Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 216, NWS Philadelphia/Mount Holly

August 25, 2007Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 25, 2007, 6:17 PM EDT for Carbon County, Pennsylvania. It was in force for 58 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: Aug 25, 2007, 6:17 PM EDT (22:17 UTC)
Expired: Aug 25, 2007, 7:15 PM EDT
In force: 58 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Carbon County, PA

The radar

The Binghamton radar (KBGM), 148 km from the middle of the area, began a volume at 22:21 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

Time	Report	Where	Remark
Aug 25, 6:30 PM EDT	HAIL 0.75	Lehighton, PA
Aug 25, 6:40 PM EDT	TSTM WND DMG	Beltzville State Park, PA	TREES DOWN.
Aug 25, 6:40 PM EDT	TSTM WND GST 65	Beltzville State Park, PA

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 25, 5:58 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.3 hours before the alert went out and 236 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: 1539 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 252217
SVRPHI
PAC025-252315-
/O.NEW.KPHI.SV.W.0216.070825T2217Z-070825T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
617 PM EDT SAT AUG 25 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 715 PM EDT

* AT 614 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR NEW MAHONING...OR ABOUT 23 MILES NORTHWEST
  OF ALLENTOWN...AND MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NESQUEHONING BY 625 PM EDT...
  NESQUEHONING BY 630 PM EDT...
  LEHIGHTON AND JIM THORPE BY 645 PM EDT...
  JIM THORPE BY 650 PM EDT...
  PALMERTON BY 700 PM EDT...
  BELTZVILLE STATE PARK BY 710 PM EDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST MARYLAND AND EASTERN PENNSYLVANIA.

LAT...LON 4104 7556 4097 7554 4095 7557 4094 7557
      4085 7550 4082 7549 4078 7568 4074 7577
      4081 7589 4085 7594 4086 7594
TIME...MOT...LOC 2217Z 239DEG 11KT 4079 7582

$$

NIERENBERG

1 follow-up statement

000 
WWUS51 KPHI 252244
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
644 PM EDT SAT AUG 25 2007

PAC025-252315-
/O.CON.KPHI.SV.W.0216.000000T0000Z-070825T2315Z/
CARBON PA-
644 PM EDT SAT AUG 25 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CARBON COUNTY...

AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL 
MOVING ACROSS SOUTHERN CARBON COUNTY. THE STORMS WERE MOVING 
NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT 
LEHIGHTON...WEISSPORT...BOWMANSTOWN...PARRYVILLE...PALMERTON AND 
BELTZVILLE STATE PARK.

HAIL UP TO THREE QUARTERS INCHES IN DIAMETER HAS BEEN REPORTED IN 
LEHIGHTON AND FOREST INN AND THERE WERE TREES DOWN IN BELTZVILLE 
STATE PARK.  IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE 
ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST MARYLAND AND EASTERN PENNSYLVANIA.

LAT...LON 4104 7556 4097 7554 4095 7557 4094 7557
      4085 7550 4082 7549 4078 7568 4074 7577
      4081 7589 4085 7594 4086 7594
TIME...MOT...LOC 2240Z 239DEG 11KT 4083 7574

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 6:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	63 min
Aug 25, 6:33 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	57 min
Aug 25, 7:40 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	65 min
Aug 25, 7:53 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh	67 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; radar from the NEXRAD Level II archive.