Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 21, NWS Boston/Norton, MA

June 21, 2016Capitol Planning Region, Connecticut; Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 21, 2016, 4:05 AM EDT for Capitol Planning Region, Connecticut; Hampden County, Massachusetts. It was in force for 40 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
Jun 21, 2016, 4:05 AM EDT (08:05 UTC)
Expired
Jun 21, 2016, 4:45 AM EDT
In force
40 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), 123 km from the middle of the area, began a volume at 08:08 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

TimeReportWhereRemark
Jun 21, 4:10 AM EDTTSTM WND DMGGranville, MATREE DOWN ON WIRES ON HARTLAND HOLLOW ROAD

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

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 8.1 hours before the alert went out and 114 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 00:00Z on 2016-06-21Temperature 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 00:00Z on 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2305 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

407 
WUUS51 KBOX 210805
SVRBOX
CTC003-013-MAC013-210845-
/O.NEW.KBOX.SV.W.0021.160621T0805Z-160621T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
405 AM EDT TUE JUN 21 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

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

* UNTIL 445 AM EDT

* AT 404 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  GRANVILLE...OR NEAR WESTFIELD...MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  SPRINGFIELD...CHICOPEE...ENFIELD...WESTFIELD...AGAWAM...
  WEST SPRINGFIELD...LONGMEADOW...SUFFIELD...EAST LONGMEADOW...
  ELLINGTON...WILBRAHAM...SOMERS...GRANBY...EAST WINDSOR...
  SOUTHWICK...EAST GRANBY...HAMPDEN...HARTLAND...
  RUSSELL AND GRANVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4203 7298 4217 7292 4211 7241 4191 7247
TIME...MOT...LOC 0804Z 284DEG 28KT 4208 7286 

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

WTB
2 follow-up statements
395 
WWUS51 KBOX 210826
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
426 AM EDT TUE JUN 21 2016

CTC003-013-MAC013-210845-
/O.CON.KBOX.SV.W.0021.000000T0000Z-160621T0845Z/
TOLLAND CT-HARTFORD CT-HAMPDEN MA-
426 AM EDT TUE JUN 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM EDT
FOR NORTHWESTERN TOLLAND...NORTHEASTERN HARTFORD AND SOUTHWESTERN
HAMPDEN COUNTIES...

AT 425 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED BETWEEN AGAWAM
MASSACHUSETTS AND ENFIELD CONNECTICUT...MOVING SOUTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
SPRINGFIELD...CHICOPEE...ENFIELD...WESTFIELD...AGAWAM...
WEST SPRINGFIELD...LONGMEADOW...SUFFIELD...EAST LONGMEADOW...
ELLINGTON...WILBRAHAM...SOMERS...GRANBY...EAST WINDSOR...SOUTHWICK...
EAST GRANBY...HAMPDEN...HARTLAND...RUSSELL AND GRANVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4203 7298 4217 7292 4211 7241 4191 7247
TIME...MOT...LOC 0825Z 284DEG 28KT 4204 7264 

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

WTB
020 
WWUS51 KBOX 210839
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
439 AM EDT TUE JUN 21 2016

CTC003-013-MAC013-210847-
/O.EXP.KBOX.SV.W.0021.000000T0000Z-160621T0845Z/
TOLLAND CT-HARTFORD CT-HAMPDEN MA-
439 AM EDT TUE JUN 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TOLLAND...
NORTHEASTERN HARTFORD AND SOUTHWESTERN HAMPDEN COUNTIES WILL EXPIRE
AT 445 AM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE...THE WARNING
WILL BE ALLOWED TO EXPIRE.

LAT...LON 4203 7298 4217 7292 4211 7241 4191 7247
TIME...MOT...LOC 0836Z 284DEG 28KT 4204 7264 

$$

WTB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 1:39 AM EDTSpecial Weather StatementBOXFranklin51 min
Jun 21, 3:05 AM EDTSpecial Weather StatementBOXMiddlesex, Worcester55 min
Jun 21, 3:22 AM EDTSpecial Weather StatementBOXHampden, Hampshire53 min
Jun 21, 4:02 AM EDTSevere Thunderstorm WarningBOXBristol, Norfolk43 min
Jun 21, 4:18 AM EDTSpecial Marine WarningBOX87 min
Jun 21, 4:34 AM EDTSpecial Marine WarningBOX86 min
Jun 21, 4:56 AM EDTSpecial Marine WarningBOX2 hr
Jun 21, 5:12 AM EDTSevere Thunderstorm WarningBOXBristol48 min
Jun 21, 5:38 AM EDTSpecial Marine WarningBOX112 min
Jun 21, 5:44 AM EDTSpecial Marine WarningBOX61 min
Jun 21, 3:39 PM EDTSmall Craft Advisory for Hazardous SeasBOX39 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.