Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 11, NWS New York, NY

May 26, 2021Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at May 26, 2021, 7:27 PM EDT for Greater Bridgeport Planning Region, Connecticut. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 26, 2021, 7:27 PM EDT (23:27 UTC)
Expired
May 26, 2021, 8:15 PM EDT
In force
48 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Greater Bridgeport Planning Region, CT

The radar

The Brookhaven radar (KOKX), 100 km from the middle of the area, began a volume at 23:31 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.

What was reported inside it

TimeReportWhereRemark
May 26, 7:35 PM EDTTSTM WND DMG1 N Sherman, CTTREE DOWN ON POWER LINES AT INTERSECTION OF GELSTON ROAD AND CT ROUTE 39.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 26, 2:48 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 100 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
5 J/kg
Mixed-layer CIN
-233 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

364 
WUUS51 KOKX 262327
SVROKX
CTC001-270015-
/O.NEW.KOKX.SV.W.0011.210526T2327Z-210527T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
727 PM EDT Wed May 26 2021

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  North central Fairfield County in southern Connecticut...

* Until 815 PM EDT.

* At 726 PM EDT, a severe thunderstorm was located near Pawling,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Sherman around 745 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4166 7350 4166 7349 4165 7349 4164 7350
      4154 7345 4153 7353 4167 7352
TIME...MOT...LOC 2326Z 259DEG 25KT 4162 7364 

HAIL...0.75IN
WIND...60MPH
 
$$
2 follow-up statements
025 
WWUS51 KOKX 262353
SVSOKX

Severe Weather Statement
National Weather Service New York NY
753 PM EDT Wed May 26 2021

CTC001-270015-
/O.CON.KOKX.SV.W.0011.000000T0000Z-210527T0015Z/
Fairfield CT-
753 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTH CENTRAL FAIRFIELD COUNTY...

At 752 PM EDT, a severe thunderstorm was located over Sherman, moving
east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of north
central Fairfield County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4166 7350 4166 7349 4165 7349 4164 7350
      4154 7345 4153 7353 4167 7352
TIME...MOT...LOC 2352Z 261DEG 24KT 4158 7349 

HAIL...<.75IN
WIND...60MPH
 
$$
594 
WWUS51 KOKX 270006
SVSOKX

Severe Weather Statement
National Weather Service New York NY
806 PM EDT Wed May 26 2021

CTC001-270016-
/O.EXP.KOKX.SV.W.0011.000000T0000Z-210527T0015Z/
Fairfield CT-
806 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL FAIRFIELD COUNTY
WILL EXPIRE AT 815 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 4166 7350 4166 7349 4165 7349 4164 7350
      4154 7345 4153 7353 4167 7352
TIME...MOT...LOC 0006Z 259DEG 25KT 4160 7336 

$$

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 6:45 PM EDTSpecial Weather StatementOKX60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.