Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 252, NWS State College, PA

November 11, 1995Lycoming County, Montour County, Northumberland County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Nov 11, 1995, 7:12 PM EST for Lycoming County, Montour County, Northumberland County, Pennsylvania. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Nov 11, 1995, 7:12 PM EST (00:12 UTC)
Expired
Nov 11, 1995, 8:00 PM EST
In force
48 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Lycoming County, PA, Montour County, PA, Northumberland County, PA

The radar

The State College radar (KCCX), 102 km from the middle of the area, began a volume at 00:12 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.2 hours before the alert went out and 241 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, Washington/Dulle, VA at 00:00Z on 1995-11-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 1995-11-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 515 square meters per square second.1939587897117Sfc1 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
470 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
515 m²/s²
0-3 km storm-relative helicity
786 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 KCTP 120013 RRA
SVRCTP
PAC081-093-097-120100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
712 PM EST SAT NOV 11 1995
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN  PENNSYLVANIA
 
   ...SOUTHEASTERN LYCOMING COUNTY...MONTOUR COUNTY
   ...NORTHUMBERLAND COUNTY
 
AT 710 PM...DOPPLER WEATHER RADAR IN STATE COLLED SHOWED A LINE OF
SEVERE THUNDERSTORMS FROM NEAR PICTURE ROCKS IN SOUTHEAST LYCOMING
COUNTY SOUTHWARD THROUGH SUNBURY. THE LINE OF STORMS WILL REACH DANVILLE
BEFORE 730 PM...AND SHAMOKIN BY 730 PM.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
JUNG/NICOSIA

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 11, 7:20 PM ESTSevere Thunderstorm WarningCTPDauphin, Lancaster, Lebanon, York70 min
Nov 11, 7:20 PM ESTSevere Thunderstorm WarningCTPSchuylkill70 min
Nov 11, 7:52 PM ESTSevere Thunderstorm WarningCTPColumbia, Sullivan38 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning in 1995

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.