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Marine Thunderstorm Wind · Atlantic North

Marine Thunderstorm Wind July 9, 2015 · De Bay Waters South of East Point Nj To Slaughter Beach De, Atlantic North

61 mph

Measured gust (53 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A severe thunderstorm produced a wind gust of 53 knots (61 mph) at Brandywine Shoal Light in lower Delaware Bay.

The wider storm

A line of strong to severe thunderstorms formed in the warm sector of the Susquehanna Valley and Maryland panhandle and moved through Delaware Bay and the Atlantic coastal waters off the southern New Jersey and Delaware coasts during the evening of the 9th. A warm front lifted northeast into the Lehigh Valley and central New Jersey during the afternoon of the 9th. This permitted sufficient daytime heating preceding an approaching cold front for thunderstorms to maintain their strength as they moved through the area waters.

Began near North Cape May (38.9870, -75.1130).

Source: NOAA Storm Events Database, event 593870. Narratives are written by the National Weather Service forecast office that issued the report.

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