Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 63, NWS Boston/Norton, MA

August 5, 1994Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 5, 1994, 2:33 PM EDT for Plymouth County, Massachusetts. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Aug 5, 1994, 2:33 PM EDT (18:33 UTC)
Expired
Aug 5, 1994, 3:15 PM EDT
In force
42 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Plymouth County, MA

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 6.6 hours before the alert went out and 73 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 1994-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1240 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 1994-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
1240 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
902 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-31 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 051835 RRA
SVRBOS
MAC023-051915-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
233 PM EDT FRI AUG 5 1994
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  MASSACHUSETTS
 
   ...PLYMOUTH COUNTY
 
AND THE ADJACENT COASTAL WATERS.
 
 
AT 240 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTO
OVER EAST TAUNTON. MOVEMENT OF THIS STORM WAS EAST AT 30 MPH. THIS
THUNDERSTORM WILL AFFECT BRIDGEWATER AND MIDDLEBORO BETWEEN 240 PM AND
315 PM.
 
OTHER STRONG THUNDERSTORMS WILL BE AFFECTING NORTHERN PLYMOUTH COUNTY
AND THE ADJACENT COASTAL WATERS.
 
TORRENTIAL RAINS...FREQUENT CLOUD TO GROUND LIGHTNING...DAMAGING WIND
GUSTS AND POSSIBLY HAIL WILL ACCOMPANY THESE STORMS.
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
OSIENSKY/FIELD

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 5, 1:25 PM EDT, 1 hour 8 minutes before
CTZ003-004-008-012-052000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
125 PM EDT FRI AUG 05 1994

...HEAVY THUNDERSTORMS MOVING ACROSS EASTERN CONNECTICUT...

AT 115 PM RADAR INDICATES A LINE OF HEAVY THUNDERSTORMS MOVING ACROSS
EASTERN CONNECTICUT. THE LINE EXTENDS FROM BOSTON IN MASSACHUSETTS
SOUTHWEST TO AROUND OLD SAYBROOK IN CONNECTICUT AND OVER LONG ISLAND
SOUND. THESE STORMS HAVE BEEN INCREASING IN INTENSITY OVER THE PAST
HOUR AS THEY MOVE INTO A VERY WARM AND UNSTABLE AIRMASS. THE STORM MAY
PRODUCE BRIEF TORRENTIAL RAINS...BRIEF GUSTY WINDS AND NUMEROUS CLOUD
TO GROUND LIGHTNING STRIKES. THE STORMS AREA MOVING EAST NORTHEAST AT
25 MPH AND SHOULD MOVE OUT OF CONNECTICUT BY 300 PM.

IF THE WEATHER LOOKS THREATENING...SEEK SHELTER INDOORS. STAY TUNED TO
NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR T.V. STATION FOR FURTHER
UPDATES ON THIS STORM.

NOTCHEY
Special weather statement, Aug 5, 1:26 PM EDT, 1 hour 7 minutes before
CTZ003-004-008-012-052000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
125 PM EDT FRI AUG 05 1994

...HEAVY THUNDERSTORMS MOVING ACROSS EASTERN CONNECTICUT...

AT 115 PM RADAR INDICATES A LINE OF HEAVY THUNDERSTORMS MOVING ACROSS
EASTERN CONNECTICUT. THE LINE EXTENDS FROM BOSTON IN MASSACHUSETTS
SOUTHWEST TO AROUND OLD SAYBROOK IN CONNECTICUT AND OVER LONG ISLAND
SOUND. THESE STORMS HAVE BEEN INCREASING IN INTENSITY OVER THE PAST
HOUR AS THEY MOVE INTO A VERY WARM AND UNSTABLE AIRMASS. THE STORM MAY
PRODUCE BRIEF TORRENTIAL RAINS...BRIEF GUSTY WINDS AND NUMEROUS CLOUD
TO GROUND LIGHTNING STRIKES. THE STORMS AREA MOVING EAST NORTHEAST AT
25 MPH AND SHOULD MOVE OUT OF CONNRECTICUT BY 300 PM.

IF THE WEATHER LOOKS THREATENING...SEEK SHELTER INDOORS. STAY TUNED TO
NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR T.V. STATION FOR FURTHER
UPDATES ON THIS STORM.

NOTCHEY
Special weather statement, Aug 5, 1:37 PM EDT, 56 minutes before
MAZ019-501-051845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
137 PM EDT FRI AUG 5 1994

AT 130 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR HANOVER. THIS STORM WILL MOVE NORTHEAST ACROSS THE
SCITUATE...MARSHFIELD...DUXBURY AREAS THROUGH 2 PM AND MAY PRODUCE
WIND GUSTS TO 40 MPH.

