Alert archive / Pennsylvania / Tornado Warnings in 1993

Tornado Warning 2, NWS Pittsburgh, PA

July 26, 1993Indiana County, Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jul 26, 1993, 4:11 PM EDT for Indiana County, Pennsylvania. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Jul 26, 1993, 4:11 PM EDT (20:11 UTC)
Expired
Jul 26, 1993, 5:00 PM EDT
In force
49 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Indiana County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.2 hours before the alert went out and 90 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 1993-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1278 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 1993-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
1278 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1114 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 262012
TORPIT
PAC063-262100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
411 PM EDT MON JUL 26 1993
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN WEST PENNSYLVANIA
 
   ...NORTHERN INDIANA COUNTY
 
AT 408 PM WEATHER RADAR AT PITTSBURGH INDICATED A POSSIBLE TORNADO NEAR
ROUTE 119 IN NORTHERN INDIANA COUNTY. THIS POSSIBLE TORNADO IS MOVING
EASTSOUTHEAST AT 25 MPH.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
DMW

What forecasters said that day

The local office's own words before this tornado 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 26, 12:40 PM EDT, 3 hours 31 minutes before
PAZ001>006-013>015-262300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1240 PM EDT MON JUL 26 1993

...TORNADO WATCH FOR THE WESTERN HALF OF PENNSYLVANIA TIL 7PM EDT...

A TORNADO WATCH HAS BEEN ISSUED TIL 7PM EDT FOR ALL OF WESTERN
PENNSYLVANIA.  THIS INCLUDES THE SURROUNDING CITIES OF PITTSBURGH...
ERIE...FRANKLIN...DUBOIS...BRADFORD...CLEARFIELD...STATE COLLEGE...
CHAMBERSBURG...ALTOONA...JOHNSTOWN...AND SOMERSET.

A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES AND
SEVERE THUNDERSTORMS.  PERSONS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER AS THUNDERSTORMS DEVELOP THIS AFTERNOON AND EVENING.

STAY TUNED FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

PM/RD/FLH

WWUS35KWBC,T
Special weather statement, Jul 26, 12:42 PM EDT, 3 hours 29 minutes before
PAZ001>006-013>015-262300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1240 PM EDT MON JUL 26 1993

...TORNADO WATCH FOR THE WESTERN HALF OF PENNSYLVANIA TIL 7PM EDT...

A TORNADO WATCH HAS BEEN ISSUED TIL 7PM EDT FOR ALL OF WESTERN
PENNSYLVANIA.  THIS INCLUDES THE SURROUNDING CITIES OF PITTSBURGH...
ERIE...FRANKLIN...DUBOIS...BRADFORD...CLEARFIELD...STATE COLLEGE...
CHAMBERSBURG...ALTOONA...JOHNSTOWN...AND SOMERSET.

A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES AND
SEVERE THUNDERSTORMS.  PERSONS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER AS THUNDERSTORMS DEVELOP THIS AFTERNOON AND EVENING.

STAY TUNED FOR LATER STATEMENTS OR POSSIBLE WARNINzGS.

PM/RD/FLH

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 2:02 PM EDTSevere Thunderstorm WarningPBZWashington43 min
Jul 26, 2:26 PM EDTSevere Thunderstorm WarningPBZAllegheny, Westmoreland64 min
Jul 26, 2:26 PM EDTSevere Thunderstorm WarningPBZGreene64 min
Jul 26, 2:26 PM EDTSevere Thunderstorm WarningPBZClarion64 min
Jul 26, 3:05 PM EDTSevere Thunderstorm WarningPBZSomerset40 min
Jul 26, 3:12 PM EDTSevere Thunderstorm WarningPBZJefferson48 min
Jul 26, 3:30 PM EDTSevere Thunderstorm WarningPBZArmstrong, Clarion30 min
Jul 26, 3:57 PM EDTSevere Thunderstorm WarningPBZIndiana, Jefferson48 min
Jul 26, 4:18 PM EDTSevere Thunderstorm WarningPBZClarion57 min
Jul 26, 6:03 PM EDTSevere Thunderstorm WarningPBZIndiana42 min
Jul 26, 6:54 PM EDTSevere Thunderstorm WarningPBZCambria66 min
Jul 26, 7:07 PM EDTSevere Thunderstorm WarningPBZAllegheny, Westmoreland53 min
Jul 26, 7:54 PM EDTSevere Thunderstorm WarningPBZWashington51 min

Nearby

Tornado Warnings in Pennsylvania, 1993Every tornado warning in 1993Tornadoes 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.