Alert archive / Connecticut / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 7, NWS Boston/Norton, MA

May 31, 1986Northwest Hills Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 31, 1986, 4:33 PM EDT for Northwest Hills Planning Region, Connecticut. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
May 31, 1986, 4:33 PM EDT (20:33 UTC)
Expired
May 31, 1986, 5:30 PM EDT
In force
57 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Northwest Hills Planning Region, CT

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Albany, NY (KALB), launched 12:00Z, 8.6 hours before the alert went out and 106 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 1986-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 190 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, Albany, NY at 12:00Z on 1986-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
190 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBDL 312033
SVRBDL
CTC005-312130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WINDSOR LOCKS CT
433 PM EDT SAT MAY 31 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 530 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

CONNECTICUT...LITCHFIELD

AT 430PM, A SEVERE THUNDERSTORM WAS INDICATED BY RADAR OVER
WESTERN LITCHFIELD COUNTY

 THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL
 STREAMS AND UNDERPASSES

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, May 31, 3:15 PM EDT, 1 hour 18 minutes before
^BOSSPSPVD

SPECIAL WEATHER STATEMENT FOR RHODE ISLAND
NATIONAL WEATHER SERVICE PROVIDENCE RI
314 PM EDT  SAT  MAY 31 1986

 ...A VERY STRONG THUNSTORM IS MOVING THROUGH RHODE ISLAND...

.AT 300 PM A VERY HEAVY THUNDERSTORM WITH STRONG..SQUALLY WINDS..HEAVY
DOWNPOURS AND POSSIBLE HAIL DEVELOPED NORTH OF PROVIDENCE RHODE ISLAND.

THIS STORM COULD LIKELY MOVE INTO NARRAGANSETT BAY WITHIN THE NEXT HOUR
OR TWO.

RHODE ISLANDERS SHOULD BE ALERT FOR TfREATENING WEATHER AND TAKE
SHELTER AS IT APPROACHES.  MARINERS SHOULD HEAD FOR A SAFE PORT NOW
AND WAIT FOR THE STORM TO PASS.

MMC

Nearby

Severe Thunderstorm Warnings in Connecticut, 1986Every severe thunderstorm warning in 1986

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.