Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 136, NWS Philadelphia/Mount Holly

July 28, 2012Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2012, 5:45 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 60 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: Jul 28, 2012, 5:45 PM EDT (21:45 UTC)
Expired: Jul 28, 2012, 6:45 PM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 134 km from the middle of the area, began a volume at 21:44 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	Remark
Jul 28, 6:09 PM EDT	HAIL 0.75	Lehighton, PA	PENNY SIZE HAIL REPORTED IN LEHIGHTON.

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
Jul 28, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.8 hours before the alert went out and 234 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: 424 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 705 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

231 
WUUS51 KPHI 282145
SVRPHI
PAC025-089-282245-
/O.NEW.KPHI.SV.W.0136.120728T2145Z-120728T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
545 PM EDT SAT JUL 28 2012

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...

* UNTIL 645 PM EDT

* AT 544 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  NESQUEHONING...OR 7 MILES NORTHWEST OF LEHIGHTON...AND MOVING
  NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WEATHERLY AROUND 550 PM EDT...
  WEATHERLY AROUND 555 PM EDT...
  JIM THORPE AND 6 MILES NORTHWEST OF LEHIGHTON AROUND 600 PM EDT...
  CHRISTMANS AROUND 630 PM EDT...
  CHRISTMANS AROUND 635 PM EDT...
  MECKESVILLE...ALBRIGHTSVILLE...PENN FOREST RESERVOIR AND 6 MILES
  SOUTH OF LAKE HARMONY AROUND 645 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 1000 PM EDT
SATURDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4111 7515 4077 7579 4086 7595 4091 7600
      4094 7595 4101 7575 4103 7574 4105 7577
      4124 7545 4125 7536
TIME...MOT...LOC 2145Z 243DEG 12KT 4089 7582

$$

HAYES

3 follow-up statements

307 
WWUS51 KPHI 282207
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
607 PM EDT SAT JUL 28 2012

PAC025-089-282245-
/O.CON.KPHI.SV.W.0136.000000T0000Z-120728T2245Z/
MONROE PA-CARBON PA-
607 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CARBON AND MONROE COUNTIES...

AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR JIM THORPE...OR 6 MILES NORTH OF LEHIGHTON...MOVING
NORTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES NORTHWEST OF BELTZVILLE STATE PARK BY 625 PM EDT...
  CHRISTMANS BY 630 PM EDT...
  MECKESVILLE...ALBRIGHTSVILLE...PENN FOREST RESERVOIR AND JONAS BY
  645 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1000 PM EDT
SATURDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4111 7515 4077 7579 4086 7595 4091 7600
      4094 7595 4101 7575 4103 7574 4105 7577
      4124 7545 4125 7536
TIME...MOT...LOC 2208Z 243DEG 12KT 4092 7573

$$

HAYES

699 
WWUS51 KPHI 282224
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
624 PM EDT SAT JUL 28 2012

PAC025-089-282245-
/O.CON.KPHI.SV.W.0136.000000T0000Z-120728T2245Z/
MONROE PA-CARBON PA-
624 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CARBON AND MONROE COUNTIES...

AT 623 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR CHRISTMANS...OR 8 MILES NORTH OF 
LEHIGHTON...MOVING NORTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHRISTMANS BY 630 PM EDT...
  MECKESVILLE...ALBRIGHTSVILLE...PENN FOREST RESERVOIR AND JONAS BY
  645 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1000 PM EDT
SATURDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4111 7515 4077 7579 4086 7595 4091 7600
      4094 7595 4101 7575 4103 7574 4105 7577
      4124 7545 4125 7536
TIME...MOT...LOC 2224Z 243DEG 12KT 4094 7567

$$

HAYES

237 
WWUS51 KPHI 282243
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
643 PM EDT SAT JUL 28 2012

PAC025-089-282253-
/O.EXP.KPHI.SV.W.0136.000000T0000Z-120728T2245Z/
MONROE PA-CARBON PA-
643 PM EDT SAT JUL 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR CARBON AND MONROE COUNTIES
WILL EXPIRE AT 645 PM EDT...

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 1000 PM EDT
SATURDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4111 7515 4077 7579 4086 7595 4091 7600
      4094 7595 4101 7575 4103 7574 4105 7577
      4124 7545 4125 7536
TIME...MOT...LOC 2243Z 243DEG 12KT 4097 7560

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 11:38 AM EDT	Special Weather Statement	PHI	Bucks	52 min
Jul 28, 12:27 PM EDT	Special Weather Statement	PHI	Monroe	63 min
Jul 28, 12:58 PM EDT	Areal Flood Advisory	PHI	Monroe	2 hr
Jul 28, 1:46 PM EDT	Special Weather Statement	PHI	Philadelphia	59 min
Jul 28, 2:18 PM EDT	Areal Flood Advisory	PHI	Bucks, Philadelphia	3 hr
Jul 28, 2:18 PM EDT	Special Weather Statement	PHI	Monroe	57 min
Jul 28, 2:33 PM EDT	Special Weather Statement	PHI	Chester	57 min
Jul 28, 3:33 PM EDT	Areal Flood Advisory	PHI	Northampton	81 min
Jul 28, 3:41 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	64 min
Jul 28, 4:47 PM EDT	Flash Flood Warning	PHI	Northampton	4 hr
Jul 28, 5:01 PM EDT	Areal Flood Advisory	PHI	Monroe	3 hr
Jul 28, 5:06 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	54 min
Jul 28, 5:14 PM EDT	Special Weather Statement	PHI	Northampton	61 min
Jul 28, 5:16 PM EDT	Special Weather Statement	PHI	Monroe	59 min
Jul 28, 5:38 PM EDT	Special Weather Statement	PHI	Carbon	67 min
Jul 28, 5:40 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	3 hr
Jul 28, 5:56 PM EDT	Areal Flood Advisory	PHI	Lehigh, Northampton	3 hr
Jul 28, 6:03 PM EDT	Special Weather Statement	PHI	Northampton	57 min
Jul 28, 6:28 PM EDT	Special Weather Statement	PHI	Berks, Lehigh, Northampton	62 min
Jul 28, 6:40 PM EDT	Special Weather Statement	PHI	Bucks	65 min
Jul 28, 6:45 PM EDT	Special Weather Statement	PHI	Carbon, Lehigh, Monroe, Northampton	60 min
Jul 28, 6:57 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	63 min
Jul 28, 7:01 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh	116 min
Jul 28, 7:37 PM EDT	Special Weather Statement	PHI	Chester	53 min
Jul 28, 7:40 PM EDT	Special Weather Statement	PHI	Northampton	65 min
Jul 28, 7:43 PM EDT	Special Weather Statement	PHI	Monroe	62 min
Jul 28, 7:56 PM EDT	Special Weather Statement	PHI	Bucks	64 min
Jul 28, 7:57 PM EDT	Severe Thunderstorm Warning	PHI	Chester	48 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.