Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 75, NWS Boston/Norton, MA

September 9, 1994Essex County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 9, 1994, 5:07 PM EDT for Essex County, Massachusetts. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1994, 5:07 PM EDT (21:07 UTC)
Expired
Sep 9, 1994, 6:00 PM EDT
In force
53 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Essex County, MA

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.1 hours before the alert went out and 131 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 1994-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 1994-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
5 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
1500 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
129 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 092109 RRA
SVRBOS
MAC009-MAZ501-502-092200-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
507 PM EDT FRI SEP 9 1994
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  600 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  MASSACHUSETTS
 
   ...SOUTHERN ESSEX COUNTY
 
  AND FOR MARINE INTERESTS ON THE COASTAL WATERS FROM...
 
     ...GLOUCESTER  TO  BOSTON HARBOR
 
AT 500 PM NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS LOCATED OVER SOUTHERN ESSEX COUNTY FROM SAUGUS TO NEAR
BEVERLY. THESE STORMS WERE MOVING EAST AT 35 MPH AND WILL ALSO BE
AFFECTING THE COASTAL WATERS FROM LYNN HARBOR TO GLOUCESTER.

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, Sep 9, 3:16 PM EDT, 1 hour 51 minutes before
RIZ001>-
005-CTZ004-092015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
314 PM EDT FRI SEP 9 1994

AT 310 PM NATIONAL WEATHER RADAR AT TAUNTON MA INDICATED THUNDERSTORMS
OVER EASTERN WINDHAM COUNTY CONNECTICUT AND WERE MOVING EAST INTO
PROVIDENCE AND KENT COUNTIES OF RHODE ISLAND. THESE STORMS WERE MOVING
AT 30 TO 35 MPH AND MAY PRODUCE STRONG GUSTY WINDS AND POSSIBLE HAIL.
THERE HAVE BEEN REPORTS THAT THESE STORMS ARE ALSO PRODUCING VERY HEAVY
RAIN.

KLEIN
Special weather statement, Sep 9, 3:44 PM EDT, 1 hour 23 minutes before
MAZ017-018-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
344 PM EDT FRI SEP 9 1994

AT 340 PM NATIONAL WERATHER SERVICE RADAR INDICATED A THUNDERSTORM WITH
VERY HEAVY RAIN...POSSIBLE HAIL AND STRONG GUSTY WINDS WAS LOCATED OVER
NORTHERN RHODE ISLAND. THIS STORM WAS MOVING EAST AT 30 TO 35 MPH AND
WILL BE MOVING INTO BRISTOL AND PLYMOUTH COUNTIES OF MASSACHUSETTS BY
350 PM.

KLEIN
Special weather statement, Sep 9, 3:45 PM EDT, 1 hour 22 minutes before
MAZ017-018-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
344 PM EDT FRI SEP 9 1994

AT 340 PM NATIONAL WERATHER SERVICE RADAR INDICATED A THUNDERSTORM WITH
VERY HEAVY RAIN...POSLSIBLE HAIL AND STRONG GUSTY WINDS WAS LOCATED OVER
NORTHERN RHODE ISLAND. THIS STORM WAS MOVING EAST AT 30 TO 35 MPH AND
WILL BE MOVING INTO BRISTOL AND PLYMOUTH COUNTIES OF MASSACHUSETTS BY
350 PM.

KLEIN
Special weather statement, Sep 9, 3:46 PM EDT, 1 hour 21 minutes before
MAZ017-018-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
344 PM EDT FRI SEP 9 1994

AT 340 PM NATIONAL WERATHER SERVICE RADAR INDICATED A THUNDERSTORM WITH
VERY HEAVY RAIN...POSNSIBLE HAIL AND STRONG GUSTY WINDS WAS LOCATED OVER
NORTHERN RHODE ISLAND. THIS STORM WAS MOVING EAST AT 30 TO 35 MPH AND
WILL BE MOVING INTO BRISTOL AND PLYMOUTH COUNTIES OF MASSACHUSETTS BY
350 PM.

KLEIN
Special weather statement, Sep 9, 3:50 PM EDT, 1 hour 17 minutes before
MAZ013-017>019-MAZ501-502-504-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
350 PM EDT FRI SEP 9 1994

AT 345 PM RADAR AT NATIONAL WEATHER SERVICE TAUNTON MA INDICATED A
STRONG THUNDERSTORM WITH VERY HEAVY RAIN...POSSIBLE HAIL AND STRONG
GUSTY WINDS WAS LOCATED OVER SOUTHERN NORFOLK COUNTY. THIS STORM WAS
MOVING EAST AT 30 TO 35 MPH AND WILL MOVING INTO FOXBORO AND MANSFIELD
BY 350 PM. THIS STORM WILL ALSO BE AFFECTING BROCKTON AND OTHER PORTIONS
OF PLYMOUTH COUNTY.

KLEIN
Special weather statement, Sep 9, 3:54 PM EDT, 1 hour 13 minutes before
MAZ013-017>019-MAZ501-502-504-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
350 PM EDT FRI SEP 9 1994

AT 345 PM RADAR AT NATIONAL WEATHER SERVICE TAUNTON MA INDICATED A
STRONG THUNDERSTORM WITH VERY HEAVY RAIN...POSSIBLE HAIL AND STRONG
GUSTY WINDS WAS LOCATED OVER SOUTHERN NORFOLK COUNTY. THIS STORM WAS
MOVING EAST AT 30 TO 35 MPH AND WILL MOVING INTO FOXBORO AND MANSFIELD
BY 350 PM. THIS STORM WILL ALSO BE AFFECTING BRO`CKTON AND OTHER PORTIONS
OF PLYMOUTH COUNTY.

KLEIN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 4:06 PM EDTSevere Thunderstorm WarningBOXPlymouth26 min
Sep 9, 4:10 PM EDTSevere Thunderstorm WarningBOXEssex50 min
Sep 9, 5:21 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester54 min
Sep 9, 6:06 PM EDTSevere Thunderstorm WarningBOXNorfolk, Plymouth54 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.