Alert archive / West Virginia / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 13, NWS Pittsburgh, PA

May 30, 1987Hancock County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 30, 1987, 7:10 PM EDT for Hancock County, West Virginia. It was in force for 60 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
May 30, 1987, 7:10 PM EDT (23:10 UTC)
Expired
May 30, 1987, 8:10 PM EDT
In force
60 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Hancock County, WV

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
May 30, 7:25 PM EDTThunderstorm Wind 75Hancock, WV

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

Pittsburgh, PA (KPIT), launched 12:00Z, 11.2 hours before the alert went out and 42 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, Pittsburgh, PA at 12:00Z on 1987-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1755 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, Pittsburgh, PA at 12:00Z on 1987-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939Sfc1 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
1755 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1131 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-18 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 KPIT 302317 COR
SVRPIT
WVC029-310015-

BULLETIN  BROADCAST IMMEDIATELY
SEVERE THUNDERSTORM WARNING...CORRECTION TO ADD COUNTY
NATIONAL WEATHER SERVICE PITTSBURGH PA
710 PM EDT SAT MAY 30 1987

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE
THUNDERSTORM WARNING UNTIL 810 PM FOR THIS COUNTY IN

THE NORTHERN PANHANDLE OF WEST VIRGINIA...HANCOCK

AT 7 00 PM WEATHER RADAR SHOWED A POSSIBLE SEVERE THUNDERSTORM
IN EASTERN JEFFERSON COUNTY OF EASTERN OHIO. THIS STORM WILL MOVE
INTO HANCOCK COUNTY BEFORE 730 PM.

THIS STORM IS MOVING VERY SLOWLY AND MAY CAUSE ENOUGH RAIN TO
PRODUCE FLOODING.
<
OR IN PROGRESS. THESE STORMS WILL PRODUCE DAMAGING WIND..HAIL..HEAVY
RAIN..AND DANGEROUS LIGHTNING.

IF MTHREATENING WEATHER APPROACHES..GO TO A SAFE PLACE IMMEDIATELY.

Nearby

Severe Thunderstorm Warnings in West Virginia, 1987Every severe thunderstorm warning in 1987

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.