Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 53, NWS Boston/Norton, MA

July 22, 2016Capitol Planning Region, Connecticut; Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 22, 2016, 7:39 PM EDT for Capitol Planning Region, Connecticut; Hampden County, Massachusetts. It was in force for 51 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 22, 2016, 7:39 PM EDT (23:39 UTC)
Expired
Jul 22, 2016, 8:30 PM EDT
In force
51 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Capitol Planning Region, CT, Hampden County, MA

The radar

The Albany radar (KENX), 108 km from the middle of the area, began a volume at 23:41 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

Albany, NY (KALY), launched 12:00Z, 11.7 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, Albany, NY at 12:00Z on 2016-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Albany, NY at 12:00Z on 2016-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 299 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1498 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
299 m²/s²
0-3 km storm-relative helicity
262 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

771 
WUUS51 KBOX 222339
SVRBOX
CTC003-MAC013-230030-
/O.NEW.KBOX.SV.W.0053.160722T2339Z-160723T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
739 PM EDT FRI JUL 22 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  SOUTHWESTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 830 PM EDT

* AT 737 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  TOLLAND...OR 12 MILES WEST OF WESTFIELD...MOVING EAST AT 35 MPH.
  ANOTHER STRONG STORM WITH THE POTENTIAL TO BECOME SEVERE WAS
  LOCATED NEAR NEW MARLBORO IN SOUTHERN BERKSHIRE COUNTY.

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

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  SPRINGFIELD...CHICOPEE...ENFIELD...WESTFIELD...HOLYOKE...AGAWAM...
  WEST SPRINGFIELD...LUDLOW...LONGMEADOW...SUFFIELD...
  EAST LONGMEADOW...WINDSOR LOCKS...GRANBY...EAST WINDSOR...
  SOUTHWICK...EAST GRANBY...HARTLAND...RUSSELL...
  GRANVILLE AND BLANDFORD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4212 7306 4215 7307 4215 7303 4219 7302
      4218 7250 4193 7254 4196 7289 4197 7289
      4197 7303 4204 7301 4204 7306 4206 7305
      4211 7307
TIME...MOT...LOC 2337Z 275DEG 31KT 4211 7299 

HAIL...0.75IN
WIND...60MPH
 
$$
FIELD
1 follow-up statement
984 
WWUS51 KBOX 230022
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
822 PM EDT FRI JUL 22 2016

CTC003-MAC013-230030-
/O.CON.KBOX.SV.W.0053.000000T0000Z-160723T0030Z/
HARTFORD CT-HAMPDEN MA-
822 PM EDT FRI JUL 22 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTHERN HARTFORD AND SOUTHWESTERN HAMPDEN COUNTIES...

AT 819 PM EDT...STRONG THUNDERSTORMS WERE OVER THE SOUTHWICK
MASSACHUSETTS AND GRANBY CONNECTICUT AREAS. THEY HAD WEAKENED TO
BELOW SEVERE CRITERIA BUT STILL COULD PRODUCE LOCALIZED DAMAGING
WIND GUSTS. THE STORMS WERE MOVING TO THE EAST AT 35 MPH.

HAZARD...50 TO 60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...ISOLATED WIND DAMAGE POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
SPRINGFIELD...CHICOPEE...ENFIELD...WESTFIELD...AGAWAM...
WEST SPRINGFIELD...LUDLOW...LONGMEADOW...SUFFIELD...
EAST LONGMEADOW...WINDSOR LOCKS...GRANBY...EAST WINDSOR...
SOUTHWICK...EAST GRANBY...HARTLAND AND GRANVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4204 7291 4206 7290 4207 7289 4210 7287
      4218 7250 4193 7254 4196 7289 4197 7289
      4197 7295 4202 7295 4202 7292 4203 7292
TIME...MOT...LOC 0019Z 275DEG 31KT 4208 7250 

HAIL...0.75IN
WIND...60MPH
 
$$
FIELD

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 7:19 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region41 min
Jul 22, 5:09 PM EDTSpecial Weather StatementBOXWorcester36 min
Jul 22, 5:36 PM EDTSpecial Weather StatementBOXHampshire39 min
Jul 22, 5:54 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire51 min
Jul 22, 6:36 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire, Worcester39 min
Jul 22, 6:53 PM EDTSevere Thunderstorm WarningBOXHampshire, Worcester52 min
Jul 22, 7:13 PM EDTSevere Thunderstorm WarningBOXHampshire, Worcester20 min
Jul 22, 7:16 PM EDTSevere Thunderstorm WarningBOXWorcester44 min
Jul 22, 7:17 PM EDTSpecial Weather StatementBOXHampden58 min
Jul 22, 7:57 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Suffolk, Worcester48 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2016Severe Thunderstorm Warnings in Massachusetts, 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.