Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 13, NWS Cleveland, OH

May 30, 1987Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at May 30, 1987, 1:52 PM EDT for Erie County, Pennsylvania. It was in force for 68 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, 1:52 PM EDT (17:52 UTC)
Expired
May 30, 1987, 3:00 PM EDT
In force
68 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Erie County, PA

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, 3:00 PM EDTHail 0.75Erie, PA

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, 5.9 hours before the alert went out and 190 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 KERI 301752
SVRERI
PAC049-301900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
152 PM EDT SAT MAY 30 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 300 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHWEST PENNSYLVANIA...ERIE

AT 140 PM EDT RADAR SHOWS A SEVERE THUNDERSTORMS NEAR ALBION
IN SOUTHWEST ERIE COUNTY MOVING TOWARDS THE NORTHEAST AT
15 :MILES AN HOUR.

THESE STORMS ARE ACCOMPANIED BY DANGEROUS LIGHTNING..STRONG GUSTY
WINDS AND HAIL.

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 1:38 PM EDTSevere Thunderstorm WarningCLECrawford67 min
May 30, 2:50 PM EDTSevere Thunderstorm WarningCLECrawford, Erie60 min
May 30, 6:25 PM EDTSevere Thunderstorm WarningCLEPotter65 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 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.