Alert archive / Rhode Island / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 8, NWS Boston/Norton, MA

May 1, 1997Providence County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 1, 1997, 6:35 PM EDT for Providence County, Rhode Island. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 1, 1997, 6:35 PM EDT (22:35 UTC)
Expired
May 1, 1997, 7:00 PM EDT
In force
25 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Providence County, RI

The radar

The Boston radar (KBOX), 38 km from the middle of the area, began a volume at 22:35 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, 10.6 hours before the alert went out and 135 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 1997-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 1997-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
2 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
232 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 012234 RRA
SVRBOS
RIC007-012300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
635 PM EDT THU MAY 1 1997
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH RHODE ISLAND
 
   ...PROVIDENCE COUNTY
 
RADAR INDICATES A SEVERE THUNDERSTORM NEAR PUTNAM CONNECTICUT THAT IS
MOVING NORTHEAST AT 60 MPH. IT WILL MOVE THROUGH BURRILLVILLE IN
NORTHWEST RHODE ISLAND. THIS STORM HAS PRODUCED LARGE HAIL IN WINDHAM
COUNTY IN CONNECTICUT DURING THE PAST HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LBIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

Nearby

Severe Thunderstorm Warnings in Rhode Island, 1997Every severe thunderstorm warning in 1997

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.