Alert archive / Pennsylvania / Tornado Warnings in 1987

Tornado Warning 13, NWS Cleveland, OH

August 9, 1987Erie County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Aug 9, 1987, 9:30 PM EDT for Erie County, Pennsylvania. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Aug 9, 1987, 9:30 PM EDT (01:30 UTC)
Expired
Aug 9, 1987, 10:00 PM EDT
In force
30 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.5 hours before the alert went out and 146 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, Buffalo Intl Airport, NY at 00:00Z on 1987-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 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, Buffalo Intl Airport, NY at 00:00Z on 1987-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
192 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
558 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KERI 100130
TORERI
PAC049-100200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ERIE PA
930 PM EDT SUN AUG 9 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1000 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

NORTHWEST PENNSYLVANIA...ERIE


SKY WARN OBSERVERS OBSERVED A FUNNEL CLOUD AT 9 PM EDT
5 MILES SOUTHWEST OF WATSBURG PENNSLYVANIA...15 MILES
SOUTH OF ERIE. THE FUNNEL CLOUD IS MOVING SOUTH AT 25 TO
30 MILES AN HOUR.

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

Nearby

Tornado Warnings in Pennsylvania, 1987Every tornado warning in 1987Tornadoes 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; the sounding from the Mesonet's radiosonde archive.