Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 2, NWS State College, PA

February 24, 20165 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Feb 24, 2016, 6:10 PM EST for 5 counties in Pennsylvania. It was in force for 80 min. 12 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Feb 24, 2016, 6:10 PM EST (23:10 UTC)
Expired
Feb 24, 2016, 7:30 PM EST
In force
80 min
Issued by
NWS State College, PA
Area
Storm-based polygon

Counties Cumberland County, PA, Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, York County, PA

The radar

The Sterling radar (KLWX), 154 km from the middle of the area, began a volume at 23:11 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.

What was reported inside it

TimeReportWhereRemark
Feb 24, 6:10 PM ESTTSTM WND DMGWellsville, PANUMEROUS TREES REPORTED DOWN COUNTYWIDE.
Feb 24, 6:24 PM ESTTSTM WND DMG1 Ne Spring Grove, PATREE DOWN ON A HOME ALONG ROUTE 116 IN JACKSON TWP.
Feb 24, 6:24 PM ESTTSTM WND DMG1 Se Progress, PATREES DOWN ACROSS EXIT RAMP AT I-83 AND UNION DEPOSIT RD.
Feb 24, 6:30 PM ESTTSTM WND DMG1 Nw Dallastown, PA5 TREES DOWN. AT LEAST ONE ON HOUSE
Feb 24, 6:35 PM ESTTSTM WND DMG1 N Manchester, PAROOF OFF A BARN IN EAST MANCHESTER TWP.
Feb 24, 6:43 PM ESTTSTM WND GST 60Marietta, PA
Feb 24, 6:45 PM ESTTSTM WND DMGMount Joy, PAROOFS DAMAGED ON SEVERAL STRUCTURES IN THE MOUNT JOY...ELIZABETHTOWN AND RHEEMS AREA.
Feb 24, 7:05 PM ESTTSTM WND DMGMyerstown, PATELEPHONE POLES DOWN ALONG HOUTZTOWN ROAD
Feb 24, 7:18 PM ESTTSTM WND DMGLancaster, PANUMEROUS TREES REPORTED DOWN COUNTYWIDE.
Feb 24, 7:32 PM ESTTSTM WND DMGWhite Horse, PASEVERAL BUILDINGS SUFFERED WIND DAMAGE
Feb 24, 7:32 PM ESTTSTM WND DMGWhite Horse, PASEVERAL BUILDINGS SUFFERED WIND DAMAGE. CONSIDERABLE DEBRIS.
Feb 24, 7:38 PM ESTTORNADOWhite Horse, PAEF-2 CONFIRMED. MAX WINDS 125 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Feb 24, 3:20 PM ESTTornado WatchSPC8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 75 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 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 495 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
382 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
495 m²/s²
0-3 km storm-relative helicity
559 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

391 
WUUS51 KCTP 242310
SVRCTP
PAC041-043-071-075-133-250030-
/O.NEW.KCTP.SV.W.0002.160224T2310Z-160225T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
610 PM EST WED FEB 24 2016

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LEBANON COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  NORTHEASTERN CUMBERLAND COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTHERN DAUPHIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 730 PM EST

* AT 607 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60 MPH.
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM MECHANICSBURG
  TO NEAR WESTMINSTER TO FAIRLAND...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WEIGELSTOWN...NEW CUMBERLAND...MOUNT JOY...ENOLA...MYERSTOWN...
  LEBANON...MANHEIM...ANNVILLE...LEMOYNE...MIDDLETOWN...
  HUMMELSTOWN...MILLERSVILLE...MECHANICSBURG...DALLASTOWN...
  HERSHEY...LOWER ALLEN...COLONIAL PARK...LANCASTER...PALMYRA AND
  YORK.

THIS INCLUDES THE FOLLOWING INTERSTATES...
 THE PENNSYLVANIA TURNPIKE FROM MILE MARKERS 229 TO 295.
 INTERSTATE 78 FROM MILE MARKERS 0 TO 8.
 INTERSTATE 81 FROM MILE MARKERS 53 TO 96.
 INTERSTATE 83 FROM MILE MARKERS 1 TO 50.
 INTERSTATE 283 FROM MILE MARKERS 0 TO 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE THUNDERSTORM WIND GUSTS ARE EXPECTED TO PRODUCE DAMAGE. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THIS AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4029 7715 4033 7691 4036 7694 4036 7702
      4056 7654 4014 7587 4011 7594 4004 7593
      3996 7599 3987 7599 3988 7600 3976 7606
      3973 7610 3972 7683
TIME...MOT...LOC 2307Z 223DEG 50KT 4021 7701 3957 7703 3910 7694 

$$

RXR
1 follow-up statement
703 
WWUS51 KCTP 250008
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
708 PM EST WED FEB 24 2016

PAC041-043-250017-
/O.CAN.KCTP.SV.W.0002.000000T0000Z-160225T0030Z/
CUMBERLAND PA-DAUPHIN PA-

708 PM EST WED FEB 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CUMBERLAND AND
SOUTHERN DAUPHIN COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4015 7659 4019 7659 4020 7657 4022 7658
      4055 7654 4014 7588 4011 7594 4005 7593
      3996 7599 3987 7599 3988 7600 3976 7606
      3976 7608 3973 7610 3973 7655
TIME...MOT...LOC 0007Z 223DEG 50KT 4079 7629 4015 7632 3968 7623 

$$

PAC071-075-133-250030-
/O.CON.KCTP.SV.W.0002.000000T0000Z-160225T0030Z/
LEBANON PA-YORK PA-LANCASTER PA-
708 PM EST WED FEB 24 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EST
FOR LEBANON...SOUTHEASTERN YORK AND LANCASTER COUNTIES...

AT 707 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
GIRARDVILLE TO LITITZ TO NEAR CONOWINGO...MOVING NORTHEAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
EAST PETERSBURG...MOUNT JOY...EPHRATA...MYERSTOWN...LEBANON...
MANHEIM...AKRON...CORNWALL...ANNVILLE...LITITZ...NEW HOLLAND...
MILLERSVILLE...WILLOW STREET...COLUMBIA...LANCASTER...
ELIZABETHTOWN...PALMYRA...RICHLAND...QUARRYVILLE AND SMITHVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4015 7659 4019 7659 4020 7657 4022 7658
      4055 7654 4014 7588 4011 7594 4005 7593
      3996 7599 3987 7599 3988 7600 3976 7606
      3976 7608 3973 7610 3973 7655
TIME...MOT...LOC 0007Z 223DEG 50KT 4079 7629 4015 7632 3968 7623 

$$

EVANEGO

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 2:38 PM ESTFlash Flood WatchCTPAdams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more6 hr
Feb 24, 4:54 PM ESTAreal Flood AdvisoryCTPAdams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 9 more3 hr
Feb 24, 4:59 PM ESTSpecial Weather StatementCTPFranklin31 min
Feb 24, 5:18 PM ESTSpecial Weather StatementCTPAdams, Cumberland, Juniata, Mifflin, Perry27 min
Feb 24, 5:24 PM ESTSpecial Weather StatementCTPLancaster66 min
Feb 24, 5:36 PM ESTSevere Thunderstorm WarningCTPAdams, York39 min
Feb 24, 6:03 PM ESTAreal Flood AdvisoryCTPCentre, Clinton, Columbia, Lycoming, Montour, Northumberland and 5 more3 hr
Feb 24, 6:12 PM ESTSpecial Weather StatementCTPLycoming, Montour, Northumberland, Union33 min
Feb 24, 6:44 PM ESTSpecial Weather StatementCTPColumbia, Schuylkill, Sullivan31 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.