Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 45, NWS New York, NY

July 7, 2021Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jul 7, 2021, 8:25 PM EDT for Greater Bridgeport Planning Region, Connecticut. It was in force for 35 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: Jul 7, 2021, 8:25 PM EDT (00:25 UTC)
Expired: Jul 7, 2021, 9:00 PM EDT
In force: 35 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Hail: 1.0 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 00:27 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 7, 2:41 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.4 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1805 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1235 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

087 
WUUS51 KOKX 080025
SVROKX
CTC001-080100-
/O.NEW.KOKX.SV.W.0045.210708T0025Z-210708T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
825 PM EDT Wed Jul 7 2021

The National Weather Service in Upton NY has issued a

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

* Until 900 PM EDT.

* At 825 PM EDT, a severe thunderstorm was located over Sherman,
  moving east at 20 mph.

  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...
  Sherman around 830 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
      4155 7346 4156 7353 4167 7352
TIME...MOT...LOC 0025Z 276DEG 15KT 4160 7353 

HAIL...1.00IN
WIND...60MPH
 
$$

NV

1 follow-up statement

918 
WWUS51 KOKX 080052
SVSOKX

Severe Weather Statement
National Weather Service New York NY
852 PM EDT Wed Jul 7 2021

CTC001-080101-
/O.EXP.KOKX.SV.W.0045.000000T0000Z-210708T0100Z/
Fairfield CT-
852 PM EDT Wed Jul 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL FAIRFIELD COUNTY
WILL EXPIRE AT 900 PM EDT...
                
The initial storm which prompted the warning has weakened below 
severe limits and moved east of the area, and no longer poses an 
immediate threat to life or property. Therefore, the warning will be 
allowed to expire. However trailing thundestorms will produce gusty 
winds to 40 mph and heavy rain.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southern Connecticut.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Upton NY.

LAT...LON 4166 7350 4166 7349 4165 7349 4164 7350
      4155 7346 4156 7353 4167 7352
TIME...MOT...LOC 0051Z 276DEG 15KT 4159 7339 

$$

NV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:06 PM EDT	Special Weather Statement	OKX		39 min
Jul 7, 9:41 PM EDT	Special Weather Statement	OKX		49 min
Jul 8, 12:29 AM EDT	Special Weather Statement	OKX		46 min
Jul 8, 12:49 AM EDT	Special Weather Statement	OKX		41 min
Jul 8, 1:26 AM EDT	Special Weather Statement	OKX		49 min
Jul 8, 1:30 AM EDT	Special Weather Statement	OKX		45 min
Jul 8, 2:24 AM EDT	Special Weather Statement	OKX		51 min
Jul 8, 5:08 AM EDT	Tropical Storm Warning	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	33 hr
Jul 8, 2:00 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	45 min
Jul 8, 2:45 PM EDT	Special Weather Statement	OKX		45 min
Jul 8, 3:15 PM EDT	Flash Flood Warning	OKX	Greater Bridgeport Planning Region	3 hr
Jul 8, 4:06 PM EDT	Special Weather Statement	OKX		39 min
Jul 8, 4:22 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region	3 hr
Jul 8, 4:53 PM EDT	Special Weather Statement	OKX		52 min
Jul 8, 6:15 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region	3 hr

Nearby

Severe Thunderstorm Warnings in Connecticut, 2021 Every 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.