Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 39, NWS Boston/Norton, MA

July 7, 1994Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 7, 1994, 6:56 PM EDT for Hampshire County, Massachusetts. It was in force for 64 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1994, 6:56 PM EDT (22:56 UTC)
Expired: Jul 7, 1994, 8:00 PM EDT
In force: 64 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

County Hampshire County, MA

The nearest sounding before it

Albany, NY (KALB), launched 12:00Z, 10.9 hours before the alert went out and 103 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: 1165 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 657 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 38 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 072257
SVRBOS
MAC015-080000-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
656 PM EDT THU JUL 7 1994
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST MASSACHUSETTS
 
   ...HAMPSHIRE COUNTY
 
AT 650 PM WEATHER RADAR INDICATED THUNDERSTORMS RAPIDLY DEVELOPING IN
HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...BETWEEN NORTHAMPTON AND
AMHERST. THESE STORMS HAVE HAD A HISTORY OF PRODUCING TORRENTIAL
RAINS...LARGE HAIL AND DAMAGING WINDS.
 
THE STORMS WERE MOVING SLOWLY EAST NEAR 10 MPH AND WILL CONTINUE TO
AFFECT HAMPSHIRE COUNTY THROUGH 8 PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICVKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
VALLEE

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 7, 4:51 PM EDT, 2 hours 5 minutes before

MAZALL-RIZALL-CTZALL-MAZ501>504-RIZ501-080000-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE TAUNTON MA
441 PM EDT THU JUL 7 1994

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR CENTRAL AND
WESTERN MASSACHUSETTS...THE NORTHERN HALF OF RHODE ISLAND...AND ALL OF
CONNECTICUT UNTIL 10 PM...

THE SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MASSACHUSETTS FROM
BRISTOL AND NORFOLK COUNTIES WESTWARD...PROVIDENCE AND KENT COUNTIES
IN CENTRAL AND NORTHERN RHODE ISLAND...AND ALL OF CONNECTICUT.

THOUGH THUNDERSTORMS IN EASTERN MASSACHUSETTS WERE SUBSIDING...
ANOTHER AREA OF THUNDERSTORMS WAS RAPIDLY DEVELOPING IN EASTERN NEW
YORK FROM ALBANY SOUTH TO POUGHKEEPSIE.  THESE STORMS WILL MOVE EAST
INTO WESTERN CONNECTICUT AND MASSACHUSETTS BETWEEN 5 AND 6 PM...AND
SOME MAY BECOME SEVERE AS THEY MOVE INTO THE HOT AND HUMID AIRMASS IN
PLACE ACROSS THE REGION.

SEVERE THUNDERSTORMS CAN PRODUCE A COMBINATION OF LARGE HAIL AND
LDAMAGING WINDS.  ALL THUNDERSTORMS PRODUCE DANGEROUS LIGHTNING.
ANYONE WITH OUTDOOR ACTIVITIES IN SOUTHERN NEW ENGLAND SHOULD KEEP A
CLOSE WATCH ON THE SKIES AND BE READY TO HEAD INSIDE QUICKLY.

VALLEE

Local storm report, Jul 7, 5:24 PM EDT, 1 hour 32 minutes before

LOCAL STORM REPORT...UPDATED
NATIONAL WEATHER SERVICE TAUNTON MA
523 PM EDT THU JUL 7 1994

TIME(EDT)  TOWN           COUNTY      REPORT

12:52 PM   N.EASTON       BRISTOL     WIND GUST TO 47 MPH (SPOTTER)

 1:12 PM   EASTON         BRISTOL     WIND GUST TO 57 MPH AND DIME
                                      SIZE HAIL (SPOTTER)

 1:15 PM   EASTON         BRISTOL     GOLF BALL SIZE HAIL (POLICE)

 1:45 PM   BROCKTON       PLYMOUTH    DIME SIZE HAIL (SPOTTER)

 1:51 PM   WESTBORO       WORCESTER   DIME SIZE HAIL (OFF DUTY NWS
                                      PERSONNEL)

 1:58 PM   WESTBORO       WORCESTER   PEA TO DIME SIZE HAIL (SPOTTER)
>
TIME(EDT)  TOWN          COUNTY      REPORT

 2:02 PM   WESTBORO      WORCESTER   PEA TO DIME SIZE HAIL AND
                                     LARGE TREES DOWN (SPOTTER)

 2:15 PM  TOWNSEND       MIDDLESEX   TREES DOWN (SPOTTER)

 2:15 -   WESTBORO       WORCESTER   NUMEROUS TREES...UP TO 4 FEET
 2:25 PM                             IN DIAMETER DOWN, NUMEROUS POWER
                                     LINES DOWN, STOREFRONT WINDOWS
                                     BLOWN IN, TREES UP TO 100 FT HIGH
                                     STRIPPED OF BARK (FROM NWS SURVEY)

 2:33 PM  MILFORD        WORCESTER   NICKLE SIZE HAIL (OFF DUTY NWS
                                     PERSONNEL)

 2:50 PM  MEDWAY         NORFOLK     GOLF BALL SIZE HAIL AND HIGH
                                     WINDS (POLICE)

 3:22 PM  N ATTLEBORO    BRISTOL     TREES DOWN
ADDITIONAL REPORTS WILL BE INCLUDED AS APPROPRIATE.

