An approaching cold front triggered a cluster of severe thunderstorms producing multiple macrobursts that impacted the North Shore of Long Island, from Northwest Nassau County onto the North Fork of Long Island.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 03:24:00 to 04-AUG-15 03:24:00 (EST-5)
Location: BAYVILLE WXFLOW
Magnitude: 43.00 MG
Reported by: Mesonet

A gust of 36 knots was measured at the Bayville mesonet location.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 04-AUG-15 03:00:00 to 04-AUG-15 03:00:00 (EST-5)
Location: STATION BGNN4
Magnitude: 35.00 MG
Reported by: Mesonet

A gust of 35 knots was measured at the Mariners Harbor mesonet location.

Marine Thunderstorm Wind in FIRE ISLAND INLET NY TO SANDY HOOK NJ OUT 20NM, ATLANTIC NORTH
From 04-AUG-15 03:07:00 to 04-AUG-15 03:07:00 (EST-5)
Location: BREEZY POINT WXFLOW
Magnitude: 34.00 MG
Reported by: Mesonet

A gust of 34 knots was measured at the Breezy Point mesonet location.

Marine Thunderstorm Wind in NEW YORK HARBOR, ATLANTIC NORTH
From 04-AUG-15 03:07:00 to 04-AUG-15 03:07:00 (EST-5)
Location: BREEZY POINT WXFLOW
Magnitude: 34.00 MG
Reported by: Mesonet

A gust of 34 knots was measured at the Breezy Point mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 03:19:00 to 04-AUG-15 03:19:00 (EST-5)
Location: LARCHMONT HARBOR WXFLOW
Magnitude: 36.00 MG
Reported by: Mesonet

A gust of 36 knots was measured at the Larchmont Harbor mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND W OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 03:50:00 to 04-AUG-15 03:50:00 (EST-5)
Location: EATONS NECK WXFLOW
Magnitude: 41.00 MG
Reported by: Mesonet

A gust of 41 knots was measured at the Eatons Neck mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 05:09:00 to 04-AUG-15 05:09:00 (EST-5)
Location: GREAT GULL ISLAND WXFLOW
Magnitude: 62.00 MG
Reported by: Mesonet

A gust of 62 knots was measured at the Great Gull Island mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 05:21:00 to 04-AUG-15 05:21:00 (EST-5)
Location: FISHERS ISLAND
Magnitude: 53.00 MG
Reported by: Mesonet

A gust of 53 knots was measured at the Stonington Outer Breakwater 4 mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 05:21:00 to 04-AUG-15 05:21:00 (EST-5)
Location: STATION 44060
Magnitude: 41.00 MG
Reported by: Buoy

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 04:10:00 to 04-AUG-15 04:10:00 (EST-5)
Location: SINAI HARBOR WXFLOW
Magnitude: 40.00 MG
Reported by: Mesonet

A gust of 40 knots was measured at the Mount Sinai Harbor mesonet location.

Marine Thunderstorm Wind in LONG ISLAND SOUND E OF NEW HAVEN CT TO PORT JEFFERSON NY, ATLANTIC NORTH
From 04-AUG-15 05:14:00 to 04-AUG-15 05:14:00 (EST-5)
Location: FISHER ISLAND WXFLOW
Magnitude: 49.00 MG
Reported by: Mesonet

A gust of 49 knots was measured at the Fishers Island mesonet location.