Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 38, NWS Boston/Norton, MA

July 7, 1997Norfolk County, Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 7, 1997, 3:41 PM EDT for Norfolk County, Plymouth County, Massachusetts. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 7, 1997, 3:41 PM EDT (19:41 UTC)
Expired
Jul 7, 1997, 4:45 PM EDT
In force
64 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

Counties Norfolk County, MA, Plymouth County, MA

The radar

The Boston radar (KBOX), 20 km from the middle of the area, began a volume at 19:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 7, 1:30 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 7.7 hours before the alert went out and 94 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, Chatham, MA at 12:00Z on 1997-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 1997-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
19 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
1460 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
-7 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 071940 RRA
SVRBOS
MAC021-023-072045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
341 PM EDT MON JUL 7 1997
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST MASSACHUSETTS
 
   ...EASTERN NORFOLK COUNTY
 
AND THE ADJACENT COASTAL WATERS.
 
 
IN SOUTHEAST MASSACHUSETTS
 
   ...NORTHERN PLYMOUTH COUNTY
 
AND THE ADJACENT COASTAL WATERS.
 
AT 340 PM...WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS
CONTINUING TO MOVE THROUGH EASTERN NORFOLK COUNTY. THESE STORMS WILL
MOVE EAST ACROSS EASTERN NORFOLK COUNTY...AND NORTHERN PLYMOUTH COUNTY
THROUGH AFFECTING AN AREA FROM CANTON EAST THROUGH HINGHAM AND COHASSET
BY 430 PM.   DIME SIZE HAIL HAS BEEN REPORTED WITH THESE STORMS ALONG
WITH WIND GUSTS TO 45 MPH.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
DRV/EVT
 
&

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

Local storm report, Jul 7, 12:52 PM EDT, 2 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
1252 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   0.75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

JL
Local storm report, Jul 7, 12:53 PM EDT, 2 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
1252 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   0.75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

JL
Local storm report, Jul 7, 2:51 PM EDT, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
251 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   .75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

0220 PM    RICHMOND                  NH   LIGHTNING
07/07/97   CHESHIRE                       *** 1 INJ ***
                                          PERSON STRUCK BY LIGHTNING

0240 PM    NORTHBRIDGE               MA   .75 INCH HAIL
07/07/97   WORCESTER                      PER SKYWARN SPOTTER

0243 PM    UPTON                     MA   .88 INCH HAIL
07/07/97   WORCESTER                      PER UPTON POLICE DEPT

JL
Local storm report, Jul 7, 2:55 PM EDT, 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
251 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   .75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

0220 PM    RICHMOND                  NH   LIGHTNING
07/07/97   CHESHIRE                       *** 1 INJ ***
                                          PERSON STRUCK BY LIGHTNING

0240 PM    NORTHBRIDGE               MA   .75 INCH HAIL
07/07/97   WORCESTER                      PER SKYWARN SPOTTER

0243 PM    UPTON                     MA   .88 INCH HAIL
07/07/97   lWORCESTER                      PER UPTON POLICE DEPT

JL
Local storm report, Jul 7, 3:15 PM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
315 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   .75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

0220 PM    RICHMOND                  NH   LIGHTNING
07/07/97   CHESHIRE                       *** 1 INJ ***
                                          PERSON STRUCK BY LIGHTNING

0240 PM    NORTHBRIDGE               MA   .75 INCH HAIL
07/07/97   WORCESTER                      PER SKYWARN SPOTTER

0243 PM    UPTON                     MA   .88 INCH HAIL
07/07/97   WORCESTER                      PER UPTON POLICE DEPT

0253 PM    NORFOLK                   MA   .75 INCH HAIL
07/07/97   NORFOLK                        PER NORFOLK POLICE DEPT

0310 PM    WALPOLE                   MA   .75 INCH HAIL
07/07/97   NORFOLK                        PER HAM RADIO NETWORK

JL
Local storm report, Jul 7, 3:17 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
315 PM EDT MON JUL 7 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1226 PM    SOUTH HADLEY              MA   .75 INCH HAIL
07/07/97   HAMPSHIRE                      CONTINUING THROUGH 1240 PM

0220 PM    RICHMOND                  NH   LIGHTNING
07/07/97   CHESHIRE                       *** 1 INJ ***
                                          PERSON STRUCK BY LIGHTNING

0240 PM    NORTHBRIDGE               MA   .75 INCH HAIL
07/07/97   WORCESTER                      PER SKYWARN SPOTTER

0243 PM    UPTON                     MA   .88 INCH HAIL
07/07/97   WORCESTER                      PER UPTON POLICE DEPT

0253 PM    NORFOLK                   MA   .75 INCH HAIL
07/07/97   NORFOLK                        PER NORFOLK POLICE DEPT

0310 PM    WALPOLE                   MA   .75 INCH HAIL
07/07/97   NORFOLK                        PER HAM RADIO NETWORK

JL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 12:30 PM EDTSevere Thunderstorm WarningBOXHampshire60 min
Jul 7, 12:40 PM EDTSevere Thunderstorm WarningBOXHampden65 min
Jul 7, 2:42 PM EDTSevere Thunderstorm WarningBOXNorfolk, Worcester63 min
Jul 7, 3:56 PM EDTSevere Thunderstorm WarningBOXWorcester64 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1997Every severe thunderstorm warning in 1997

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.