Alert archive / Rhode Island / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 19, NWS Boston/Norton, MA

August 8, 1986Kent County, Washington County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 8, 1986, 11:00 AM EDT for Kent County, Washington County, Rhode Island. It was in force for 105 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 8, 1986, 11:00 AM EDT (15:00 UTC)
Expired
Aug 8, 1986, 12:45 PM EDT
In force
105 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

Counties Kent County, RI, Washington County, RI

The radar

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

What was reported inside it

TimeReportWhereRemark
Aug 8, 12:40 PM EDTThunderstorm Wind 51Washington, RI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 3.0 hours before the alert went out and 136 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 1986-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1301 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 1986-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1301 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPVD 081503
SVRPVD
RIC003-007-009-081645-

BULLETIN--IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PROVIDENCE RI
1100 AM EDT  THU  AUG 8 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1245 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF
RHODE ISLAND...PROVIDENCE..KENT..WASHINGTON COUNTIES..NARRAGANSETT BAY
AND THE COASTAL WATERS OF RHODE ISLAND.
AT 1100 AM EDT...WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM
IN PUTNAM COUNTY OF CONNECTICUT AND OVER LONG ISLAND SOUND MOVING
NORHEAST INTO RHODE ISLAND AND THE COASTAL WATERS.

PEOPLE LIVING IN THESE COUNTIES OF RHODE ISLAND AND BOATING INTREST
SHOULD BE ALERT FOR THREATENING WEATHER AND HEAD FOR A SAFE SHELTER
AS IT APPROACHES.

SCANTLEBURY

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 8, 10:07 AM EDT, 53 minutes before
^BOSSPSPVD

SPECIAL WEATHER STATEMENT FOR RHODE ISLAND
NATIONAL WEATHER SERVICE PROVIDENCE RI
1015 AM EDT FRI AUG 8 1986

...HEAVY THUNDERSTORMS NOW IN SOUTHEASTERN CONNECTICUT...

AT 10 AM EDT CHATHAM WEATHER RADAR SHOWED A HEAVY THUNDERSTORM IN THE
NORWICH AREA OF CONNECTICUT MOVING IN A NORTHEAST DIRECTION INTO
WESTERN RHODE ISLAND..WASHINGTON OR KENT COUNTIES. THIS STORM MAY BE
ACCOMPANIED BY STRONG GUSTY WIND AND TORENTIAL DOUNPOURS.

PEOPLE} LIVING IN THIS AREA SHOWLD REMAIN ALERT FOR THREATENING WEATHER
AND TAKE COVER AS IT APPROCHES.

RFS
Special weather statement, Aug 8, 10:19 AM EDT, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
 10 15 AM EDT FRI AUG 8 1986

  ...HEAVY THUNDERSTORM IN SOUTHEASTERN CONNECTICUT MOVING NORTHEAST...

THE NATIONAL WEATHER SERVICE RADAR AT BRADLEY INTERNATIONAL AIROPRT
IN WINDSOR LOCKS CONNECTICUT OBSERVED A HEAVY THUNDERSTORM OVER
MONTVILLE CONNECTICUT MOVING NORTHEAST AT 25 MPH. THIS CELL SHOULD
BE IN RHODE ISLAND WITHIN THE HOUR.

STATE POLICE AT MONTVILLE CONNECTICUT REPORTED VERY HEAVY DOWNPOURS
AND DANGEROUS LIGHTNING.

PERSONS LIVING IN THIS AREA SHOULD REMAIN ALERT FOR THREATENING WEATHER
AND TAKE COVER IF NECESSARY.

KONDOS
Special weather statement, Aug 8, 11:00 AM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WORCESTER MA
1100 AM EDT FRI AUG 8 1986

   ...THUNDERSTORM THREATENING SOUTHERN WORCESTER COUNTY...

AT 1100 AM WEATHER SERVICE RADAR SHOWED AN INTENSE THUNDERSTORM IN
EXTREME NORTHEASTERN CONNECTICUT MOVING TOWARDS THE NORTHEAST AT 25
MPH.  THIS MOVEMENT WOULD BRING THE THUNDERSTORM INTO SOUTHERN
WORCESTER COUNTY OF MASSACHUSETTS DURING THE NEXT HOUR.

THE THUNDERSTORM CONTAINS VERY HEAVY RAIN WHICH COULD CAUSE SOME
FLOODING OF ROADS AND POOR DRAINAGE AREAS. IT COULD ALSO BE
ACCOMPANIED BY STRONG GUSTY WINDS..HAIL AND DANGEROUS LIGHTNING.
RESIDENTS OF SOUTHERN WORCESTER COUNTY SHOULD BE ALERT FOR THESE
CONDITIONS AND TAKE COVER IF THREATENING WEATHER APPROACHES.

KEHIR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 10:45 AM EDTSevere Thunderstorm WarningBOXProvidence2 hr

Nearby

Severe Thunderstorm Warnings in Rhode Island, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.