Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 62, NWS State College, PA

August 11, 1992Berks County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 11, 1992, 3:02 PM EDT for Berks County, Pennsylvania. It was in force for 28 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 11, 1992, 3:02 PM EDT (19:02 UTC)
Expired
Aug 11, 1992, 3:30 PM EDT
In force
28 min
Issued by
NWS State College, PA
Area
Whole counties

County Berks County, PA

What was reported inside it

TimeReportWhereRemark
Aug 11, 3:12 PM EDTThunderstorm Wind 53Berks, PA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 7.0 hours before the alert went out and 162 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 1992-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 757 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 1992-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
757 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1177 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 11, 12:34 PM EDT, 2 hours 28 minutes before
PAZ006-008-009-013-111830-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA
1230 PM EDT TUE AUG 11 1992

...STRONG THUNDERSTORMS ARE MOVING INTO THE LOWER SUSQUEHANNA VALLEY...

AT 1230 PM HARRISBURG RADAR WAS SHOWING A LINE SHOWERS AND THUNDERSTORMS...
SOME WITH VERY HEAVY RAIN...EXTENDING FROM JUNIATA COUNTY IN THE SOUTH CENTRAL
MOUNTAINS TO SOMERSET COUNTY IN SOUTHWEST PENNSYLVANIA.  THE STRONGEST
STORMS WERE OVER HUNTINGDON...SOUTHERN MIFFLIN...AND SOUTHERN JUNIATA COUNTIES.

THE THUNDERSTORMS WERE MOVING TO THE EAST AT 30 MILES AN HOUR AND WILL BE
MOVING INTO PORTIONS OF THE LOWER SUSQUEHANNA VALLEY BY 100 PM.

NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS.  HOWEVER...A SEVERE
THUNDERSTORM WATCH IS IN EFFECT FOR PORTIONS OF THE SOUTH CENTRAL MOUNTAINS
AND LOWER SUSQUEHANNA VALLEY UNTIL 800PM...WHICH MEANS THAT CONDITIONS
ARE FAVORABLE FOR THUNDERSTORMS WITH LARGE HAIL...DANGEROUS LIGHTNING...AND
DAMAGING WINDS.
MATUSIEWICZ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 1:03 PM EDTSevere Thunderstorm WarningCTPFranklin57 min
Aug 11, 1:07 PM EDTSevere Thunderstorm WarningCTPBerks, Lehigh38 min
Aug 11, 1:25 PM EDTSevere Thunderstorm WarningCTPLehigh35 min
Aug 11, 1:26 PM EDTSevere Thunderstorm WarningCTPDauphin64 min
Aug 11, 1:37 PM EDTSevere Thunderstorm WarningCTPLancaster, Lebanon68 min
Aug 11, 1:44 PM EDTSevere Thunderstorm WarningCTPSchuylkill31 min
Aug 11, 1:55 PM EDTSevere Thunderstorm WarningCTPNorthumberland50 min
Aug 11, 2:05 PM EDTSevere Thunderstorm WarningCTPBerks, Schuylkill25 min
Aug 11, 2:21 PM EDTSevere Thunderstorm WarningCTPBerks, Lehigh39 min
Aug 11, 2:30 PM EDTSevere Thunderstorm WarningCTPBerks30 min
Aug 11, 2:33 PM EDTSevere Thunderstorm WarningCTPBerks27 min
Aug 11, 2:36 PM EDTSevere Thunderstorm WarningCTPSchuylkill39 min
Aug 11, 2:57 PM EDTSevere Thunderstorm WarningCTPCarbon, Schuylkill33 min
Aug 11, 3:00 PM EDTSevere Thunderstorm WarningCTPBerks, Lehigh30 min
Aug 11, 3:05 PM EDTSevere Thunderstorm WarningCTPSchuylkill25 min
Aug 11, 3:27 PM EDTSevere Thunderstorm WarningCTPLehigh, Northampton33 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1992Every severe thunderstorm warning in 1992

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.