Alert archive / Connecticut / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Boston/Norton, MA

June 2, 2013Capitol Planning Region, Connecticut; Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 2, 2013, 6:13 PM EDT for Capitol Planning Region, Connecticut; Hampden County, Massachusetts. It was in force for 47 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: Jun 2, 2013, 6:13 PM EDT (22:13 UTC)
Expired: Jun 2, 2013, 7:00 PM EDT
In force: 47 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Capitol Planning Region, CT, Hampden County, MA

The radar

The Boston radar (KBOX), 121 km from the middle of the area, began a volume at 22:14 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
Jun 2, 11:33 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.2 hours before the alert went out and 126 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: 487 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

724 
WUUS51 KBOX 022213
SVRBOX
CTC003-013-MAC013-022300-
/O.NEW.KBOX.SV.W.0021.130602T2213Z-130602T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
613 PM EDT SUN JUN 2 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

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

* UNTIL 700 PM EDT

* AT 610 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED NEAR EAST GRANBY...OR 4 MILES
  NORTHWEST OF WINDSOR LOCKS...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EAST LONGMEADOW...AGAWAM...LONGMEADOW...ENFIELD...HAMPDEN...
  MONSON...SOMERS AND SUFFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHILE NOT IMMEDIATELY LIKELY...THESE STORMS MAY PRODUCE A SHORT LIVED
TORNADO. MOVE TO A SAFE PLACE NOW IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

MINOR FLOODING CAN BE EXPECTED FROM TORRENTIAL RAINFALL. DO NOT DRIVE
THROUGH FLOODED ROADS.

&&

LAT...LON 4194 7278 4203 7276 4208 7269 4213 7219
      4196 7236
TIME...MOT...LOC 2213Z 251DEG 22KT 4198 7272 

$$

SIPPRELL

2 follow-up statements

887 
WWUS51 KBOX 022236
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
636 PM EDT SUN JUN 2 2013

CTC003-013-022246-
/O.CAN.KBOX.SV.W.0021.000000T0000Z-130602T2300Z/
HARTFORD CT-TOLLAND CT-
636 PM EDT SUN JUN 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HARTFORD AND
NORTHERN TOLLAND COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4209 7255 4213 7219 4203 7229 4203 7243
      4204 7243 4204 7254
TIME...MOT...LOC 2236Z 251DEG 22KT 4203 7254 

$$

MAC013-022300-
/O.CON.KBOX.SV.W.0021.000000T0000Z-130602T2300Z/
HAMPDEN MA-
636 PM EDT SUN JUN 2 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHEASTERN HAMPDEN COUNTY...

AT 632 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR LONGMEADOW...OR 6 MILES SOUTH OF SPRINGFIELD...MOVING
EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
EAST LONGMEADOW...HAMPDEN AND MONSON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHILE NOT IMMEDIATELY LIKELY...SHORT LIVED TORNADOES ARE POSSIBLE IN
ADDITION TO SIGNIFICANT WIND DAMAGE. MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

THIS STORM WAS ALSO PRODUCING FREQUENT LIGHTNING. GO INDOORS
IMMEDIATELY. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. WAIT UNTIL AT LEAST 30 MINUTES AFTER THE STORM
ENDS TO RESUME OUTDOOR ACTIVITIES.

&&

LAT...LON 4209 7255 4213 7219 4203 7229 4203 7243
      4204 7243 4204 7254
TIME...MOT...LOC 2232Z 251DEG 22KT 4203 7254 

$$

SIPPRELL

453 
WWUS51 KBOX 022250
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
650 PM EDT SUN JUN 2 2013

MAC013-022300-
/O.EXP.KBOX.SV.W.0021.000000T0000Z-130602T2300Z/
HAMPDEN MA-
650 PM EDT SUN JUN 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HAMPDEN COUNTY
WILL EXPIRE AT 700 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4209 7255 4213 7219 4203 7229 4203 7243
      4204 7243 4204 7254
TIME...MOT...LOC 2250Z 251DEG 22KT 4203 7254 

$$

SIPPRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 5:24 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	51 min
Jun 2, 6:27 PM EDT	Severe Thunderstorm Warning	BOX		48 min
Jun 2, 6:31 PM EDT	Special Weather Statement	BOX		44 min
Jun 2, 6:35 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	55 min
Jun 2, 6:54 PM EDT	Special Weather Statement	BOX		51 min
Jun 2, 3:10 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	65 min
Jun 2, 3:34 PM EDT	Special Weather Statement	BOX	Hampden	41 min
Jun 2, 3:48 PM EDT	Special Weather Statement	BOX	Hampden, Hampshire	42 min
Jun 2, 4:19 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	41 min
Jun 2, 4:41 PM EDT	Areal Flood Advisory	BOX	Hampden	3 hr
Jun 2, 4:50 PM EDT	Special Weather Statement	BOX	Hampden	55 min
Jun 2, 5:42 PM EDT	Special Weather Statement	BOX	Hampden, Hampshire	63 min
Jun 2, 6:05 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	40 min
Jun 2, 6:36 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	39 min
Jun 2, 6:46 PM EDT	Special Weather Statement	BOX	Hampshire	44 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2013 Severe Thunderstorm Warnings in Massachusetts, 2013 Every severe thunderstorm warning in 2013

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.