A constant stream of tropical moisture was acted on by a very slowly moving cold front. Several rounds of thunderstorms developed, producing severe weather and a few reports of flash flooding.

Waterspout in MISSISSIPPI SOUND, GULF OF MEXICO
From 09-MAY-19 15:29:00 to 09-MAY-19 15:29:00 (CST-6)
Location: WEST PIER GULFPORT STATION (GWPM6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Harrison County Emergency Manager reported a waterspout south of the Hewes Avenue/US Highway 90 intersection. Time and location were estimated based on radar.

Marine Thunderstorm Wind in MISSISSIPPI SOUND, GULF OF MEXICO
From 09-MAY-19 15:56:00 to 09-MAY-19 15:56:00 (CST-6)
Location: SHIP ISLAND PASS STATION (SIPM6)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Weatherflow Mesonet site at Ship Island measured a peak wind gust of 42 knots from a thunderstorm.

Marine Thunderstorm Wind in COASTAL WATERS FROM BOOTHVILLE LOUISIANA TO SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM, GULF OF MEXICO
From 09-MAY-19 18:35:00 to 09-MAY-19 18:35:00 (CST-6)
Location: MAIN PASS 140 AWOS (KMIS)
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS in Main Pass Block 140B measured a wind gust of 40 knots in a thunderstorm.

Marine Thunderstorm Wind in COASTAL WATERS FROM SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON LOUISIANA OUT 20 NM, GULF OF MEXICO
From 09-MAY-19 18:15:00 to 09-MAY-19 18:15:00 (CST-6)
Location: WEST DELTA 27A AWOS (KDLP)
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS in West Delta Block 27A measured a peak wind gust of 40 knots in a thunderstorm.

Marine Thunderstorm Wind in COASTAL WATERS FROM PORT FOURCHON LOUISIANA TO LOWER ATCHAFALAYA RIVER LOUISIANA FROM 20 TO 60 NM, GULF OF MEXICO
From 10-MAY-19 16:55:00 to 10-MAY-19 16:55:00 (CST-6)
Location: SHIP SHOAL OIL PLATFORM (KSPR)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS in Ship Shoal Block 178 measured a 34 knot wind gust in a thunderstorm.

Marine Thunderstorm Wind in COASTAL WATERS FROM SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON LOUISIANA OUT 20 NM, GULF OF MEXICO
From 09-MAY-19 19:00:00 to 09-MAY-19 19:00:00 (CST-6)
Location: BURLWOOD C-MAN STATION (BURL1)
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The C-MAN station at Southwest Pass measured a peak wind gust of 38 knots during a thunderstorm.

Marine Thunderstorm Wind in COASTAL WATERS FROM PASCAGOULA MISSISSIPPI TO STAKE ISLAND LOUISIANA FROM 20 TO 60 NM, GULF OF MEXICO
From 09-MAY-19 18:55:00 to 09-MAY-19 18:55:00 (CST-6)
Location: MAIN PASS 289 AWOS (KVKY)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS station in Main Pass Block 289C measured a wind gust of 39 knots in a thunderstorm.

Marine Thunderstorm Wind in MISSISSIPPI SOUND, GULF OF MEXICO
From 09-MAY-19 17:00:00 to 09-MAY-19 17:00:00 (CST-6)
Location: PETIS BOIS ISLAND STATION (PTBM6)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The C-MAN station at Petit Bois Island measured a peak wind gust of 42 knots in a thunderstorm.