Alert archive / Rhode Island / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 51, NWS Boston/Norton, MA

June 20, 1998Washington County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 20, 1998, 2:28 PM EDT for Washington County, Rhode Island. It was in force for 47 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
Jun 20, 1998, 2:28 PM EDT (18:28 UTC)
Expired
Jun 20, 1998, 3:15 PM EDT
In force
47 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Washington County, RI

The radar

The Boston radar (KBOX), 74 km from the middle of the area, began a volume at 18:27 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

Brookhaven, NY (KOKX), launched 12:00Z, 6.5 hours before the alert went out and 120 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, Brookhaven, NY at 12:00Z on 1998-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 369 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, Brookhaven, NY at 12:00Z on 1998-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.19395878Sfc1 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
369 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1296 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
17 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.

945 
WUUS1 KBOS 201829 RRA
SVRBOS
RIC009-201915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
228 PM EDT SAT JUN 20 1998

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN WASHINGTON COUNTY IN SOUTHWESTERN RHODE ISLAND

* UNTIL 315 PM EDT

* AT AT 225 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A SEVERE THUNDERSTORM ALONG THE CONNECTICUT-RHODE ISLAND
  BORDER IN NORTHWEST WASHINGTON COUNTY... MOVING SLOWLY EAST
  LESS THAN 10 MPH.

* TOWNS IN/NEAR THE PATH OF THIS STORM INCLUDE...
  EXETER...HOPKINTON AND RICHMOND

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WINDS STRONG ENOUGH
TO KNOCK DOWN TREES AND POWER LINES.  MOVE INDOORS AND STAY AWAY
FROM WINDOWS.

GIRODO/BABCOCK

Nearby

Severe Thunderstorm Warnings in Rhode Island, 1998Every severe thunderstorm warning in 1998

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.