A SPECIAL MARINE WARNING REMAINS IN EFFECT FOR THE COASTAL WATERS FROM
GLOUCESTER TO PLYMOUTH INCLUDING BOSTON HARBOR UNTIL 2 PM.

THUNDERSTORMS CONTINUE TO MOVE ACROSS EASTERN CONNECTICUT...RHODE ISLAND
AND SOUTHEAST MASSACHUSETTS.  THESE STORMS MAY PRODUCE LOCALLY HEAVY
RAIN...GUSTY WINDS...AND POSSIBLY SMALL HAIL.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR FURTHER
UPDATES.

OSIENSKY
Special weather statement, Aug 5, 1:39 PM EDT, 54 minutes before
MAZ019-501-051845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
137 PM EDT FRI AUG 5 1994

AT 130 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR HANOVER. THIS STORM WILL MOVE NORTHEAST ACROSS THE
SCITUATE...MARSHFIELD...DUXBURY AREAS THROUGH 2 PM AND MAY PRODUCE
WIND GUSTS TO 40 MPH.

A SPECIAL MARINE WARNING REMAINS IN EFFECT FOR THE COASTAL WATERS FROM
GLOUCESTER TO PLYMOUTH INCLUDING BOSTON HARBOR UNTIL 2 PM.

THUNDERSTORMS CONTINUE TO MOVE ACROSS EASTERN CONNECTICUT...RHODE ISLAND
AND SOUTHEAST MASSACHUSETTS.  THESE STORMS MAY PRODUCE LOCALLY HEAVY
RAIN...GUSTY WINDS...AND POSSIBLY SMALL HAIL.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR FURTHER
UPDATES.

OSIENSKY
Special weather statement, Aug 5, 1:56 PM EDT, 37 minutes before
MAZ013-017-018-051900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
158 PM EDT FRI AUG 5 1994

AT 155 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR PROVIDENCE RHODE ISLAND. THIS STORM WAS MOVING
NORTHEAST AT 30 MPH AND WILL MOVE ACROSS NORTHERN BRISTOL COUNTY
BETWEEN 200 PM AND 230 PM.

THIS STORM HAS BEEN PRODUCING VERY HEAVY RAIN AND GUSTY WINDS.  IF
YOU LIVE IN THE ATTLEBORO AND TAUNTON AREAS...BE PREPARED FOR LOCALLY
HEAVY RAINS WHICH MAY CAUSE PONDING OF WATER IN POOR DRAINAGE AREA.

PLEASE STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS
FOR FURTHER UPDATES.

OSIENSKY
Special weather statement, Aug 5, 1:58 PM EDT, 35 minutes before
MAZ013-017-018-051900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
158 PM EDT FRI AUG 5 1994

AT 155 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR PROVIDENCE RHODE ISLAND. THIS STORM WAS MOVING
NORTHEAST AT 30 MPH AND WILL MOVE ACROSS NORTHERN BRISTOL COUNTY
BETWEEN 200 PM AND 230 PM.

THIS STORM HAS BEEN PRODUCING VERY HEAVY RAIN AND GUSTY WINDS.  IF
YOU LIVE IN THE ATTLEBORO AND TAUNTON AREAS...BE PREPARED FOR LOCALLY
HEAVY RAINS WHICH MAY CAUSE PONDING OF WATER IN POOR DRAINAGE AREA.

PLEASE STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS
FOR FURTHER UPDATES.

OSIENSKY

ARE INDICATED OVER THE RICHMOND METRO AREA
WITH THE STRONGEST ACTIVITY NOW JUST TO THE EAST OF RICHMOND.
>
ANOTHER CLUSTER OF THUNDERSTORMS IS INDICATED NORTH OF
METRO RICHMOND OVER CENTRAL HANOVER COUNTY.

THESE STORMS APPEAR TO BE ORGANIZING INTO A LINE AS THEY
ADVANCE TOWARD SOUTHEASTERN VIRGINIA.

BRING IN ANY LOOSES OBJECTS WHICH COULD BE BLOWN AWAY BY THE
WIND. DO NOT USE ELECTRICAL APPLIANCES DURING ELECTRICAL
STORMS. EXPECT VISIBILITY TO BE SIGNIFICANTLY
REDUCED DURING PERIODS OF HEAVY RAIN.

STAY TUNED FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS.

LIPSON

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 2:04 PM EDTSevere Thunderstorm WarningBOXBristol41 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1994Every 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.