Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 111, NWS Cleveland, OH

July 20, 1992Venango County, Warren County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 20, 1992, 2:25 PM EDT for Venango County, Warren County, Pennsylvania. It was in force for 65 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
Jul 20, 1992, 2:25 PM EDT (18:25 UTC)
Expired
Jul 20, 1992, 3:30 PM EDT
In force
65 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Venango County, PA, Warren County, PA

What was reported inside it

TimeReportWhereRemark
Jul 20, 2:45 PM EDTHail 0.75Venango, 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, 6.4 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 1992-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 136 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 1992-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.193958Sfc1 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
136 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
104 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 201828
SVRERI
PAC121-123-201930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
225 PM EDT MON JUL 20 1992
 
THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN NORTHWEST PENNSYLVANIA
 
   ...VENANGO COUNTY...WARREN COUNTY
 
AT 220 PM EDT WEATHER RADAR SHOWED A SEVERE THUNDERSTORM OVER
NORTHWEST WARREN COUNTY. ANOTHER SEVERE THUNDERSTORM WAS LOCATED OVER
NORTHERN VENANGO COUNTY...ABOUT 5 MILES NORTH OF OIL CITY. THESE
STORMS WERE MOVING TO THE EAST AT 30 MILES AN 30 MILES AN HOUR.
 
 
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 20, 1:13 PM EDT, 1 hour 12 minutes before
PAZOO1-002-201900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
105 PM EDT MON JUL 20 1992

...STRONG THUNDERSTORMS FORMING OVER PARTS OF NORTHWEST PENNSYLVANIA...

AT 1PM EDT WEATHER RADAR SHOWED A LINE OF THUNDERSTORMS THAT EXTENDED FROM
CHAUTAUQUA COUNTY...NEW YORK STATE TO JUST SOUTH OF ERIE PENNSYLVANIA TO
CENTRAL ASHTABULA COUNTY OHIO.  THE THUNDERSTORMS WERE MOVING TO THE EAST
AT 35 MILES AN HOUR.   THE STORMS THAT DEVELOPED JUST SOUTH OF ERIE PRODUCED
VERY HEAVY RAIN...INTENSE LIGHTNING AND WIND GUSTS TO 50 MILES AN HOUR.

THE AIR OVER WESTERN PENNSYLVANIA HAS BECOME VERY WARM AND UNSTABLE AND
MORE THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOON AND EVENING HOURS.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES OR POSSIBLE WARNING
FROM THE NATIONAL WEATHER SERVICE.

TJP/RAR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 1:30 PM EDTSevere Thunderstorm WarningCLEErie60 min
Jul 20, 3:14 PM EDTSevere Thunderstorm WarningCLELawrence61 min
Jul 20, 5:57 PM EDTFlash Flood WarningCLEForest, Venango, Warren3 hr
Jul 20, 6:15 PM EDTFlash Flood WarningCLECrawford2 hr
Jul 20, 6:15 PM EDTSevere Thunderstorm WarningCLECrawford2 hr
Jul 20, 6:27 PM EDTFlash Flood WarningCLECameron, Elk, McKean3 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1992Every severe thunderstorm warning in 1992

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.