Alert archive / Pennsylvania / Tornado Warnings in 2007

Tornado Warning 4, NWS Philadelphia/Mount Holly

August 17, 2007Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Aug 17, 2007, 2:19 PM EDT for Carbon County, Pennsylvania. It was in force for 26 min. 6 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
Aug 17, 2007, 2:19 PM EDT (18:19 UTC)
Expired
Aug 17, 2007, 2:45 PM EDT
In force
26 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Carbon County, PA

What was reported inside it

TimeReportWhereRemark
Aug 17, 2:20 PM EDTTSTM WND DMG2 Nw Jim Thorpe, PAEMERGENCY MANAGEMENT OFFICIALS REPORTED TREES DOWN AND WIRES DOWN ACROSS SOME ROADS IN SEVERAL PARTS OF THE COUNTY.
Aug 17, 2:20 PM EDTHAIL 1.75Jim Thorpe, PAGOLF BALL SIZE HAIL DAMAGED CARS AND PUNCHED HOLES IN THE SIDING OF SOME BUILDINGS.
Aug 17, 2:20 PM EDTHAIL 1.75Nesquehoning, PAHAIL TO THE SIZE OF GOLF BALLS WAS REPORTED AT THE 911 CENTER IN NESQUEHONING. THE HAIL WAS COVERING THE PARKING LOT AND DAMAGED CARS.
Aug 17, 2:40 PM EDTTSTM WND DMGJim Thorpe, PALARGE TREE LIMBS DOWN IN JIM THORPE. AT THE TIME OF REPORT, HALF INCH HAIL WAS FALLING.
Aug 17, 2:42 PM EDTTSTM WND GST 70Lehighton, PATHUNDERSTORM WINDS WERE ESTIMATED TO BE 70 MPH IN LEHIGHTON WITH A ROTATING WALL CLOUD REPORTED. TREES AND WIRES DOWN.
Aug 17, 2:42 PM EDTHAIL 1Lehighton, PAQUARTER SIZE HAIL REPORTED IN LEIGHTON.

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
Aug 17, 1:37 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.3 hours before the alert went out and 250 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 12:00Z on 2007-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 352 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 12:00Z on 2007-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
352 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1022 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
48 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 
WFUS51 KPHI 171819
TORPHI
PAC025-171845-
/O.NEW.KPHI.TO.W.0004.070817T1819Z-070817T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
219 PM EDT FRI AUG 17 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN CARBON COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 245 PM EDT

* AT 216 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  NESQUEHONING...OR ABOUT 26 MILES SOUTH OF WILKES-BARRE...MOVING
  EAST AT 65 MPH.

* THE TORNADO WILL BE NEAR...
  LEHIGHTON BY 225 PM EDT...
  BELTZVILLE STATE PARK BY 230 PM EDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FRIDAY
EVENING FOR NORTHERN DELAWARE AND NEW JERSEY AND EASTERN
PENNSYLVANIA.

LAT...LON 4094 7592 4086 7552 4075 7576 4081 7590
      4085 7594 4087 7596 4088 7597
TIME...MOT...LOC 1819Z 291DEG 57KT 4085 7582

$$

JJM

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 1:48 PM EDTSevere Thunderstorm WarningPHIChester72 min
Aug 17, 2:07 PM EDTSevere Thunderstorm WarningPHICarbon68 min
Aug 17, 2:14 PM EDTTornado WarningPHIChester46 min
Aug 17, 2:20 PM EDTSevere Thunderstorm WarningPHINorthampton70 min
Aug 17, 2:36 PM EDTSevere Thunderstorm WarningPHIDelaware54 min
Aug 17, 2:41 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton79 min
Aug 17, 2:43 PM EDTSevere Thunderstorm WarningPHIBucks62 min
Aug 17, 2:45 PM EDTTornado WarningPHICarbon, Northampton45 min
Aug 17, 2:54 PM EDTSevere Thunderstorm WarningPHILehigh66 min
Aug 17, 4:42 PM EDTSevere Thunderstorm WarningPHICarbon19 min
Aug 17, 4:45 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton60 min
Aug 17, 4:51 PM EDTSevere Thunderstorm WarningPHILehigh, Northampton43 min
Aug 17, 5:17 PM EDTSevere Thunderstorm WarningPHIBucks58 min
Aug 17, 7:56 PM EDTSevere Thunderstorm WarningPHIMontgomery19 min

Nearby

Tornado Warnings in Pennsylvania, 2007Every tornado warning in 2007Tornadoes in 2007

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.