Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 82, NWS Cleveland, OH

July 7, 1993McKean County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 7, 1993, 4:55 PM EDT for McKean County, Pennsylvania. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1993, 4:55 PM EDT (20:55 UTC)
Expired: Jul 7, 1993, 6:00 PM EDT
In force: 65 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County McKean County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.9 hours before the alert went out and 125 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1094 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KERI 072059 COR
SVRERI
PAC083-072200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE ERIE PA
455 PM EDT WED JUL 7 1993

THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM EDT
FOR THE FOLLOWING LOCATION...

IN NORTHWEST PENNSYLVANIA

   ...MCKEAN COUNTY

AT 450 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHCENTRAL
MCKEAN COUNTY EAST OF KANE.

THIS SEVERE STORM IS MOVING EAST AT 20 MILES AN HOUR AND SHOULD MOVE
JUST SOUTH OF MT JEWETT.

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.

CORRECTED FOR TIME...

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 7, 3:50 PM EDT, 1 hour 5 minutes before

PAZ001-002-072030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
350 PM EDT WED JUL 07 1993

...STRONG THUNDERSTORMS IN ERIE AND CRAWFORD COUNTIES...

AT 345 PM EDT RADAR INDICATED AN AREA OF SHOWERS AND STRONG
THUNDERSTORMS IN SOUTH-CENTRAL ERIE COUNTY AND NORTH-CENTRAL
CRAWFORD COUNTY CENTERED ALONG I-79.

THESE STORMS ARE MOVING EASTWARD AT 25 MILES AN HOUR AND WILL
BE AFFECTING THE EDINBORO AND CAMBRIDGE SPRINGS AREAS BEFORE
MOVING ON TOWARDS THE UNION CITY...CORRY AREAS.

THESE STORMS CAN PRODUCE STRONG GUSTY WINDS...SMALL HAIL...
DANGEROUS LIGHTNING AND HEAVY DOWNPOURS CAUSING FLOODING ALONG
ROADWAYS AND LOW LYING AREAS.

PARRISH

L WEATHER SERVICE DETROIT/PONTIAC MI
3?6WWUS
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(MG 1013 26017/28999 SCT020 BKN03
EGGW 0018 26006999 SCT030 PROB3MPO 0004 BKN010=7O6WWUS,
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N015 TEMPO 1318  RA BKN008=
EG#F66WWUSt

Special weather statement, Jul 7, 3:55 PM EDT, 1 hour before

PAZ001-002-072030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
350 PM EDT WED JUL 07 1993

...STRONG THUNDERSTORMS IN ERIE AND CRAWFORD COUNTIES...

AT 345 PM EDT RADAR INDICATED AN AREA OF SHOWERS AND STRONG
THUNDERSTORMS IN SOUTH-CENTRAL ERIE COUNTY AND NORTH-CENTRAL
CRAWFORD COUNTY CENTERED ALONG I-79.

THESE STORMS ARE MOVING EASTWARD AT 25 MILES AN HOUR AND WILL
BE AFFECTING THE EDINBORO AND CAMBRIDGE SPRINGS AREAS BEFORE
M$OVING ON TOWARDS THE UNION CITY...CORRY AREAS.

THESE STORMS CAN PRODUCE STRONG GUSTY WINDS...SMALL HAIL...
DANGEROUS LIGHTNING AND HEAVY DOWNPOURS CAUSING FLOODING ALONG
ROADWAYS AND LOW LYING AREAS.

PARRISH

Local storm report, Jul 7, 4:26 PM EDT, 29 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ERIE, PA
426 PM EDT WED JUL 07 1993

STORM REPORTS FOR JULY 07 1993 AT ERIE PA

TIME  EDT    EVENT
.........................................................................
1425  EDT    SPOTTER REPORTS 60 MPH WINDS 1 MILE SOUTH OF GIRARD IN
             NORTHERN ERIE COUNTY.

1430  EDT    SKYWARN REPORTS LARGE TREES DOWNED VICINITY OF FRANKLIN
             CENTER AND PLATEA IN ERIE COUNTY.

PARRISH

Local storm report, Jul 7, 4:30 PM EDT, 25 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ERIE, PA
426 PM EDT WED JUL 07 1993

STORM REPORTS FOR JULY 07 1993 AT ERIE PA

TIME  EDT    EVENT
.........................................................................
1425  EDT    SPOTTER REPORTS 60 MPH WINDS 1 MILE SOUTH OF GIRARD IN
             NORTHERN ERIE COUNTY.

1430  EDT    SKYWARN REPORTS LARGE TREES DOWNED VICINITY OF FRANKLIN
             CENTER AND PLATEA IN ERIE COUNTY.

PAvRRISH

Special weather statement, Jul 7, 4:34 PM EDT, 21 minutes before

PAZ001>003-072200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
434 PM EDT WED JUL 07 1993

...THUNDERSTORMS CONTINUE TO DEVELOP IN THE SULTRY AIRMASS OVER NORTHWEST...
...PENNSYLVANIA...

AT 430 EDT RADAR SHOWED SEVERAL AREAS OF SHOWERS AND THUNDERSTORMS ACROSS
THE DISTRICT.  ONE AREA EXTENDED FROM THE WATERFORD AREA IN ERIE COUNTY
EASTWARD INTO CENTRAL WARREN COUNTY.  ANOTHER AREA WAS OVER MCKEAN COUNTY
WITH A STRONG STORM NEAR KANE. OTHER THUNDERSTORMS WERE OVER GEAUGA
AND SOUTHERN ASHTABULA COUNTIES IN NORTHEAST OHIO.

THESE THUNDERSTORMS WERE MOVING EASTWARD AT 25 MILES AN HOUR.
SOME STORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...
SMALL HAIL AND HEAVY DOWNPOURS.

PARRISH/BELK/LAMBERT

Special weather statement, Jul 7, 4:46 PM EDT, 9 minutes before

PAZ001>003-072200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
434 PM EDT WED JUL 07 1993

...THUNDERSTORMS CONTINUE TO DEVELOP IN THE SULTRY AIRMASS OVER NORTHWEST...
...PENNSYLVANIA...

AT 430 EDT RADAR SHOWED SEVERAL AREAS OF SHOWERS AND THUNDERSTORMS ACROSS
THE DISTRICT.  ONE AREA EXTENDED FROM THE WATERFORD AREA IN ERIE COUNTY
EASTWARD INTO CENTRAL WARREN COUNTY.  ANOTHER AREA WAS OVER MCKEAN COUNTY
WITH A STRONG STORM NEAR KANE. OTHER THUNDERSTORMS WERE OVER GEAUGA
AND SOUTHERN ASHTABULA COUNTIES IN NORTHEAST OHIO.

THESE THUNDERSTORMS WERE MOVING EASTWARD AT 25 MILES AN HOUR.
SOME STORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...
SMALL HAIL AND HEAVY DOWNPOURS.

PARRISH/BELK/LAMBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 2:18 PM EDT	Severe Thunderstorm Warning	CLE	Erie	57 min
Jul 7, 5:17 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	58 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1993 Every severe thunderstorm warning in 1993

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.