Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 13, NWS State College, PA

April 8, 1998Lancaster County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 8, 1998, 3:25 PM EDT for Lancaster County, Pennsylvania. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 8, 1998, 3:25 PM EDT (19:25 UTC)
Expired
Apr 8, 1998, 4:25 PM EDT
In force
60 min
Issued by
NWS State College, PA
Area
Whole counties

County Lancaster County, PA

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.4 hours before the alert went out and 65 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, Phillips Aaf/Abe, MD at 12:00Z on 1998-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 1998-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
258 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

834 
WUUS01 KCTP 081924
SVRCTP
PAC071-082025-

BULLETIN- IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
325 PM EDT WED APR 8 1998

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 425 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN PENNSYLVANIA

   ...LANCASTER COUNTY
 
AT 325 PM EDT...A SEVERE THUNDERSTORM WAS INDICATED BY STATE
COLLEGE DOPPLER RADAR 28 MILES WEST OF LANCASTER OR 15 MILES
SOUTHWEST OF MARIETTA MOVING EAST AT 55 MPH.

THE STORM WILL PASS NEAR THE FOLLOWING LOCATIONS...
MARIETTA                         BY 335 PM EDT
MT JOY                           BY 340 PM EDT
SAFE HARBOR                      BY 345 PM EDT
MILLERSVILLE                     BY 350 PM EDT
HOLTWOOD                         BY 350 PM EDT
CONESTOGA                        BY 350 PM EDT
LANCASTER                        BY 350 PM EDT
STRASBURG                        BY 400 PM EDT
NEW HOLLAND                      BY 405 PM EDT
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE INDOORS AND STAY AWAY FROM WINDOWS.  HEAVY RAINS
FLOOD ROADS QUICKLY.  DONT DRIVE INTO AREAS WHERE WATER COVERS THE
ROAD.

NICOSIA/JUNG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 3:07 PM EDTSevere Thunderstorm WarningCTPAdams, York63 min
Apr 8, 5:54 PM EDTSevere Thunderstorm WarningCTPCambria, Somerset61 min
Apr 8, 5:57 PM EDTSevere Thunderstorm WarningCTPFulton33 min
Apr 8, 6:13 PM EDTSevere Thunderstorm WarningCTPFranklin47 min
Apr 8, 6:23 PM EDTSevere Thunderstorm WarningCTPBedford, Blair52 min
Apr 8, 6:23 PM EDTSevere Thunderstorm WarningCTPClearfield52 min
Apr 8, 6:32 PM EDTSevere Thunderstorm WarningCTPCameron, Clinton48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1998Every severe thunderstorm warning in 1998

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.