Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 32, NWS Boston/Norton, MA

September 23, 2003Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 23, 2003, 11:12 AM EDT for Hampden County, Massachusetts. It was in force for 48 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: Sep 23, 2003, 11:12 AM EDT (15:12 UTC)
Expired: Sep 23, 2003, 12:00 PM EDT
In force: 48 min
Issued by: NWS Boston/Norton, MA
Area: Counties, with a storm outline in the text

County Hampden County, MA

The radar

The Albany radar (KENX), 126 km from the middle of the area, began a volume at 15:12 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

Brookhaven, NY (KOKX), launched 12:00Z, 3.2 hours before the alert went out and 144 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: 101 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 639 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 374 m²/s²
0-3 km storm-relative helicity: 394 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBOX 231513
SVRBOX
MAC013-231600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1112 AM EDT TUE SEP 23 2003

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL HAMPDEN COUNTY IN WESTERN MASSACHUSETTS
    INCLUDING SPRINGFIELD...CHICOPEE

* UNTIL NOON.

* AT 1106 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 8 MILES WEST OF NORTHAMPTON TO
  12 MILES EAST OF TORRINGTON...MOVING EAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WESTFIELD AND SOUTHWICK AROUND 1120 AM
  WEST SPRINGFIELD AROUND 1130 AM
  CHICOPEE AND AGAWAM AROUND 1135 AM
  LONGMEADOW AROUND 1140 AM
  SPRINGFIELD...LUDLOW AND EAST LONGMEADOW AROUND 1145 AM
  WILBRAHAM AROUND 1155 AM.

SEVERE THUNDERSTORMS PRODUCE WINDS STRONG ENOUGH TO KNOCK DOWN TREES
AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM WINDOWS.

$$

LAT...LON 4225 7286 4217 7272 4221 7268 4221 7244
          4219 7235 4208 7235 4204 7256 4203 7276
          4206 7294

BELK/FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 23, 10:40 AM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	13 hr
Sep 23, 12:04 PM EDT	Flash Flood Warning	BOX	Hampden, Hampshire	116 min
Sep 23, 5:04 PM EDT	Special Marine Warning	BOX		41 min
Sep 23, 5:04 PM EDT	Special Marine Warning	BOX		41 min
Sep 23, 5:06 PM EDT	Special Marine Warning	BOX		21 hr
Sep 23, 5:06 PM EDT	Special Marine Warning	BOX		21 hr
Sep 23, 7:03 PM EDT	Special Marine Warning	BOX		42 min
Sep 23, 7:03 PM EDT	Special Marine Warning	BOX		21 hr

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2003 Every severe thunderstorm warning in 2003

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.