOAL LIGHT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A skinny and vertical waterspout was reported one half mile northeast of Cottrell Key, with an attendant spray ring.

Waterspout in HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT TO THE REEF, GULF OF MEXICO
From 08-MAY-18 11:03:00 to 08-MAY-18 11:03:00 (EST-5)
Location: MARATHON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A probable waterspout was observed southeast of Vaca Key via social media posts.  Time and location was estimated from radar imagery.

Waterspout in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 08-MAY-18 13:08:00 to 08-MAY-18 13:18:00 (EST-5)
Location: BIG COPPITT KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A skinny and moderately tilted waterspout was observed northwest of Boca Chica Key.

Waterspout in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 08-MAY-18 17:27:00 to 08-MAY-18 17:30:00 (EST-5)
Location: BIG COPPITT KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thin waterspout was observed north of Stock Island.

Waterspout in GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS, GULF OF MEXICO
From 08-MAY-18 17:43:00 to 08-MAY-18 17:43:00 (EST-5)
Location: BIG COPPITT KEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A rain-wrapped waterspout was observed with a large spray ring.

Waterspout in HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF, GULF OF MEXICO
From 08-MAY-18 10:15:00 to 08-MAY-18 10:25:00 (EST-5)
Location: KEY WEST
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Multipe waterspouts were observed by NWS personnel and several members of the public about 4 miles west of Key West.  One waterspout had a significant spray ring, coupled with a thick, vertical condensation funnel.