Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 16, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jun 4, 2021, 6:00 PM EDT for Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region, Connecticut. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2021, 6:00 PM EDT (22:00 UTC)
- Expired
- Jun 4, 2021, 6:45 PM EDT
- In force
- 45 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lower Connecticut River Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT
The radar
The Brookhaven radar (KOKX), 88 km from the middle of the area, began a volume at 22:03 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.0 hours before the alert went out and 88 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 233 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 526 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
659
WUUS51 KOKX 042200
SVROKX
CTC007-011-042245-
/O.NEW.KOKX.SV.W.0016.210604T2200Z-210604T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
600 PM EDT Fri Jun 4 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
West central New London County in southern Connecticut...
North central Middlesex County in southern Connecticut...
* Until 645 PM EDT.
* At 600 PM EDT, a severe thunderstorm was located near Marlborough,
or near Glastonbury, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
* This severe thunderstorm will be near...
East Hampton around 605 PM EDT.
Lake Pocotopaug--East Hampton around 645 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4158 7247 4159 7242 4160 7241 4159 7239
4160 7238 4160 7233 4154 7236 4154 7242
4157 7254 4161 7261 4164 7258 4165 7250
TIME...MOT...LOC 2200Z 316DEG 3KT 4164 7252
HAIL...1.00IN
WIND...60MPH
$$
MW1 follow-up statement
058
WWUS51 KOKX 042228
SVSOKX
Severe Weather Statement
National Weather Service New York NY
628 PM EDT Fri Jun 4 2021
CTC007-011-042245-
/O.CON.KOKX.SV.W.0016.000000T0000Z-210604T2245Z/
New London CT-Middlesex CT-
628 PM EDT Fri Jun 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR WEST CENTRAL NEW LONDON AND NORTH CENTRAL MIDDLESEX COUNTIES...
At 627 PM EDT, a severe thunderstorm was located over Marlborough, or
near East Hampton, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
This severe storm will be near...
East Hampton around 635 PM EDT.
Colchester and Lake Pocotopaug--East Hampton around 715 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4158 7247 4159 7242 4160 7241 4159 7239
4160 7238 4160 7233 4154 7236 4154 7242
4157 7254 4161 7261 4164 7258 4165 7250
TIME...MOT...LOC 2227Z 316DEG 3KT 4162 7250
HAIL...1.00IN
WIND...60MPH
$$
MWThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 4:54 PM EDT | Special Weather Statement | OKX | 66 min | |
| Jun 4, 5:51 PM EDT | Special Weather Statement | OKX | 39 min | |
| Jun 4, 6:28 PM EDT | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region | 63 min |
| Jun 4, 6:43 PM EDT | Special Weather Statement | OKX | 47 min |
Nearby
Severe Thunderstorm Warnings in Connecticut, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.