Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 13, NWS Cleveland, OH

April 6, 1986Venango County, Warren County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Apr 6, 1986, 4:20 PM EST for Venango County, Warren County, Pennsylvania. It was in force for 70 min. 2 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
Apr 6, 1986, 4:20 PM EST (21:20 UTC)
Expired
Apr 6, 1986, 5:30 PM EST
In force
70 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Venango County, PA, Warren 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
Apr 6, 4:40 PM ESTHail 0.75Venango, PA
Apr 6, 4:55 PM ESTHail 0.75Warren, 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, 9.3 hours before the alert went out and 142 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 1986-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 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 1986-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
57 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
799 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
88 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 062125
SVRERI
PAC123-121-062230-

BULLETIN  BROADCAST IMMEDIATELY
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
420 PM EST SUN APR 06 1986

THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A SEVERE THUNDERSTORM
WARNING UNTIL 530 PM EST FOR THESE COUNTIES IN

NORTHWESTERN PENNSYLVANIA...WARREN AND VENANGO..

AT 425 PM ERIE WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
ENTERING SOUTHWESTERN WARREN AND WESTERN VENANGO COUNTIES. THIS LINE
IS MOVING TOWARDS THE SOUTHEAST AT 15 TO 20 MPH.

A SEVERE THUNDERSTORM WARNING MEANS SEVERE THUNDERSTORMS ARE IMMINENT
OR IN PROGRESS..THESE THUNDERSTORMS WILL PRODUCE DAMAGING WIND..HAIL..
HEAVY RAIN AND DANGEROUS LIGHTNING.

PARRIS

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1986Every severe thunderstorm warning in 1986

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.