Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 89, NWS Pittsburgh, PA

August 2, 1993Clarion County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 2, 1993, 4:13 PM EDT for Clarion County, Pennsylvania. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1993, 4:13 PM EDT (20:13 UTC)
Expired
Aug 2, 1993, 5:15 PM EDT
In force
62 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Clarion County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.2 hours before the alert went out and 202 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, Buffalo Intl Airport, NY at 12:00Z on 1993-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1605 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, Buffalo Intl Airport, NY at 12:00Z on 1993-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
1605 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
783 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
1.4
Supercell composite
6.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 9:57 AM EDTSevere Thunderstorm WarningPBZButler63 min
Aug 2, 10:44 AM EDTSevere Thunderstorm WarningPBZClarion46 min
Aug 2, 11:07 AM EDTSevere Thunderstorm WarningPBZArmstrong68 min
Aug 2, 2:11 PM EDTSevere Thunderstorm WarningPBZBeaver34 min
Aug 2, 2:50 PM EDTSevere Thunderstorm WarningPBZButler55 min
Aug 2, 3:32 PM EDTSevere Thunderstorm WarningPBZArmstrong, Westmoreland58 min
Aug 2, 4:25 PM EDTSevere Thunderstorm WarningPBZIndiana65 min
Aug 2, 6:12 PM EDTSevere Thunderstorm WarningPBZCambria63 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1993Every 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.