An upper level trough as a cold front approached at the surface. Just before a line of thunderstorms reached our area along the cold front, thunderstorms developed over our area in a zone of low-level warm advection. This moisture eventually interacted with the storms along the cold front and helped strengthen them. Severe thunderstorms developed and produced damaging winds over the waters.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 18-AUG-23 05:01:00 to 18-AUG-23 05:01:00 (EST-5)
Location: NORWALK LIGHT WXFLOW
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site XNOR at Norwalk Light in CT measured a 51 knot wind gust.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 18-AUG-23 05:59:00 to 18-AUG-23 05:59:00 (EST-5)
Location: BAYONNE WXFLOW
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site at Honorable William Wall in NY measured at 36 knot wind gust.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 18-AUG-23 05:49:00 to 18-AUG-23 05:49:00 (EST-5)
Location: BAYONNE WXFLOW
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site FW2280 in Jersey City NJ measured a 42 knot wind gust.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 18-AUG-23 04:42:00 to 18-AUG-23 04:42:00 (EST-5)
Location: BAYVILLE WXFLOW
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site XBAY in Bayville NY measured a 41 knot wind gust.

Marine Thunderstorm Wind in LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE MOUTH OF THE CONNECTICUT RIVER, ATLANTIC NORTH
From 18-AUG-23 05:53:00 to 18-AUG-23 05:53:00 (EST-5)
Location: NEW HAVEN AIRPORT
Magnitude: 49.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS site KHVN at New Haven Airport in CT measured a 49 knot wind gust.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 18-AUG-23 04:06:00 to 18-AUG-23 04:06:00 (EST-5)
Location: STATION ROBN4
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site ROBN6 in Robbins Reef NJ measured a 40 knot wind gust.

Marine Thunderstorm Wind in LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE MOUTH OF THE CONNECTICUT RIVER, ATLANTIC NORTH
From 18-AUG-23 05:56:00 to 18-AUG-23 05:56:00 (EST-5)
Location: NEW HAVEN AIRPORT
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site EW5788 in Stony Creek CT measured a 42 knot wind gust.

Marine Thunderstorm Wind in LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE MOUTH OF THE CONNECTICUT RIVER, ATLANTIC NORTH
From 18-AUG-23 06:01:00 to 18-AUG-23 06:01:00 (EST-5)
Location: NEW HAVEN AIRPORT
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site at Thimble Islands CT measured a 35 knot wind gust.

Marine Thunderstorm Wind in LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE MOUTH OF THE CONNECTICUT RIVER, ATLANTIC NORTH
From 18-AUG-23 06:07:00 to 18-AUG-23 06:07:00 (EST-5)
Location: HAMMANASSET WXFLOW
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site XHAM in Hammonasset CT measured a 34 knot wind gust.