A cold front and pre-frontal trough, in association with a mid level disturbance brought strong to severe thunderstorms to the coastal waters.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 21-APR-20 13:28:00 to 21-APR-20 13:28:00 (EST-5)
Location: STATION ROBN4
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 37 knots was reported at Bayonne mesonet station.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 21-APR-20 13:48:00 to 21-APR-20 13:48:00 (EST-5)
Location: STATION SDHN4
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 35 knots was reported at Sandy Hook North mesonet.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 13:45:00 to 21-APR-20 13:45:00 (EST-5)
Location: STATION KPTN6
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 43 knots was reported at City Island mesonet station.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 13:49:00 to 21-APR-20 13:49:00 (EST-5)
Location: BAYVILLE WXFLOW
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 43 knots was reported at Bayville mesonet station with an anemometer height of 45 feet.

Marine Thunderstorm Wind in SOUTH SHORE BAYS FROM JONES INLET THROUGH SHINNECOCK BAY, ATLANTIC NORTH
From 21-APR-20 14:23:00 to 21-APR-20 14:23:00 (EST-5)
Location: AMITYVILLE WXFLOW
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 34 knots was reported at Great South Bay mesonet station.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 14:08:00 to 21-APR-20 14:08:00 (EST-5)
Location: EATONS NECK WXFLOW
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 43 knots was reported at Eaton's Neck mesonet station.

Marine Thunderstorm Wind in MORICHES INLET TO FIRE ISLAND INLET NY OUT 20NM, ATLANTIC NORTH
From 21-APR-20 14:48:00 to 21-APR-20 14:48:00 (EST-5)
Location: POINT O WOODS WXFLOW
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 40 knots was reported.

Marine Hail in MORICHES INLET TO FIRE ISLAND INLET NY OUT 20NM, ATLANTIC NORTH
From 21-APR-20 14:50:00 to 21-APR-20 14:50:00 (EST-5)
Location: SMITH POINT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail of 0.75 inches in diameter reported.

Marine Thunderstorm Wind in FIRE ISLAND INLET NY TO MORICHES INLET NY FROM 20 TO 40 NM, ATLANTIC NORTH
From 21-APR-20 14:59:00 to 21-APR-20 14:59:00 (EST-5)
Location: STATION 44025
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 43 knots was reported.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 15:14:00 to 21-APR-20 15:14:00 (EST-5)
Location: CLINTON HARBOR
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 59 knots was reported at Clinton Harbor station.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 15:40:00 to 21-APR-20 15:40:00 (EST-5)
Location: FISHER ISLAND WXFLOW
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 50 knots was reported at Fisher's Island Airport.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 15:40:00 to 21-APR-20 15:40:00 (EST-5)
Location: STATION LDLC3
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 50 knots was reported at Ledge Light station.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 21-APR-20 15:44:00 to 21-APR-20 15:44:00 (EST-5)
Location: FISHERS ISLAND
Magnitude: 44.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 44 knots was reported at Stonington Outer Breakwater station.

Marine Thunderstorm Wind in MONTAUK POINT TO MORICHES INLET NY OUT 20NM, ATLANTIC NORTH
From 21-APR-20 15:19:00 to 21-APR-20 15:19:00 (EST-5)
Location: SHINNECOCK INLET
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A marine thunderstorm wind gust of 42 knots was reported at Shinnecock Light station.