Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 71, NWS Pittsburgh, PA

July 26, 1993Washington County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 26, 1993, 7:54 PM EDT for Washington County, Pennsylvania. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jul 26, 1993, 7:54 PM EDT (23:54 UTC)
Expired
Jul 26, 1993, 8:45 PM EDT
In force
51 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Washington County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.9 hours before the alert went out and 28 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

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
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, 4:11 PM EDTTornado WarningPBZIndiana49 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

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.