Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 124, NWS Philadelphia/Mount Holly

July 26, 2012Carbon County, Lehigh County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 26, 2012, 5:46 PM EDT for Carbon County, Lehigh County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 74 min. 7 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: Jul 26, 2012, 5:46 PM EDT (21:46 UTC)
Expired: Jul 26, 2012, 7:00 PM EDT
In force: 74 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 21:47 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 26, 5:56 PM EDT	TSTM WND DMG	Palmerton, PA	TREES AND POWER LINES DOWN
Jul 26, 6:13 PM EDT	TSTM WND GST 62	Bushkill Twp, PA
Jul 26, 6:22 PM EDT	TSTM WND DMG	Bath, PA	TREES DOWN
Jul 26, 6:25 PM EDT	TSTM WND GST 57	Forks Twp, PA	POWER OUTAGES REPORTED AS WELL
Jul 26, 6:25 PM EDT	HAIL 0.75	Tatamy, PA
Jul 26, 6:40 PM EDT	TSTM WND DMG	Columbia, NJ	ONE TREE DOWN BLOCKING RTE 94
Jul 26, 7:02 PM EDT	TSTM WND DMG	Sussex, NJ	SOME TREES DOWN AND POWER OUTAGES THROUGHOUT THE COUNTY

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 26, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.8 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1459 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 160 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.

252 
WUUS51 KPHI 262146
SVRPHI
NJC037-041-PAC025-077-095-262300-
/O.NEW.KPHI.SV.W.0124.120726T2146Z-120726T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
546 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  THIS INCLUDES THE CITY OF EASTON...
  SOUTHERN CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  THIS INCLUDES THE CITIES OF...MONTAGUE...NEWTON...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 700 PM EDT

* AT 545 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 SCRANTON TO HAZLETON IN
  PENNSYLVANIA...AND MOVING EAST AT 55 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEFFS...COFFEETOWN...EMERALD AND WALNUTPORT AROUND 550 PM EDT...
  NORTHAMPTON AND BEERSVILLE AROUND 555 PM EDT...
  BETHLEHEM AND BATH AROUND 600 PM EDT...
  OLD ORCHARD AND WIND GAP AROUND 605 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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

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 1100 PM EDT
THURSDAY EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4121 7437 4098 7463 4093 7465 4090 7470
      4091 7477 4082 7483 4072 7496 4060 7518
      4068 7589 4074 7577 4083 7590 4080 7562
      4087 7528 4108 7497 4109 7499 4117 7489
      4129 7484 4135 7476 4136 7469
TIME...MOT...LOC 2145Z 278DEG 56KT 4130 7569 4080 7569

$$

IOVINO

1 follow-up statement

964 
WWUS51 KPHI 262215
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
615 PM EDT THU JUL 26 2012

NJC037-041-PAC025-077-095-262300-
/O.CON.KPHI.SV.W.0124.000000T0000Z-120726T2300Z/
WARREN NJ-SUSSEX NJ-LEHIGH PA-CARBON PA-NORTHAMPTON PA-
615 PM EDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHAMPTON...SOUTHERN CARBON...NORTHERN LEHIGH...SUSSEX AND
WARREN COUNTIES...

AT 613 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 THE POCONOS TO THE LEHIGH 
VALLEY...MOVING EAST AT 55 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  FORKS...WILSON...WEST EASTON AND TATAMY BY 620 PM EDT...
  HARMONY...PORTLAND...EAST BANGOR AND PHILLIPSBURG BY 625 PM EDT...
  ROXBURG AND COLUMBIA BY 630 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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

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 1100 PM EDT
THURSDAY EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM EDT FRIDAY
MORNING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 4121 7437 4098 7463 4093 7465 4090 7470
      4091 7477 4082 7483 4072 7496 4060 7518
      4068 7589 4074 7577 4083 7590 4080 7562
      4087 7528 4108 7497 4109 7499 4117 7489
      4129 7484 4135 7476 4136 7469
TIME...MOT...LOC 2214Z 278DEG 46KT 4116 7529 4067 7536

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 7:41 AM EDT	Special Weather Statement	PHI	Carbon, Lehigh, Monroe, Northampton	64 min
Jul 26, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	54 min
Jul 26, 6:03 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	42 min
Jul 26, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	95 min
Jul 26, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	83 min
Jul 26, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia	89 min
Jul 26, 5:26 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	18 hr
Jul 26, 6:54 AM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	66 min
Jul 26, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex	76 min
Jul 26, 7:28 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	63 min
Jul 26, 7:31 PM EDT	Special Marine Warning	PHI		89 min
Jul 26, 7:37 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Ocean	83 min
Jul 26, 7:58 PM EDT	Special Marine Warning	PHI		2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2012 Severe Thunderstorm Warnings in New Jersey, 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.