Severe Thunderstorm Warning 78, NWS New York, NY

Issued

Sep 2, 2021, 12:13 AM EDT (04:13 UTC)

Expired

Sep 2, 2021, 1:45 AM EDT

In force

92 min

Issued by

NWS New York, NY

Area

Storm-based polygon

Tornado

Possible

Damage threat

Considerable

Hail

0.75 in

Wind

70.0 mph

Counties Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Suffolk County, NY

The Brookhaven radar (KOKX), 53 km from the middle of the area, began a volume at 04:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

351 
WUUS51 KOKX 020413
SVROKX
CTC007-009-011-NYC103-020545-
/O.NEW.KOKX.SV.W.0078.210902T0413Z-210902T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
1213 AM EDT Thu Sep 2 2021

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Southwestern New London County in southern Connecticut...
  Southeastern New Haven County in southern Connecticut...
  Southern Middlesex County in southern Connecticut...
  Central Suffolk County in southeastern New York...

* Until 145 AM EDT.

* At 1213 AM EDT, severe thunderstorms were located along a line
  extending from near Guilford to Calverton, moving east at 25 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  North Madison around 1225 AM EDT.
  Riverhead and Clinton around 1230 AM EDT.
  Mattituck around 1240 AM EDT.
  Westbrook around 1245 AM EDT.
  Old Saybrook and Chester around 1255 AM EDT.
  Southold and Old Lyme around 100 AM EDT.
  North Lyme around 105 AM EDT.
  Noyack and Shelter Island around 110 AM EDT.
  Sag Harbor and Bridgehampton around 115 AM EDT.
  East Lyme around 120 AM EDT.
  Waterford around 125 AM EDT.
  New London and Groton around 140 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM EDT for southern
Connecticut...and southeastern New York.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

A Tornado Watch remains in effect until 100 AM EDT for southern
Connecticut...and southeastern New York.

&&

LAT...LON 4124 7202 4130 7208 4124 7237 4116 7232
      4120 7211 4110 7229 4104 7212 4114 7213
      4098 7204 4083 7295 4098 7292 4100 7264
      4115 7233 4126 7241 4123 7289 4139 7290
      4144 7201
TIME...MOT...LOC 0413Z 263DEG 20KT 4131 7272 4094 7274 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

NV

318 
WWUS51 KOKX 020533
SVSOKX

Severe Weather Statement
National Weather Service New York NY
133 AM EDT Thu Sep 2 2021

CTC007-009-011-020542-
/O.CAN.KOKX.SV.W.0078.000000T0000Z-210902T0545Z/
New London CT-New Haven CT-Middlesex CT-
133 AM EDT Thu Sep 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW LONDON...
SOUTHEASTERN NEW HAVEN AND SOUTHERN MIDDLESEX COUNTIES IS
CANCELLED...

The storms which prompted the warning have weakened. Therefore the 
warning has been cancelled.

LAT...LON 4085 7282 4099 7271 4100 7264 4115 7233
      4116 7233 4119 7215 4110 7229 4105 7225
      4105 7219 4106 7217 4104 7212 4114 7213
      4104 7208 4101 7209 4102 7206 4098 7204
TIME...MOT...LOC 0532Z 231DEG 31KT 4115 7234 4097 7268 4082 7281 

$$

NYC103-020545-
/O.CON.KOKX.SV.W.0078.000000T0000Z-210902T0545Z/
Suffolk NY-
133 AM EDT Thu Sep 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM EDT
FOR CENTRAL SUFFOLK COUNTY...

At 132 AM EDT, thunderstorms capable of producing damaging wind 
gusts were located along a line extending from near Greenport to 
near Riverhead to Center Moriches, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

These severe storms will be near...
  Mattituck around 205 AM EDT.
  Southold and Peconic around 215 AM EDT.
  Sag Harbor and Noyack around 220 AM EDT.
  Shelter Island and Greenport around 225 AM EDT.
  Plum Island around 240 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Intense thunderstorm lines can produce brief tornadoes and 
widespread significant wind damage. Although a tornado is not 
immediately likely, it is best to move to an interior room on the 
lowest floor of a building. These storms may cause serious injury 
and significant property damage.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4085 7282 4099 7271 4100 7264 4115 7233
      4116 7233 4119 7215 4110 7229 4105 7225
      4105 7219 4106 7217 4104 7212 4114 7213
      4104 7208 4101 7209 4102 7206 4098 7204
TIME...MOT...LOC 0532Z 231DEG 31KT 4115 7234 4097 7268 4082 7281 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Goodman

Severe Thunderstorm Warnings in Connecticut, 2021Severe Thunderstorm Warnings in New York, 2021Every severe thunderstorm warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.