Alert archive / Connecticut / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS New York, NY

August 1, 2018Greater Bridgeport Planning Region, Naugatuck Valley Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Aug 1, 2018, 3:05 PM EDT for Greater Bridgeport Planning Region, Naugatuck Valley Planning Region, Connecticut. It was in force for 26 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: Aug 1, 2018, 3:05 PM EDT (19:05 UTC)
Expired: Aug 1, 2018, 3:31 PM EDT
In force: 26 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Greater Bridgeport Planning Region, CT, Naugatuck Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 47 km from the middle of the area, began a volume at 19:08 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

Time	Report	Where	Remark
Aug 1, 3:08 PM EDT	TSTM WND DMG	Godfrey Corner, CT	TREES AND WIRES DOWN ON GODFREY ROAD WEST JUST WEST OF PINEFIELD LANE.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.1 hours before the alert went out and 47 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: 512 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

198 
WUUS51 KOKX 011905
SVROKX
CTC001-009-011945-
/O.NEW.KOKX.SV.W.0021.180801T1905Z-180801T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
305 PM EDT WED AUG 1 2018

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Central Fairfield County in southern Connecticut...
  Southwestern New Haven County in southern Connecticut...

* Until 345 PM EDT.

* At 305 PM EDT, a severe thunderstorm was located over Weston, or 8
  miles northeast of New Canaan, moving east at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Bridgeport and Fairfield around 325 PM EDT.
  Trumbull around 335 PM EDT.
  Milford and Shelton around 345 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4123 7298 4120 7301 4120 7305 4118 7309
      4117 7345 4127 7349 4142 7301
TIME...MOT...LOC 1905Z 258DEG 17KT 4123 7338 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

054 
WWUS51 KOKX 011931
SVSOKX

Severe Weather Statement
National Weather Service New York NY
331 PM EDT WED AUG 1 2018

CTC001-009-011941-
/O.CAN.KOKX.SV.W.0021.000000T0000Z-180801T1945Z/
Fairfield CT-New Haven CT-
331 PM EDT WED AUG 1 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FAIRFIELD AND
SOUTHWESTERN NEW HAVEN COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

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

LAT...LON 4123 7298 4120 7301 4120 7305 4118 7309
      4117 7345 4127 7349 4142 7301
TIME...MOT...LOC 1930Z 258DEG 17KT 4125 7323 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 2:33 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region	78 min
Aug 1, 2:45 PM EDT	Special Weather Statement	OKX		45 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2018 Every severe thunderstorm warning in 2018

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.