Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 19, NWS State College, PA

June 9, 1993York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 9, 1993, 3:58 PM EDT for York County, Pennsylvania. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jun 9, 1993, 3:58 PM EDT (19:58 UTC)
Expired
Jun 9, 1993, 4:45 PM EDT
In force
47 min
Issued by
NWS State College, PA
Area
Whole counties

County York County, PA

The radar

The Sterling radar (KLWX), 124 km from the middle of the area, began a volume at 20:01 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 nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 8.0 hours before the alert went out and 198 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, Atlantic City In, NJ at 12:00Z on 1993-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 366 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, Atlantic City In, NJ at 12:00Z on 1993-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
366 J/kg
Mixed-layer CIN
-215 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 8, 10:39 PM EDTSevere Thunderstorm WarningCTPHuntingdon66 min
Jun 9, 12:35 AM EDTSevere Thunderstorm WarningCTPYork25 min
Jun 9, 12:19 PM EDTSevere Thunderstorm WarningCTPClinton26 min
Jun 9, 12:38 PM EDTSevere Thunderstorm WarningCTPBradford67 min
Jun 9, 3:15 PM EDTSevere Thunderstorm WarningCTPNorthampton
Jun 9, 4:36 PM EDTSevere Thunderstorm WarningCTPLancaster54 min
Jun 9, 7:25 PM EDTSevere Thunderstorm WarningCTPYork50 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; radar from the NEXRAD Level II archive.