Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 21, NWS Boston/Norton, MA

June 20, 2006Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 20, 2006, 1:20 PM EDT for Worcester County, Massachusetts. It was in force for 40 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 20, 2006, 1:20 PM EDT (17:20 UTC)
Expired: Jun 20, 2006, 2:00 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA
Area: Counties, with a storm outline in the text

County Worcester County, MA

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 20, 12:12 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 5.3 hours before the alert went out and 159 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: 16 J/kg
Mixed-layer CIN: -189 J/kg
Mixed-layer LCL: 1198 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBOX 201721
SVRBOX
MAC027-201800-
/O.NEW.KBOX.SV.W.0021.060620T1720Z-060620T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
120 PM EDT TUE JUN 20 2006

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS

* UNTIL 200 PM EDT

* AT 115 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES WEST OF STURBRIDGE...OR ABOUT 17 MILES
  EAST OF SPRINGFIELD...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  STURBRIDGE BY 135 PM EDT
  SOUTHBRIDGE BY 140 PM EDT
  CHARLTON BY 145 PM EDT
  DUDLEY BY 155 PM EDT
  WEBSTER...OXFORD AND 9 MILES SOUTH OF AUBURN BY 200 PM EDT

THIS STORM HAS HAD A HISTORY OF PRODUCING NICKEL SIZE HAIL IN 
CHICOPEE ALONG WITH BLOWING DOWN BRANCHES.  PEOPLE IN THE PATH
OF THIS STORM SHOULD HEAD TO A SAFE SHELTER NOW.

LAT...LON 4220 7216 4204 7217 4203 7183 4227 7184

$$
DRV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 7:42 AM EDT	Special Marine Warning	BOX		52 days
Jun 20, 7:50 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable	40 min
Jun 20, 12:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	60 min
Jun 20, 3:14 PM EDT	Special Marine Warning	BOX		51 days
Jun 20, 5:32 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	43 min
Jun 20, 5:51 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	54 min
Jun 20, 6:58 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	62 min
Jun 20, 7:49 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	41 min
Jun 20, 7:53 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	52 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2006 Every severe thunderstorm warning in 2006

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.