Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 3, NWS State College, PA

February 24, 2016Lancaster County, Lebanon County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Feb 24, 2016, 7:30 PM EST for Lancaster County, Lebanon County, York County, Pennsylvania. It was in force for 45 min. 3 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, 7:30 PM EST (00:30 UTC)
Expired
Feb 24, 2016, 8:15 PM EST
In force
45 min
Issued by
NWS State College, PA
Area
Storm-based polygon

Counties Lancaster County, PA, Lebanon County, PA, York County, PA

The radar

The Dover AFB radar (KDOX), 134 km from the middle of the area, began a volume at 00:32 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, 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.5 hours before the alert went out and 155 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 2016-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 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, Washington/Dulle, VA at 00:00Z on 2016-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
27 J/kg
Mixed-layer CIN
-212 J/kg
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

038 
WUUS51 KCTP 250030
SVRCTP
PAC071-075-133-250115-
/O.NEW.KCTP.SV.W.0003.160225T0030Z-160225T0115Z/

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

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LEBANON COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTHEASTERN YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 815 PM EST

* AT 728 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 TO 70 MPH.
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEW
  BOSTON-MOREA TO NEAR PARADISE TO NEAR BEL AIR...AND MOVING
  NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEW HOLLAND...WILLOW STREET...EPHRATA...LANCASTER...AKRON...
  LITITZ...MILLERSVILLE...BAREVILLE...BRICKERVILLE...RICHLAND...
  WAKEFIELD...QUARRYVILLE...LEOLA...CHURCHTOWN...SMITHVILLE...
  LEACOCK...ADAMSTOWN...DELTA...PARADISE AND SCHAEFFERSTOWN.

THIS INCLUDES THE PENNSYLVANIA TURNPIKE FROM MILE MARKERS 274 TO 295.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. INTENSE THUNDERSTORM
LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES. 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 3973 7639 4040 7628 4036 7620 4014 7587
      4011 7594 4004 7593 3996 7599 3987 7599
      3988 7600 3976 7606 3976 7608 3973 7610
      3974 7612 3973 7612 3972 7618
TIME...MOT...LOC 0028Z 207DEG 61KT 4079 7617 3999 7609 3957 7631 

$$

RXR
1 follow-up statement
635 
WWUS51 KCTP 250113
SVSCTP

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

PAC071-075-133-250122-
/O.EXP.KCTP.SV.W.0003.000000T0000Z-160225T0115Z/
LEBANON PA-YORK PA-LANCASTER PA-
813 PM EST WED FEB 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEBANON...
SOUTHEASTERN YORK AND LANCASTER COUNTIES WILL EXPIRE AT 815 PM EST...
            
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER
HEAVY RAIN IS STILL POSSIBLE WITH THIS AREA THROUGH 900 PM.

LAT...LON 3973 7639 4040 7628 4036 7620 4014 7587
      4011 7594 4004 7593 3996 7599 3987 7599
      3988 7600 3976 7606 3976 7608 3973 7610
      3974 7612 3973 7612 3972 7618
TIME...MOT...LOC 0111Z 207DEG 61KT 4079 7617 3999 7609 3957 7631 

$$

DEVOIR

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 7:13 PM ESTAreal Flood AdvisoryCTPSchuylkill62 min
Feb 24, 7:14 PM ESTSpecial Weather StatementCTPSchuylkill46 min
Feb 24, 7:21 PM ESTTornado WarningCTPLancaster24 min
Feb 24, 7:43 PM ESTAreal Flood AdvisoryCTPLancaster62 min
Feb 24, 11:18 PM ESTAreal Flood AdvisoryCTPColumbia, Lycoming, Montour, Northumberland, Schuylkill, Sullivan and 2 more3 hr
Feb 24, 11:24 PM ESTRiver Flood WarningCTPCumberland, York17 hr
Feb 24, 11:44 PM ESTAreal Flood AdvisoryCTPAdams, Centre, Clinton, Cumberland, Dauphin, Juniata and 8 more3 hr
Feb 25, 2:00 AM ESTRiver Flood WarningCTPLebanon, Schuylkill20 hr
Feb 25, 2:43 AM ESTAreal Flood AdvisoryCTPLancaster, York4 hr
Feb 25, 2:54 AM ESTWinter Weather AdvisoryCTPCambria, McKean, Somerset, Warren28 hr
Feb 25, 5:48 AM ESTRiver Flood WarningCTPDauphin, Lebanon23 hr
Feb 25, 9:11 AM ESTRiver Flood WarningCTPLancaster, York10 hr

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.