Alert archive / Pennsylvania / Tornado Warnings in 1998

Tornado Warning 21, NWS Pittsburgh, PA

June 2, 1998Greene County, Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jun 2, 1998, 9:13 PM EDT for Greene County, Pennsylvania. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 2, 1998, 9:13 PM EDT (01:13 UTC)
Expired
Jun 2, 1998, 10:00 PM EDT
In force
47 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Greene County, PA

The radar

The Pittsburgh radar (KPBZ), 75 km from the middle of the area, began a volume at 01:16 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 2, 4:15 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 1.2 hours before the alert went out and 63 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 00:00Z on 1998-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1770 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 00:00Z on 1998-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 352 square meters per square second.1939587897Sfc1 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
1770 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1107 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
352 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
4.1
Supercell composite
19.4

Open this sounding in Storm Lab

The text

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

421 
WFUS1 KPIT 030112 RRA
TORPIT
PAC059-030200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
913 PM EDT TUE JUN 2 1998

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME EASTERN GREENE COUNTY IN SOUTHWESTERN PENNSYLVANIA.

* UNTIL 1000 PM EDT.

* AT 912 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR THE TOWNS OF ISABELLA AND JACOBS FERRY...
  MOVING SOUTH AROUND 35 MPH.

* THE TORNADO WILL BE MOVING SOUTH ALONG ...
  THE MONONGAHELA RIVER

.

<<CALL-TO-ACTION>>GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON
THE LOWEST FLOOR

.END/PALKO/MURPHY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 8:07 PM EDTTornado WarningPBZAllegheny53 min
Jun 2, 8:15 PM EDTTornado WarningPBZWashington60 min
Jun 2, 8:40 PM EDTTornado WarningPBZFayette50 min
Jun 2, 8:48 PM EDTTornado WarningPBZWestmoreland57 min
Jun 2, 9:23 PM EDTTornado WarningPBZFayette52 min

Nearby

Tornado Warnings in Pennsylvania, 1998Every tornado warning in 1998Tornadoes in 1998

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; radar from the NEXRAD Level II archive.