Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS Boston/Norton, MA

August 11, 1992Franklin County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 11, 1992, 4:55 PM EDT for Franklin County, Worcester County, Massachusetts. It was in force for .

The area

The counties it named.

The facts

Issued
Aug 11, 1992, 4:55 PM EDT (20:55 UTC)
Expired
Aug 11, 1992, 4:55 PM EDT
In force
Issued by
NWS Boston/Norton, MA
Area
Whole counties

Counties Franklin County, MA, Worcester County, MA

The nearest sounding before it

Albany, NY (KALB), launched 12:00Z, 8.9 hours before the alert went out and 132 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 1992-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 78 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 1992-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
78 J/kg
Mixed-layer CIN
-227 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Aug 11, 3:27 PM EDT, 1 hour 28 minutes before
RIZALL-112100-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE PROVIDENCE RI
325 PM EDT SUN AUG 9 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR RHODE ISLAND...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF RHODE ISLAND
INCLUDING NARRAGANSETT BAY AND THE ADJACENT COASTAL WATERS UNTIL 9 PM
TONIGHT.

A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE RIGHT FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS...LARGE HAIL
AND DEADLY LIGHTNING.  IF SEVERE WEATHER SHOULD DEVELOP...WARNINGS
WILL BE ISSUED.

AT 315 PM WEATHER SERVICE RADAR INDICATED DEVELOPING THUNDERSTORMS ALONG
THE NORTHERN RHODE ISLAND...MASSACHUSETTS BORDER NEAR BURRILLVILLE AND
CUMBERLAND. A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED EAST OF
HARTFORD CONNECTICUT.  SMALL HAIL WAS REPORTED WITH THIS THUNDERSTORM
IN WATERBURY CONNECTICUT.

ALL OF THE THUNDERSTORMS WERE MOVING EAST AROUND 20 MPH AND MAY BEGIN
TO EFFECT PARTS OF WE0STERN RHODE ISLAND BY 400 PM.

IF THREATENING WEATHER APPROACHES....HEAD INDOORS FOR SHELTER.

SISSON
Special weather statement, Aug 11, 3:47 PM EDT, 1 hour 8 minutes before
RIZALL-112100-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PROVIDENCE RI
325 PM EDT TUE AUG 11 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR RHODE ISLAND...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF RHODE ISLAND
INCLUDING NARRAGANSETT BAY AND THE ADJACENT COASTAL WATERS UNTIL 9 PM
TONIGHT.

A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE RIGHT FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS...LARGE HAIL
AND DEADLY LIGHTNING.  IF SEVERE WEATHER SHOULD DEVELOP...WARNINGS
WILL BE ISSUED.

AT 315 PM WEATHER SERVICE RADAR INDICATED DEVELOPING THUNDERSTORMS ALONG
THE NORTHERN RHODE ISLAND...MASSACHUSETTS BORDER NEAR BURRILLVILLE AND
CUMBERLAND. A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED EAST OF
HARTFORD CONNECTICUT.  SMALL HAIL WAS REPORTED WITH THIS THUNDERSTORM
IN WATERBURY CONNECTICUT.

ALL OF THE THUNDERSTORMS WERE MOVING EAST AROUND 20 MPH AND MAY BEGIN
TO pEFFECT PARTS OF WESTERN RHODE ISLAND BY 400 PM.

IF THREATENING WEATHER APPROACHES....HEAD INDOORS FOR SHELTER.

SISSON
Special weather statement, Aug 11, 3:47 PM EDT, 1 hour 8 minutes before
MAZ001>004-007>009-112200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOSTON MA
346 PM EDT TUE AUG 11 1992

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF
MASSACHUSETTS WITH THE EXCEPTION OF NANTUCKET ISLAND AND THE NORTHWEST
CORNER OF THE BAY STATE...

SO FAR...SEVERE WEATHER IN THE FORM OF LARGE HAIL HAS BEEN CONFINED
TO SOUTHWEST CONNECTICUT.  NO SEVERE WEATHER HAS BEEN REPORTED IN
MASSACHUSETTS.

AT 345 PM...RADAR INDICATED SEVERAL LINES OF SHOWERS AND THUNDERSTORMS
ACROSS THE SOUTHEAST THIRD OF MASSACHUSETTS.  STRONGEST STORMS WERE
LOCATED OVER SOUTHERN NORFOLK COUNTY FROM NEAR SCITUATE TO FOXBORO AND
WRENTHAM TO NEAR THE NORTHERN RHODE ISLAND BORDER.

A SHORTER LINE OF STORMS WAS MIDWAY BETWEEN WORCESTER AND BOSTON.

SHOWERS AND THUNDERSTORMS WERE DRIFTING EAST TO SOUTHEAST.

VERY HEAVY RAIN...LIGHTNING STRIKES AND SMALL HAIL MAY OCCUR AS THE
STORMS PASS THROUGH THE WEST AND SOUTHERN PARTS OF THE BOSTON METRO
AREA AS WELL AS SOUTHEAST MASSACHUSETTS LATE THIS AFTERNOON.

