Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 39, NWS State College, PA

May 10, 2000Dauphin County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 10, 2000, 3:19 PM EDT for Dauphin County, York County, Pennsylvania. It was in force for 86 min. 2 reports 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
May 10, 2000, 3:19 PM EDT (19:19 UTC)
Expired
May 10, 2000, 4:45 PM EDT
In force
86 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Dauphin County, PA, York County, PA

What was reported inside it

TimeReportWhereRemark
May 10, 3:40 PM EDTHail 0.75Spring Grove, PA
May 10, 4:02 PM EDTHail 1.75York, PAGolf ball sized hail was reported in York, with hail the size of quarters in New Salem.

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 10, 11:15 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.3 hours before the alert went out and 96 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 2000-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 786 joules per kilogram.LCLLFCEL10008507005003002001001 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 2000-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 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
786 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1290 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 101922
SVRCTP
PAC043-133-102045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
319 PM EDT WED MAY 10 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YORK COUNTY.
  DAUPHIN COUNTY.

* UNTIL 445 PM EDT.

* AT 315 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 11 MILES NORTH
  OF LINGLESTOWN TO 2 MILES NORTH OF PROGRESS TO 6                   
  MILES SOUTHEAST OF   GETTYSBURG...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BRESSLER-ENHAUT-OBERLIN...EAST BERLIN AT 325 PM EDT.               
  ABBOTTSTOWN...LEWISBERRY AT 330 PM.
  HANOVER...HIGHSPIRE AT 335 PM.
  DOVER...HUMMELSTOWN AT 340 PM.
  GOLDSBORO...MIDDLETOWN AT 345 PM.
  HERSHEY...SHILOH AT 350 PM.

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.

THE STORMS ALONG THE SOUTHERN PART OF THE LINE HAVE PRODUCED LARGE
HAIL IN ADAMS COUNTY.  THESE STORMS WILL MOVE ACROSS YORK COUNTY.

.END/

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 4:33 AM EDTSevere Thunderstorm WarningCTPElk57 min
May 10, 5:54 AM EDTSevere Thunderstorm WarningCTPMcKean36 min
May 10, 10:09 AM EDTSevere Thunderstorm WarningCTPLycoming51 min
May 10, 10:26 AM EDTSevere Thunderstorm WarningCTPSullivan64 min
May 10, 10:52 AM EDTSevere Thunderstorm WarningCTPElk53 min
May 10, 11:10 AM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, Perry65 min
May 10, 11:17 AM EDTSevere Thunderstorm WarningCTPClearfield58 min
May 10, 11:28 AM EDTSevere Thunderstorm WarningCTPMcKean62 min
May 10, 11:41 AM EDTSevere Thunderstorm WarningCTPCameron, Elk49 min
May 10, 11:42 AM EDTTornado WarningCTPDauphin33 min
May 10, 11:48 AM EDTSevere Thunderstorm WarningCTPYork57 min
May 10, 12:05 PM EDTSevere Thunderstorm WarningCTPLebanon, Schuylkill55 min
May 10, 12:14 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield46 min
May 10, 12:19 PM EDTSevere Thunderstorm WarningCTPColumbia56 min
May 10, 12:28 PM EDTSevere Thunderstorm WarningCTPBlair62 min
May 10, 12:32 PM EDTSevere Thunderstorm WarningCTPBedford, Somerset58 min
May 10, 12:40 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton65 min
May 10, 12:49 PM EDTSevere Thunderstorm WarningCTPTioga71 min
May 10, 12:58 PM EDTSevere Thunderstorm WarningCTPDauphin, Perry62 min
May 10, 1:05 PM EDTSevere Thunderstorm WarningCTPSchuylkill70 min
May 10, 1:09 PM EDTSevere Thunderstorm WarningCTPCumberland, Franklin66 min
May 10, 1:18 PM EDTSevere Thunderstorm WarningCTPHuntingdon57 min
May 10, 1:40 PM EDTSevere Thunderstorm WarningCTPNorthumberland65 min
May 10, 1:45 PM EDTSevere Thunderstorm WarningCTPClinton45 min
May 10, 1:58 PM EDTSevere Thunderstorm WarningCTPDauphin, Northumberland62 min
May 10, 2:12 PM EDTSevere Thunderstorm WarningCTPLycoming63 min
May 10, 2:17 PM EDTSevere Thunderstorm WarningCTPColumbia, Schuylkill58 min
May 10, 2:45 PM EDTSevere Thunderstorm WarningCTPAdams, Franklin60 min
May 10, 2:51 PM EDTSevere Thunderstorm WarningCTPSullivan39 min
May 10, 3:07 PM EDTSevere Thunderstorm WarningCTPColumbia, Northumberland68 min
May 10, 3:56 PM EDTSevere Thunderstorm WarningCTPLancaster64 min
May 10, 4:27 PM EDTTornado WarningCTPLancaster48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2000Every severe thunderstorm warning in 2000

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.