A moist air mass south of a stalled frontal boundary across the northern Gulf of Mexico provided instability for afternoon thunderstorms along the Gulf Coast of Florida.  Many of these storms produced strong marine gusts.

Marine Thunderstorm Wind in BONITA BEACH TO ENGLEWOOD FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 13:25:00 to 15-SEP-13 13:25:00 (EST-5)
Location: CAPTIVA PASS
Magnitude: 41.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 2 WSW Punta Rassa (XSBI) recorded a thunderstorm wind gust of 41 knots.

Marine Thunderstorm Wind in BONITA BEACH TO ENGLEWOOD FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 14:10:00 to 15-SEP-13 14:10:00 (EST-5)
Location: GASPARILLA PASS
Magnitude: 38.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 1 WSW Charlotte Harbor (XCHL) recorded a thunderstorm wind gust of 38 knots.

Marine Thunderstorm Wind in BONITA BEACH TO ENGLEWOOD FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 13:35:00 to 15-SEP-13 13:35:00 (EST-5)
Location: SAN CARLOS BAY
Magnitude: 49.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 3 SSW Cape Coral (XTRP) recorded a thunderstorm wind gust of 49 knots.

Marine Thunderstorm Wind in BONITA BEACH TO ENGLEWOOD FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 14:00:00 to 15-SEP-13 14:00:00 (EST-5)
Location: CHARLOTTE HARBOR
Magnitude: 42.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 2 S Boca Grande recorded a 42 knot thunderstorm wind gust.

Marine Thunderstorm Wind in BONITA BEACH TO ENGLEWOOD FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 13:15:00 to 15-SEP-13 13:15:00 (EST-5)
Location: SAN CARLOS BAY
Magnitude: 36.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 3 SSW Cape Coral (XTRP) recorded a thunderstorm wind gust of 36 knots.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 15:22:00 to 15-SEP-13 15:22:00 (EST-5)
Location: LONGBOAT KEY
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Sarasota-Bradenton International Airport (KSRQ) measured a 36 knot thunderstorm wind gust.

Marine Thunderstorm Wind in TAMPA BAY, GULF OF MEXICO
From 15-SEP-13 16:04:00 to 15-SEP-13 16:04:00 (EST-5)
Location: OLD TAMPA BAY
Magnitude: 44.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Saint Petersburg-Clearwater International Airport (KPIE) measured a 44 knot thunderstorm wind gust.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 15:40:00 to 15-SEP-13 15:40:00 (EST-5)
Location: CLEARWATER BEACH
Magnitude: 37.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 1 E Belleair (KBLA) recorded a thunderstorm wind gust of 37 knots.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 15:21:00 to 15-SEP-13 15:21:00 (EST-5)
Location: SARASOTA BEACH
Magnitude: 36.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 1 WNW Sarasota recorded a thunderstorm wind gust of 36 knots.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 16:00:00 to 15-SEP-13 16:00:00 (EST-5)
Location: ST PETERSBURG BEACH
Magnitude: 45.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station XEGM on Egmont Key recorded a thunderstorm wind gust of 45 knots.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 16:18:00 to 15-SEP-13 16:18:00 (EST-5)
Location: ST PETERSBURG BEACH
Magnitude: 39.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station at Treasure Island (CW4299) recorded a thunderstorm wind gust of 39 knots.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 16:10:00 to 15-SEP-13 16:10:00 (EST-5)
Location: ST PETERSBURG BEACH
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station on Egmont Key (XEGM) recorded a thunderstorm wind gust of 54 knots.

Marine Thunderstorm Wind in TAMPA BAY, GULF OF MEXICO
From 15-SEP-13 16:02:00 to 15-SEP-13 16:02:00 (EST-5)
Location: OLD TAMPA BAY
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Tampa International Airport (KTPA) measured a 35 knot thunderstorm wind gust.

Marine Thunderstorm Wind in ENGLEWOOD TO TARPON SPRINGS FL OUT 20NM, GULF OF MEXICO
From 15-SEP-13 14:35:00 to 15-SEP-13 14:35:00 (EST-5)
Location: VENICE
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS at Venice Municipal Airport (KVNC) measured a 36 knot thunderstorm wind gust.