Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 73, NWS Philadelphia/Mount Holly

June 15, 2009Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 15, 2009, 2:33 PM EDT for Carbon County, Pennsylvania. It was in force for 57 min. 1 report 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: Jun 15, 2009, 2:33 PM EDT (18:33 UTC)
Expired: Jun 15, 2009, 3:30 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Carbon County, PA

The radar

The Binghamton radar (KBGM), 140 km from the middle of the area, began a volume at 18:36 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
Jun 15, 3:10 PM EDT	HAIL 0.88	Beltzville State Park, PA	FRANKLIN TOWNSHIP.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.6 hours before the alert went out and 169 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: 196 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 151833
SVRPHI
PAC025-151930-
/O.NEW.KPHI.SV.W.0073.090615T1833Z-090615T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
233 PM EDT MON JUN 15 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF LEHIGHTON...

* UNTIL 330 PM EDT

* AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS TO 60 MPH.  THIS STORM WAS LOCATED NEAR
  CHRISTMANS...OR 9 MILES NORTH OF LEHIGHTON...AND MOVING SOUTHEAST
  AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MECKESVILLE...NESQUEHONING...JIM THORPE...PENN FOREST RESERVOIR...
  NEW MAHONING...BELTZVILLE STATE PARK AND PALMERTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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.

&&

LAT...LON 4109 7561 4099 7551 4094 7557 4082 7549
      4079 7564 4075 7578 4094 7593 4095 7588
      4098 7584 4100 7575 4104 7577 4111 7566
TIME...MOT...LOC 1833Z 328DEG 19KT 4096 7568

$$

GORSE

1 follow-up statement

000 
WWUS51 KPHI 151907
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
307 PM EDT MON JUN 15 2009

PAC025-151930-
/O.CON.KPHI.SV.W.0073.000000T0000Z-090615T1930Z/
CARBON PA-
307 PM EDT MON JUN 15 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHERN CARBON COUNTY...

AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS TO 60 MPH.  THIS STORM WAS
LOCATED NEAR PALMERTON...OR 6 MILES EAST OF LEHIGHTON...MOVING 
SOUTHEAST AT 15 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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.

&&

LAT...LON 4095 7584 4096 7558 4094 7557 4082 7549
      4079 7564 4075 7578 4094 7593 4095 7588
TIME...MOT...LOC 1907Z 332DEG 15KT 4081 7560

$$

GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 3:16 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Northampton	59 min
Jun 15, 4:15 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	60 min
Jun 15, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	62 min
Jun 15, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	65 min
Jun 15, 6:37 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	53 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2009 Every severe thunderstorm warning in 2009

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.