Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 97, NWS Boston/Norton, MA

October 28, 1995Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Oct 28, 1995, 8:38 AM EDT for Middlesex County, Massachusetts. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Oct 28, 1995, 8:38 AM EDT (12:38 UTC)
Expired
Oct 28, 1995, 9:30 AM EDT
In force
52 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Middlesex County, MA

The radar

The Boston radar (KBOX), 63 km from the middle of the area, began a volume at 12:40 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 nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 0.6 hours before the alert went out and 148 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 1995-10-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 599 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 1995-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 208 square meters per square second.19395878Sfc1 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
599 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
506 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBOS 281236 RRA
SVRBOS
MAC017-281330-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
838 AM EDT SAT OCT 28 1995
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  930 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  MASSACHUSETTS
 
   ...NORTHERN MIDDLESEX COUNTY
 
WEATHER RADAR INDICATED A SEVERE THUNDERSTORM NEAR AYER AT 835 AM. THIS
STORM WAS MOVING NORTHEA4ST AND WILL LIKELY MOVE THROUGH THE WESTFORD AND
CHELMSFORD AREAS BY 9 AM AND MAY AFFECT THE LOWELL AREA AROUND 9 AM.
THIS STORM WILL LIKELY HAVE POCKETS OF WINDS CAPABLE OF DOWNING TREES
AND POWER LINES.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 28, 7:28 AM EDTSevere Thunderstorm WarningBOXHampden, Hampshire47 min
Oct 28, 9:38 AM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Suffolk37 min
Oct 28, 11:25 AM EDTFlash Flood WarningBOXFranklin, Hampden, Hampshire4 hr

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1995Every severe thunderstorm warning in 1995

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.