Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 6, NWS Boston/Norton, MA

May 28, 1986Barnstable County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 28, 1986, 3:10 PM EDT for Barnstable County, Massachusetts. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: May 28, 1986, 3:10 PM EDT (19:10 UTC)
Expired: May 28, 1986, 4:00 PM EDT
In force: 50 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

County Barnstable County, MA

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

Chatham, MA (KCHH), launched 12:00Z, 7.2 hours before the alert went out and 25 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3 J/kg
Mixed-layer CIN: -267 J/kg
Mixed-layer LCL: 1923 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 64 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 281911
SVRBOS
MAC001-292000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE BOSTON MA
ISSUED 310 PM EDT WED MAY 28 1986 EXPIRES 400 PM EDT 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 400 PM EDT FOR PERSONS
IN THE FOLLOWING COUNTIES OF

SOUTHEASTERN MASSACHUSETTS...BARNSTABLE...INCLUDING THE ADJACENT
COASTAL WATERS OF BUZZARDS BAY.

A SECOND AREA OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND STRONG GUSTY
WIND IS APPROACHING BUZZARDS BAY AND THE UPPER AND MID CAPE.  RADAR
INDICATES THAT SOME OF THESE THUNDERSTORMS WILL HAVE LARGE DAMAGING HAIL
AND GUSTY WINDS (AS THEY PASS ACROSS THIS AREA BETWEEN 315 AND 4PM.

PREPARE FOR STRONG WIND...LARGE HAIL...VERY HEAVY RAIN AND
LIGHTNING.  REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT
WEATHER SERVICE.

DILLEY

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 28, 1:56 PM EDT, 1 hour 14 minutes before

SPECIAL WEATHER STATEMENT FOR MASSACHUSETTS
NATIONAL WEATHER SERVICE BOSTON MA
150 PM EDT WED MAY 28 1986

AT 140 PM EDT WEATHER RADAR INDICATED A VERY HEAVY THUNDERSTORM
IN CAPE COD BAY MOVING SOUTHEASTWARD TOWARD CAPE COD AT 35 MPH.

THIS THUNDERSTORM WILL AFFECT CAPE COD BETWEEN 2 AND 3 PM EDT.
VERY HEAVY SHOWERS..POSSIBLE HAIL AND STRONG GUSTY WINDS WILL
ACCOMPANY THE PASSAGE OF THIS STORM.

IF THREATENING WEATHER APPROACHES SEEK SAFE SHELTER IMMEDIATELY.

RMK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 2:40 PM EDT	Severe Thunderstorm Warning	BOX	Dukes	60 min
May 28, 2:40 PM EDT	Severe Thunderstorm Warning	BOX	Nantucket	60 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 1986 Every 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.