Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 13, NWS Cleveland, OH

May 30, 1989Venango County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at May 30, 1989, 6:22 PM EDT for Venango County, Pennsylvania. It was in force for 68 min. 3 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
May 30, 1989, 6:22 PM EDT (22:22 UTC)
Expired
May 30, 1989, 7:30 PM EDT
In force
68 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Venango 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, 6:30 PM EDTThunderstorm Wind 0Venango, PA
May 30, 6:45 PM EDTThunderstorm Wind 0Venango, PA
May 30, 6:50 PM EDTThunderstorm Wind 0Venango, 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, 10.4 hours before the alert went out and 114 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 1989-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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 1989-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 310 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
17 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
890 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
310 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KERI 302222
SVRERI
PAC121-302330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ERIE PA
622 PM EDT TUE MAY 30 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 730 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTHWEST PART OF PENNSYLVANIA
      VENANGO

AT 615 PM EDT WEATHER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT
5 MILES WEST OF OIL CITY IN VENANGO COUNTY. THIS STORM PRODUCED
1/2 INCH HAIL...VERY HEAVY DOWNPOURS AND WIND GUSTS OF 40 TO 50
MPH AS IT MOVED ACROSS SOUTHERN CRAWFORD COUNTY.

THIS SEVERE THUNDERSTORM WAS MOVING EASTWARD AT 20 MILES AN HOUR
TOWARDS OIL CITY.

THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL AND DANGEROUS LIGHTNING.  PEAPLE OUTSIDE
SHOULD MOVE TO SHELTER.  STAY AWAY FROM WINDOWS.

 PARRISH/WELLS

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 6:31 PM EDTSevere Thunderstorm WarningCLEMercer59 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1989Every severe thunderstorm warning in 1989

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.