Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 90, NWS Philadelphia/Mount Holly

June 9, 2011Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 9, 2011, 4:41 PM EDT for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It was in force for 64 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: Jun 9, 2011, 4:41 PM EDT (20:41 UTC)
Expired: Jun 9, 2011, 5:45 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 134 km from the middle of the area, began a volume at 20:44 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
Jun 9, 5:18 PM EDT	TSTM WND GST 60	Gilbert, PA
Jun 9, 5:18 PM EDT	HAIL 1	Gilbert, PA
Jun 9, 5:20 PM EDT	HAIL 0.25	Tobyhanna, 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
Jun 9, 2:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.7 hours before the alert went out and 199 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: 734 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 1935 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 28 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.

484 
WUUS51 KPHI 092041
SVRPHI
NJC037-PAC025-089-092145-
/O.NEW.KPHI.SV.W.0090.110609T2041Z-110609T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
441 PM EDT THU JUN 9 2011

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...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF MOUNT POCONO...
  NORTHERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 545 PM EDT

* AT 438 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 21 MILES NORTH OF HIGH POINT TO
  31 MILES NORTHWEST OF WHITE HAVEN...OR ALONG A LINE EXTENDING FROM
  25 MILES NORTHEAST OF MONTAGUE TO 21 MILES WEST OF
  WILKES-BARRE...AND MOVING EAST-SOUTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WHITE HAVEN AND WEATHERLY AROUND 515 PM EDT...
  NEW MAHONING AND NESQUEHONING AROUND 520 PM EDT...
  LEHIGHTON AND JIM THORPE AROUND 525 PM EDT...
  LAKE HARMONY...CHRISTMANS...BLAKESLEE AND ALBRIGHTSVILLE AROUND 530
  PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS 
IMMEDIATELY! LIGHTNING IS ONE OF NATURES GREATEST KILLERS. 
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4124 7446 4119 7444 4111 7491 4094 7527
      4076 7578 4092 7600 4100 7575 4105 7578
      4110 7577 4114 7570 4113 7564 4121 7557
      4125 7550 4126 7514 4116 7516 4115 7509
      4109 7501 4115 7491 4131 7480 4135 7468
TIME...MOT...LOC 2040Z 283DEG 38KT 4160 7451 4130 7625

$$

2 follow-up statements

546 
WWUS51 KPHI 092104
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
504 PM EDT THU JUN 9 2011

NJC037-PAC025-089-092145-
/O.CON.KPHI.SV.W.0090.000000T0000Z-110609T2145Z/
SUSSEX NJ-CARBON PA-MONROE PA-
504 PM EDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR MONROE...CARBON AND NORTHERN SUSSEX COUNTIES...

AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS APPROACHING THE WARNED AREA 
AND CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN 
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM 25 MILES NORTHEAST OF VERNON VALLEY TO 17 MILES NORTHWEST OF 
WHITE HAVEN...OR ALONG A LINE EXTENDING FROM 33 MILES NORTHEAST OF 
MONTAGUE TO WILKES-BARRE...MOVING EAST-SOUTHEAST AT 30 TO 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TRESCKOW AND BEAVER MEADOWS BY 510 PM EDT...
  NEW MAHONING...WHITE HAVEN...WEATHERLY AND SUMMIT HILL BY 520 PM
  EDT...
  JIM THORPE BY 525 PM EDT...
  LAKE HARMONY...CHRISTMANS AND BLAKESLEE BY 530 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4124 7446 4119 7444 4111 7491 4094 7527
      4076 7578 4092 7600 4100 7575 4105 7578
      4110 7577 4114 7570 4113 7564 4121 7557
      4125 7550 4126 7514 4116 7516 4115 7509
      4109 7501 4115 7491 4131 7480 4135 7468
TIME...MOT...LOC 2103Z 283DEG 38KT 4154 7419 4125 7594

$$

264 
WWUS51 KPHI 092126
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
526 PM EDT THU JUN 9 2011

NJC037-PAC025-089-092145-
/O.CON.KPHI.SV.W.0090.000000T0000Z-110609T2145Z/
SUSSEX NJ-CARBON PA-MONROE PA-
526 PM EDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR MONROE...CARBON AND NORTHERN SUSSEX COUNTIES...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS MOVING INTO NORTHERN SUSSEX 
COUNTY NEW JERSEY AND NORTHERN MONROE AND CARBON COUNTIES IN 
PENNSYLVANIA...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING 
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM HIGH POINT TO 22 MILES NORTHWEST OF TRESCKOW...OR 
ALONG A LINE EXTENDING FROM 10 MILES NORTHEAST OF MONTAGUE TO 28 
MILES SOUTHWEST OF WILKES-BARRE...MOVING SOUTHEAST AT 25 TO 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TOBYHANNA AND CANADENSIS BY 530 PM EDT...
  HAINESVILLE AND MOUNTAINHOME BY 535 PM EDT...
  PARADISE VALLEY...BLAKESLEE...WHITE HAVEN AND POCONO PINES BY 540
  PM EDT...
  ALPINE MOUNTAIN AND SUSSEX BY 545 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4124 7446 4119 7444 4111 7491 4094 7528
      4076 7578 4092 7599 4100 7576 4110 7577
      4114 7570 4113 7564 4121 7557 4125 7550
      4126 7514 4116 7516 4115 7509 4109 7503
      4109 7500 4115 7491 4131 7480 4135 7468
TIME...MOT...LOC 2125Z 358DEG 22KT 4134 7462 4104 7635

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	62 min
Jun 9, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	66 min
Jun 9, 6:44 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	61 min
Jun 9, 7:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	48 min
Jun 9, 7:42 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Montgomery, Philadelphia	33 min
Jun 9, 3:33 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	16 min
Jun 9, 5:34 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	41 min
Jun 9, 7:17 PM EDT	Special Weather Statement	PHI	Monmouth	43 min
Jun 9, 7:21 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	39 min
Jun 9, 7:46 PM EDT	Special Marine Warning	PHI		59 min
Jun 9, 7:57 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	18 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011 Severe Thunderstorm Warnings in New Jersey, 2011 Every severe thunderstorm warning in 2011

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.