BE ALERT FOR THREATENING WEATHER.  A SEVERE THUNDERSTORM WATCH MEANS
THAT CONDITIONS ARE RIPE FOR THE DEVELOPMENT OF THUNDERSTORMS...WITH
THE POTENTIAL FOR DAMAGING WINDS ANrD HAIL. IF SEVERE WEATHER SHOULD
DEVELOP...A SEVERE THUNDERSTORM WARNING WILL BE ISSUED.

THE NEXT STATEMENT ON THIS POTENTIALLY DANGEROUS WEATHER SITUATION
WILL BE ISSUED BY 445 PM.

DRAG
Special weather statement, Aug 11, 4:05 PM EDT, 50 minutes before
RIZALL-112200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PROVIDENCE RI
404 PM EDT TUE AUG 11 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR RHODE ISLAND...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF RHODE ISLAND
INCLUDING NARRAGANSETT BAY AND THE ADJACENT COASTAL WATERS UNTIL 900 PM
TONIGHT.

AT 403 PM WEATHER SERVICE RADAR INDICATED A DEVELOPING LINE OF
THUNDERSTORMS FROM JUST SOUTH OF BOSTON TO NEAR NEW HAVEN CONNECTICUT.
THE STRONGEST STORM WAS LOCATED NEAR DANIELSON CONNECTICUT.
ANOTHER STRONG STORM WAS FORMING NEAR FOSTER RHODE ISLAND.  THESE
STORMS HAVE PRODUCED HAIL IN CONNECTICUT AND WERE MOVING EAST AT
20 MPH.

THESE THUNDERSTORMS WILL MOVE ACROSS PROVIDENCE COUNTY BETWEEN 400 PM AND
500 PM.

IF THREATENING WEATHER APPROACHES....TAKE COVER AND REPORT ANY
SEVERE WEATHER OCCURENCES TO YOUR LOCAL POLICE.

SISSON
Special weather statement, Aug 11, 4:35 PM EDT, 20 minutes before
MAZALL-CTZALL-112200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOSTON MA
435 PM EDT TUE AUG 11 1992

...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR MOST OF
MASSACHUSETTS NORTH OF A QUINCY...FRANKLIN LINE AS WELL AS PARTS OF
NORTHWEST CONNECTICUT...

THE FOLLOWING COUNTIES ARE NO LONGER IN THE WATCH....ESSEX...
MIDDLESEX...SUFFOLK... ALL BUT THE EXTREME SOUTH PART OF NORFOLK
COUNTY AS WELL AS WORCESTER...FRANKLIN...HAMPSHIRE...BERKSHIRE AND
HAMPDEN COUNTIES AS WELL AS LITCHFIELD AND HARTFORD COUNTIES OF
NORTHWEST CONNECTICUT.

THE WATCH REMAINED IN EFFECT FOR BRISTOL...PLYMOUTH...BARNSTABLE...
EXTREME SOUTHERN NORFOLK COUNTY AND DUKES COUNTIES OF SOUTHEAST
MASSACHUSETTS...AS WELL AS ALL OF RHODE ISLAND AND THE REMAINDER OF
SOUTHEAST CONNECTICUT.

A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING FOR EASTERN PLYMOUTH
COUNTY EXPIRED AT 430 PM.

STRONGEST THUNDERSTORMS AT 433 PM WERE OVER SOUTHEAST CONNECTICUT
AS WELL A A PORTION OF NORTHERN RHODE ISLAND AND EXTREME SOUTHEAST
NORFOLK COUNTY MASSACHUSETTS NEAR RANDOLPH INTO NORTHERN PLYMOUTH
COUNTY.

THE NEXT STATEMENT ON THIS SITUATION WILL BE ISSUED AROUND 455 PM.

DRAG
Special weather statement, Aug 11, 4:53 PM EDT, 2 minutes before
MAZ002-003-007-009-112200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOSTON MA
453 PM EDT TUE AUG 11 1992

...A SEVERE THUNDERSTORM REMAINED IN EFFECT UNTIL 9 PM EDT FOR A
PORTION OF SOUTHEAST MASSACHUSETTS INCLUDING
BRISTOL...PLYMOUTH...BARNSTABLE AND DUKES COUNTIES AS WELL AS ALL OF
RHODE ISLAND AND SOUTHEAST CONNECTICUT...

SURFACE REPORTS AND RADAR NEAR 445 PM SHOWED THE STRONGEST STORMS IN
MASSACHUSETTS SOUTH OF QUINCY NEAR WEYMOUTH...BRAINTREE AND HOLBROOK
INTO FAR NORTHERN PLYMOUTH COUNTY.  STORMS WERE MOVING VERY SLOWLY
WITH THE VERY HEAVY RAIN CAUSING PONDING OF WATER ON ROADS JUST TO THE
SOUTH OF BOSTON.

THERE WERE SEVERAL REPORTS OF LIGHTNING STRIKES ALONG THE NORTH RSHORE
EARLIER THIS AFTERNOON WHILE SEVERAL OF BOSTONS SOUTHERN SUBURBS
BETWEEN 330 AND 430 PM REPORTED LIGHTNING STRIKES AND SMALL HAIL.

THE NEXT STATEMENT ON THIS SITUATION WILL BE ISSUED AROUND 530 PM.

DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 3:59 PM EDTSevere Thunderstorm WarningBOXPlymouth31 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1992Every severe thunderstorm warning in 1992

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.