Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 29, NWS Boston/Norton, MA

July 8, 1996Middlesex County, Worcester County, Massachusetts; Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 8, 1996, 4:09 PM EDT for Middlesex County, Worcester County, Massachusetts; Hillsborough County, New Hampshire. It was in force for 66 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 8, 1996, 4:09 PM EDT (20:09 UTC)
Expired: Jul 8, 1996, 5:15 PM EDT
In force: 66 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

Counties Middlesex County, MA, Worcester County, MA, Hillsborough County, NH

The radar

The Boston radar (KBOX), 83 km from the middle of the area, began a volume at 20:11 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

Time	Report	Where	Remark
Jul 8, 4:15 PM EDT	Hail 0.75	Athol, MA
Jul 8, 4:29 PM EDT	Hail 1	Athol, MA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 8.2 hours before the alert went out and 173 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: 81 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 80 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 
TTAA00 KBOS 082009
SVRBOS
MAC017-027-NHC011-082115-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
409 PM EDT MON JUL 8 1996
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  MASSACHUSETTS
 
   ...NORTHERN MIDDLESEX COUNTY
 
IN CENTRAL MASSACHUSETTS
 
   ...NORTHERN WORCESTER COUNTY
 
 
IN SOUTH NEW HAMPSHIRE
 
   ...SOUTHERN HILLSBOROUGH COUNTY
 
AT 405 PM...WEATHER RADAR CONTINUED TO SHOW SEVERE THUNDERSTORMS FROM
CENTRAL FRANKLIN COUNTY EAST ACROSS NORTHERN WORCESTER INTO SOUTHEAST
CHESHIRE COUNTY. SPOTTERS HAVE REPORTED NICKLE SIZE HAIL IN RINDGE IN
SOUTHEAST CHESHIRE COUNTY.
 
NUMEROUS REPORTS OF HAIL HAVE ALSO BEEN RECEIVED ACROSS FRANKLIN COUNTY
FROM COLRAIN THROUGH WARWICK...OF PEA TO DIME SIZE HAIL.
 
THESE STORMS WILL CONTINUE EAST THROUGH NORTHERN WORCESTER...SOUTHERN
HILLSBOROUGH AND NORTHERN MIDDLESEX COUNTIES...ALONG THE MASSACHUSETTS
NEW HAMPSHIRE BORDER THROUGH 5 PM.
 
IF THREATENING WEATHER APPROACHES...GO TO A SAFE PLACE IMMEDIATELY.
IF SEVERE WEATHER OCCURS...ASK YOUR NEAREST LAW ENFORCEMENT AGENCY TO
RELAY YOUR SEVERE WEATHER REPORT TO THE NATIONAL WEATHER SERVICE.
 
DRV/RMT
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 3:35 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	40 min
Jul 8, 3:45 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	45 min
Jul 8, 5:39 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	51 min
Jul 8, 6:06 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex	69 min
Jul 8, 7:11 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	49 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1996 Severe Thunderstorm Warnings in New Hampshire, 1996 Every severe thunderstorm warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.