Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 194, NWS Philadelphia/Mount Holly

August 17, 2007Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 17, 2007, 2:07 PM EDT for Carbon County, Pennsylvania. It was in force for 68 min. 8 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, 2:07 PM EDT (18:07 UTC)
Expired: Aug 17, 2007, 3:15 PM EDT
In force: 68 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

Time	Report	Where	Remark
Aug 17, 2:20 PM EDT	TSTM WND DMG	2 Nw Jim Thorpe, PA	EMERGENCY MANAGEMENT OFFICIALS REPORTED TREES DOWN AND WIRES DOWN ACROSS SOME ROADS IN SEVERAL PARTS OF THE COUNTY.
Aug 17, 2:20 PM EDT	HAIL 1.75	Jim Thorpe, PA	GOLF BALL SIZE HAIL DAMAGED CARS AND PUNCHED HOLES IN THE SIDING OF SOME BUILDINGS.
Aug 17, 2:20 PM EDT	HAIL 1.75	Nesquehoning, PA	HAIL 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 EDT	TSTM WND DMG	Jim Thorpe, PA	LARGE TREE LIMBS DOWN IN JIM THORPE. AT THE TIME OF REPORT, HALF INCH HAIL WAS FALLING.
Aug 17, 2:42 PM EDT	TSTM WND GST 70	Lehighton, PA	THUNDERSTORM WINDS WERE ESTIMATED TO BE 70 MPH IN LEHIGHTON WITH A ROTATING WALL CLOUD REPORTED. TREES AND WIRES DOWN.
Aug 17, 2:42 PM EDT	HAIL 1	Lehighton, PA	QUARTER SIZE HAIL REPORTED IN LEIGHTON.
Aug 17, 2:50 PM EDT	HAIL 2	Palmerton, PA	2-INCH DIAMETER HAIL WAS REPORTED IN PALMERTON.
Aug 17, 3:05 PM EDT	HAIL 1	Palmerton, PA	QUARTER SIZED HAIL REPORTED IN PALMERTON.

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.

Issued	Product	Office	Lasted
Aug 17, 1:37 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.1 hours before the alert went out and 248 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 120 J/kg
Mixed-layer CIN: -267 J/kg
Mixed-layer LCL: 1465 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 171807
SVRPHI
PAC025-171915-
/O.NEW.KPHI.SV.W.0194.070817T1807Z-070817T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
207 PM EDT FRI AUG 17 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 315 PM EDT

* AT 200 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 10 MILES WEST OF
  WEATHERLY...OR ABOUT 24 MILES SOUTH OF WILKES-BARRE...AND MOVING
  EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NESQUEHONING AND WEATHERLY BY 215 PM EDT...
  6 MILES NORTH OF NEW MAHONING BY 220 PM EDT...
  JIM THORPE AND LEHIGHTON BY 225 PM EDT...
  BELTZVILLE STATE PARK AND PALMERTON BY 235 PM EDT...

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

LAT...LON 4102 7570 4082 7551 4075 7580 4081 7588
      4081 7589 4091 7600 4093 7596 4096 7588
      4097 7586
TIME...MOT...LOC 1807Z 281DEG 33KT 4091 7593

$$

RNS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 1:48 PM EDT	Severe Thunderstorm Warning	PHI	Chester	72 min
Aug 17, 2:14 PM EDT	Tornado Warning	PHI	Chester	46 min
Aug 17, 2:19 PM EDT	Tornado Warning	PHI	Carbon	26 min
Aug 17, 2:20 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	70 min
Aug 17, 2:36 PM EDT	Severe Thunderstorm Warning	PHI	Delaware	54 min
Aug 17, 2:41 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	79 min
Aug 17, 2:43 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	62 min
Aug 17, 2:45 PM EDT	Tornado Warning	PHI	Carbon, Northampton	45 min
Aug 17, 2:54 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh	66 min
Aug 17, 4:42 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	19 min
Aug 17, 4:45 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	60 min
Aug 17, 4:51 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	43 min
Aug 17, 5:17 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	58 min
Aug 17, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Montgomery	19 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2007 Every severe thunderstorm warning 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.