Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 34, NWS Boston/Norton, MA

August 3, 2004Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 3, 2004, 1:57 PM EDT for Hampden County, Massachusetts. It was in force for 63 min. 6 reports 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
Aug 3, 2004, 1:57 PM EDT (17:57 UTC)
Expired
Aug 3, 2004, 3:00 PM EDT
In force
63 min
Issued by
NWS Boston/Norton, MA
Area
Counties, with a storm outline in the text

County Hampden County, MA

The radar

The Boston radar (KBOX), 123 km from the middle of the area, began a volume at 17:57 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
Aug 3, 2:11 PM EDTHAIL 0.75Wilbraham, MA
Aug 3, 2:11 PM EDTHAIL 0.75Wilbraham, MA
Aug 3, 2:17 PM EDTTSTM WND DMGWest Springfield, MATWO LARGE TREES FELL DOWN TAKING WIRES DOWN WITH THEM. ONE LARGE TREE FELL ON A HOUSE CAUSING DAMAGE TO THE HOUSE.
Aug 3, 2:17 PM EDTTSTM WND DMGWest Springfield, MATWO LARGE TREES FELL DOWN TAKING WIRES DOWN WITH THEM. ONE LARGE TREE FELL ON A HOUSE CAUSING DAMAGE TO THE HOUSE.
Aug 3, 2:17 PM EDTHAIL 0.75West Springfield, MA
Aug 3, 2:17 PM EDTHAIL 0.75West Springfield, MA

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 12:00Z, 6.0 hours before the alert went out and 118 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 2004-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 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, Albany, NY at 12:00Z on 2004-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
294 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBOX 031757
SVRBOX
MAC013-031900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
157 PM EDT TUE AUG 3 2004

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HAMPDEN COUNTY IN WESTERN MASSACHUSETTS
  THIS INCLUDES THE CITIES OF...SPRINGFIELD...CHICOPEE

* UNTIL 300 PM EDT

* AT 153 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  SPRINGFIELD...AND MOVING EAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LUDLOW BY 210 PM EDT
  WILBRAHAM BY 215 PM EDT

LAT...LON 4216 7276 4203 7265 4207 7238 4222 7249

$$

FRANK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 2:12 PM EDTFlash Flood WarningBOXHampden2 hr

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2004Every severe thunderstorm warning in 2004

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.