Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 60, NWS State College, PA

June 18, 1994Snyder County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 18, 1994, 2:21 PM EDT for Snyder County, Pennsylvania. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1994, 2:21 PM EDT (18:21 UTC)
Expired
Jun 18, 1994, 3:30 PM EDT
In force
69 min
Issued by
NWS State College, PA
Area
Whole counties

County Snyder County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 6.4 hours before the alert went out and 259 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 1994-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1283 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 1994-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
1283 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1033 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 1:57 PM EDTSevere Thunderstorm WarningCTPCambria2 hr
Jun 18, 2:35 PM EDTSevere Thunderstorm WarningCTPCentre, Mifflin55 min
Jun 18, 3:30 PM EDTSevere Thunderstorm WarningCTPHuntingdon, Mifflin60 min
Jun 18, 4:13 PM EDTSevere Thunderstorm WarningCTPPike47 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1994Every severe thunderstorm warning in 1994

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.