Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 49, NWS New York, NY

August 11, 2016Southeastern Connecticut Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Aug 11, 2016, 4:41 PM EDT for Southeastern Connecticut Planning Region, Connecticut. It was in force for 49 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
Aug 11, 2016, 4:41 PM EDT (20:41 UTC)
Expired
Aug 11, 2016, 5:30 PM EDT
In force
49 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Southeastern Connecticut Planning Region, CT

The radar

The Boston radar (KBOX), 93 km from the middle of the area, began a volume at 20:44 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, 8.7 hours before the alert went out and 98 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 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1804 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 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939Sfc1 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
1804 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

184 
WUUS51 KOKX 112041
SVROKX
CTC011-112130-
/O.NEW.KOKX.SV.W.0049.160811T2041Z-160811T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
441 PM EDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NEW LONDON COUNTY IN SOUTHERN CONNECTICUT...

* UNTIL 530 PM EDT

* AT 440 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM WILLIMANTIC TO NEAR HEBRON...MOVING SOUTHEAST AT 45
  MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SPRAGUE AROUND 450 PM EDT. 
  SALEM AND BOZRAH AROUND 455 PM EDT. 
  NORWICH...GRISWOLD AND LISBON AROUND 500 PM EDT. 
  PRESTON...VOLUNTOWN AND GALES FERRY AROUND 505 PM EDT. 
  LEDYARD AND LEDYARD CENTER AROUND 510 PM EDT. 
  NORWICH--NEW LONDON AROUND 520 PM EDT. 

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
POQUONOCK BRIDGE...FRANKLIN...MONTVILLE...JEWETT CITY AND NORTH
STONINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4142 7180 4141 7184 4140 7184 4130 7198
      4130 7200 4149 7232 4153 7233 4153 7238
      4158 7246 4160 7241 4160 7233 4164 7233
      4167 7227 4169 7227 4171 7224 4166 7216
      4166 7212 4163 7196 4164 7186 4164 7179
TIME...MOT...LOC 2040Z 295DEG 41KT 4173 7221 4167 7236 

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

BC
1 follow-up statement
080 
WWUS51 KOKX 112119
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
519 PM EDT THU AUG 11 2016

CTC011-112130-
/O.CON.KOKX.SV.W.0049.000000T0000Z-160811T2130Z/
NEW LONDON CT-
519 PM EDT THU AUG 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHWESTERN NEW LONDON COUNTY...

AT 519 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR WINDHAM TO MARLBOROUGH...MOVING SOUTHEAST AT 10
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  LEBANON AROUND 525 PM EDT. 
  SPRAGUE AROUND 530 PM EDT. 

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
FRANKLIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4149 7231 4153 7233 4153 7238 4158 7246
      4160 7241 4159 7239 4160 7238 4160 7233
      4164 7233 4167 7227 4169 7227 4171 7224
      4166 7216 4166 7212 4164 7200 4159 7210
TIME...MOT...LOC 2119Z 296DEG 9KT 4173 7213 4164 7244 

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

BC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 9:24 AM EDTSpecial Weather StatementOKX51 min
Aug 11, 2:27 PM EDTExcessive Heat WatchOKXGreater Bridgeport Planning Region, Naugatuck Valley Planning Region24 hr
Aug 11, 3:26 PM EDTSpecial Weather StatementOKX49 min
Aug 11, 6:46 PM EDTSpecial Weather StatementOKX44 min
Aug 11, 6:53 PM EDTSevere Thunderstorm WarningOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region52 min
Aug 11, 6:56 PM EDTAreal Flood AdvisoryOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region2 hr
Aug 11, 7:21 PM EDTFlash Flood WarningOKXLower Connecticut River Valley Planning Region114 min
Aug 11, 7:45 PM EDTSevere Thunderstorm WarningOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region45 min
Aug 11, 7:56 PM EDTAreal Flood AdvisoryOKXGreater Bridgeport Planning Region2 hr

Nearby

Severe Thunderstorm Warnings in Connecticut, 2016Every severe thunderstorm warning in 2016

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.