Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS State College, PA

May 25, 1994Berks County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 25, 1994, 4:44 PM EDT for Berks County, Pennsylvania. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
May 25, 1994, 4:44 PM EDT (20:44 UTC)
Expired
May 25, 1994, 5:45 PM EDT
In force
61 min
Issued by
NWS State College, PA
Area
Whole counties

County Berks County, PA

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 8.7 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 1994-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 255 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 1994-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
255 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1328 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
181 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.

000 
TTAA00 KABE 252045 RRA
SVRABE
PAC011-252145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ALLENTOWN PA
444 PM EDT WED MAY 25 1994
 
THE NATIONAL WEATHER SERVICE IN ALLENTOWN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN EAST CENTRAL PENNSYLVANIA
 
   ...BERKS COUNTY
 
AT 445PM RADAR INDICATED A SEVERE THUNDERSTORM JUST TO THE NORTHWEST OF
READING AS WELL AS OVER SOUTHERN BERKS COUNTY. MOVEMENT NORTHEAST AT 35
MPH.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
LOEPER

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 3:36 PM EDTSevere Thunderstorm WarningCTPAdams, York69 min
May 25, 3:41 PM EDTSevere Thunderstorm WarningCTPLancaster64 min
May 25, 4:38 PM EDTSevere Thunderstorm WarningCTPLancaster37 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.