A persistent east wind developed between low pressure drifting through the Great Lakes and high pressure anchored over the Canadian Maritimes. The surge created by these winds, combined with astronomically high Spring tides, resulted in widespread minor with isolated moderate coastal flooding during the morning high tide cycles of September 28 and September 29.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OKX wrote it up.
A persistent east wind developed between low pressure drifting through the Great Lakes and high pressure anchored over the Canadian Maritimes. The surge created by these winds, combined with astronomically high Spring tides, resulted in widespread minor with isolated moderate coastal flooding during the morning high tide cycles of September 28 and September 29. The coast line adjacent to Western Long Island Sound, New York Harbor, and the southern bays of Long Island, Queens and Brooklyn were the most affected.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New York, NY wrote its last area forecast discussion before the first event at Sep 28, 9:34 AM EST, 1 hour 41 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 coastal flood. Local standard time, as filed.
The NOS tidal gauge at Kings Point recorded a water level of 10.54 ft. MLLW during the morning high tide cycle of September 28 2011. This is .04 ft. above the threshold for moderate coastal flooding established by the National Weather Service.
The USGS tidal gauge at Hudson Bay at Freeport recorded a water level of 6.03 ft. MLLW during the morning high tide cycle of September 29 2011. This is .23 ft. above the threshold for moderate coastal flooding established by the National Weather Service.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2011Every state in 2011This day in weather historyWarnings in New York, September 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 349712, 349713.