Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 163, NWS Philadelphia/Mount Holly

August 5, 20125 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 5, 2012, 4:12 PM EDT for 5 counties in Pennsylvania. It was in force for 78 min. 4 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 5, 2012, 4:12 PM EDT (20:12 UTC)
Expired: Aug 5, 2012, 5:30 PM EDT
In force: 78 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 143 km from the middle of the area, began a volume at 20:14 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 5, 4:40 PM EDT	TSTM WND DMG	Packer Twp, PA	TREES ON WIRES IN PACKER TWP.
Aug 5, 4:40 PM EDT	TSTM WND DMG	Weatherly, PA	TREES ON WIRES IN WEATHERLY BOROUGH.
Aug 5, 5:10 PM EDT	TSTM WND DMG	Fleetwood, PA	TREES... WIRES... AND POLES DOWN IN FLEETWOOD.
Aug 5, 5:19 PM EDT	TSTM WND DMG	Longswamp Twp, PA	LARGE TREE LIMBS ABOUT 6 INCHES IN DIAMETER DOWN IN LONGSWAMP TWP.

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 5, 3:36 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.2 hours before the alert went out and 223 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: 2201 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 477 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 3 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.

550 
WUUS51 KPHI 052012
SVRPHI
PAC011-025-077-089-095-052130-
/O.NEW.KPHI.SV.W.0163.120805T2012Z-120805T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
412 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
  LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
  THIS INCLUDES THE CITY OF ALLENTOWN...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF LEHIGHTON...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF MOUNT POCONO...

* UNTIL 530 PM EDT

* AT 409 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
  WERE LOCATED ALONG A LINE EXTENDING FROM NEAR WILKES-BARRE TO
  CONYNGHAM TO TOWER CITY...AND MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  STRAUSSTOWN AND WEATHERLY AROUND 440 PM EDT...
  ARROWHEAD LAKE AROUND 445 PM EDT...
  BLAKESLEE AND NESQUEHONING AROUND 450 PM EDT...
  LAKE HARMONY AND ALBRIGHTSVILLE AROUND 455 PM EDT...
  TOBYHANNA...NEW MAHONING AND CHRISTMANS AROUND 500 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR EASTERN PENNSYLVANIA.

&&

LAT...LON 4125 7513 4115 7514 4115 7508 4109 7503
      4108 7497 4099 7513 4093 7510 4041 7556
      4049 7643 4058 7602 4065 7599 4074 7577
      4091 7600 4101 7575 4109 7577 4113 7570
      4113 7564 4123 7554
TIME...MOT...LOC 2010Z 269DEG 25KT 4117 7586 4058 7647

$$

IOVINO

1 follow-up statement

078 
WWUS51 KPHI 052050
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
450 PM EDT SUN AUG 5 2012

PAC011-025-077-089-095-052130-
/O.CON.KPHI.SV.W.0163.000000T0000Z-120805T2130Z/
BERKS PA-LEHIGH PA-MONROE PA-CARBON PA-NORTHAMPTON PA-
450 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHAMPTON...CARBON...MONROE...LEHIGH AND NORTHERN BERKS
COUNTIES...

AT 447 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE 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 ARROWHEAD LAKE TO JIM 
THORPE TO STRAUSSTOWN...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TOBYHANNA...CHRISTMANS...ALBRIGHTSVILLE AND JIM THORPE BY 455 PM
  EDT...
  TOBYHANNA...CENTERPORT...NEW MAHONING AND POCONO PINES BY 500 PM
  EDT...
  SHOEMAKERSVILLE AND POCONO RACEWAY BY 505 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.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR 
EASTERN PENNSYLVANIA.

&&

LAT...LON 4125 7513 4115 7514 4115 7508 4109 7503
      4108 7497 4099 7513 4093 7510 4041 7556
      4049 7643 4058 7602 4065 7599 4074 7577
      4091 7600 4101 7575 4109 7577 4113 7570
      4113 7564 4123 7554
TIME...MOT...LOC 2049Z 269DEG 25KT 4117 7550 4059 7611

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 3:49 AM EDT	Flash Flood Watch	PHI	Carbon, Monroe, Northampton	16 hr
Aug 5, 12:15 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	45 min
Aug 5, 12:29 PM EDT	Special Weather Statement	PHI	Northampton	31 min
Aug 5, 1:03 PM EDT	Special Weather Statement	PHI	Monroe	27 min
Aug 5, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	67 min
Aug 5, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	77 min
Aug 5, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	68 min
Aug 5, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	74 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2012 Every severe thunderstorm warning in 2012

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.