Alert archive / Rhode Island / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 69, NWS Boston/Norton, MA

August 6, 1997Providence County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 6, 1997, 4:37 PM EDT for Providence County, Rhode Island. It was in force for 53 min. 3 reports 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 6, 1997, 4:37 PM EDT (20:37 UTC)
Expired
Aug 6, 1997, 5:30 PM EDT
In force
53 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 20:40 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.

What was reported inside it

TimeReportWhereRemark
Aug 6, 5:10 PM EDTHail 0.75Burrillville, RI
Aug 6, 5:15 PM EDTHail 1.5North Smithfield, RI
Aug 6, 5:32 PM EDTHail 0.75Woonsocket, 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.

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 8.6 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 1997-08-06Temperature 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 1997-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.1939587897117Sfc1 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
-62 J/kg
Mixed-layer LCL
946 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
28 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 062038 RRA
SVRBOS
RIC007-062130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
437 PM EDT WED AUG 6 1997
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH RHODE ISLAND
 
   ...CENTRAL PROVIDENCE COUNTY
 
RADAR AND SPOTTER REPORTS INDICATED A STATIONARY THUNDERSTORM WHICH HAS
PRODUCED TORRENTIAL RAIN CAUSING LOCAL STREET FLOODING. RADAR ALSO
INDICATED LARGE HAIL NEAR GREENVILLE WITH THIS STORM.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
TF/MG

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.