THOMPSON/WFO TAUNTON

Special weather statement, Jul 7, 5:43 PM EDT, 1 hour 13 minutes before

MAZ002-003-004-008-010-072245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
542 PM EDT THU JUL 7 1994

...A SEVERE THUNDERSTORM WATCH CONTINUES ACROSS MUCH OF MASSACHUSETTS...

THUNDERSTORMS WERE RAPIDLY INTENSIFYING IN FRANKLIN COUNTY...BETWEEN
SHELBURNE FALLS TO ERVING.  THESE STORMS MAY PRODUCE HEAVY RAINS AS WELL
AS HAIL AND GUSTY WINDS AS THEY CONTINUE EAST TOWARD ATHOL IN NORTHWEST
WORCESTER COUNTY BY 600 PM.

OTHER THUNDERSTORMS WERE DEVELOPING IN EASTERN CONNECTICUT...WITH OTHER
STORMS MOVING FROM THE BERKSHIRES TOWARD WESTERN HAMPSHIRE AND HAMPDEN
COUNTY.  ANY OF THESE STORMS COULD PRODUCE GUSTY WINDS...HAIL AND
TORRENTIAL RAINFALL AS THEY MOVE SLOWLY EAST AND0 NORTHEAST.

ANYONE OUTSIDE SHOULD BE READY TO HEAD INSIDE AS THESE STORMS APPROACH.

VALLEE

Special weather statement, Jul 7, 5:44 PM EDT, 1 hour 12 minutes before

CTZ004-072300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
540 PM EDT THU JUL 07 1994

...THUNDERSTORM OVER SOUTHERN WINDHAM COUNTY...

AT 540 PM RADAR INDICATED A THUNDERSTORM OVER SOUTHERN WINDHAM COUNTY
IN CONNECTICUT.  THE THUNDERSTORM IS MOVING TO THE SOUTHEAST AT 15 MPH
AND WILL ENTER RHODE ISLAND BY 630 PM.  THIS THUNDERSTORM CAN PRODUCE
TORRENTIAL RAINS AND STREET FLOODING...DANGEROUS LIGHTNING...AND GUSTY
WINDS.

S.TAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TELEVISION
STATION FOR LATER UPDATES.

PIERCE

Special weather statement, Jul 7, 6:25 PM EDT, 31 minutes before

CTZALL-080000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
625 PM EDT THU JUL 07 1994

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF
CONNECTICUT...

THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF CONNECTICUT
UNTIL 1000 PM.  AT 625 PM RADAR INDICATED A LINE OF THUNDERSTORMS IN
EASTERN NEW YORK STATE.  THIS LINE OF THUNDERSTORMS IS MOVING SLOWLY
TO THE SOUTHEAST TOWARDS CONNECTICUT.  THE THUNDERSTORMS WILL ENTER
WESTERN LITCHFIELD COUNTY BETWEEN 645 PM AND 715 PM.  THESE
THUNDERSTORMS CAN PRODUCE TORRENTIAL RAINS...DANGEROUS
LIGHTNING...GUSTY WINDS...AND HAIL.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TELEVISION
STATION FOR LATER UPDATES.

PIERCE

Special weather statement, Jul 7, 6:28 PM EDT, 28 minutes before

CTZALL-080000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
625 PM EDT THU JUL 07 1994

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF
CONNECTICUT...

THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF CONNECTICUT
UNTIL 1000 PM.  AT 625 PM RADAR INDICATED A LINE OF THUNDERSTORMS IN
EASTERN NEW YORK STATE.  THIS LINE OF THUNDERSTORMS IS MOVING SLOWLY
TO THE SOUTHEAST TOWARDS CONNECTICUT.  THE THUNDERSTORMS WILL ENTER
WESTERN LITCHFIELD COUNTY BETWEEN 645 PM AND 715 PM.  THESE
THUNDERSTORMS CAN PRODUCE TORRENTIAL RAINS...DANGEROUS
LIGHTNING...GUSTY WINDS...AND HAIL.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TELEVISION
STATION FOR LATER UPDATES.

PIERCE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 1:16 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	59 min
Jul 7, 1:27 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk	63 min
Jul 7, 1:37 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex	68 min
Jul 7, 1:45 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	30 min
Jul 7, 2:11 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	64 min
Jul 7, 2:11 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	49 min
Jul 7, 2:28 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk	62 min
Jul 7, 2:41 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex	64 min
Jul 7, 3:12 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	63 min
Jul 7, 5:45 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	60 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1994 Every severe thunderstorm warning in 1994

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.