Name: Coastal Flood in New York, November 7 to 8, 2012
Start: 2012-11-07T17:30
End: 2012-11-08T05:30
Location: New York

Where it happened

Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 4

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.

What happened

The episode as NWS OKX wrote it up.

Low pressure developed across the Southeast U.S. on November 6 and intensified as it moved northeast, passing south and east of Long Island by November 8.

This nor'easter came on the heels of Superstorm Sandy. Strong north to northeast winds resulted in widespread minor and some moderate coastal flooding during the times of high tides.

What forecasters said that day

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 Nov 7, 5:15 PM EST, 15 minutes earlier.

Area forecast discussion, Nov 7, 5:15 PM EST, 15 minutes before

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Hazardous weather outlook, Nov 7, 4:58 PM EST, 32 minutes before

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In the hours before

Local storm report, Nov 7, 2:13 PM EST, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
213 PM EST WED NOV 07 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0204 PM     NON-TSTM WND DMG LAKE RONKONKOMA         40.83N  73.11W
11/07/2012                   SUFFOLK            NY   TRAINED SPOTTER

            8 INCH DIAMETER TREE SNAPPED IN HALF ON WITTRIDGE ROAD.

&&

DS

Special weather statement, Nov 7, 4:30 PM EST, 1 hour before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

4 coastal flood. Local standard time, as filed.

Coastal Flood, Southeast Suffolk

When: November 7, 5:30 PM EST to November 8, 5:30 AM EST
Where: Southeast Suffolk forecast zone
Reported by: Other Federal Agency
Coordinates: 40.941, -72.685 (the zone’s center; the record gives no point)

The USGS tidal gauge in Great South Bay at Lindenhurst recorded a water level of 3.92 ft. MLLW during the early morning high tide cycle of November 8, 2012. This is .12 ft. above the threshold for moderate coastal flooding established by the National Weather Service.

The USGS tidal gauge in Riverhead on the Peconic Bay recorded a water level of 6.35 ft. MLLW during the early morning high tide cycle of November 8, 2012. This is .25 ft. above the threshold for moderate coastal flooding established by the National Weather Service.

Coastal Flood, Northeast Suffolk

When: November 7, 5:30 PM EST to 8:30 PM EST
Where: Northeast Suffolk forecast zone
Reported by: Other Federal Agency
Coordinates: 40.941, -72.685 (the zone’s center; the record gives no point)

The USGS tidal gauge in Riverhead on the Peconic Bay recorded a water level of 6.35 ft. MLLW during the early morning high tide cycle of November 8, 2012. This is .25 ft. above the threshold for moderate coastal flooding established by the National Weather Service.

Coastal Flood, Southern Nassau

When: November 8, 2:00 AM EST to 3:00 AM EST
Where: Southern Nassau forecast zone
Reported by: Other Federal Agency
Coordinates: 40.732, -73.585 (the zone’s center; the record gives no point)

The USGS tidal gauge in Hudson Bay at Freeport recorded a water level of 5.84 ft. MLLW during the early morning high tide cycle of November 8, 2012. This is .04 ft. above the threshold for moderate coastal flooding established by the National Weather Service.

Coastal Flood, Southwest Suffolk

When: November 8, 3:30 AM EST to 5:30 AM EST
Where: Southwest Suffolk forecast zone
Reported by: Other Federal Agency
Coordinates: 40.941, -72.685 (the zone’s center; the record gives no point)

The USGS tidal gauge in Great South Bay at Lindenhurst recorded a water level of 3.92 ft. MLLW during the early morning high tide cycle of November 8, 2012. This is .12 ft. above the threshold for moderate coastal flooding established by the National Weather Service.

What these are

Coastal Flood: Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New York in 2012 Every state in 2012 This day in weather history Warnings in New York, November 2012

Sources

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: 426450, 426452, 426446, 426447.