Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 62, NWS Philadelphia/Mount Holly

July 2, 2014Lehigh County, Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2014, 4:03 PM EDT for Lehigh County, Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 57 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: Jul 2, 2014, 4:03 PM EDT (20:03 UTC)
Expired: Jul 2, 2014, 5:00 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 20:03 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 2, 4:07 PM EDT	TSTM WND DMG	Smithfield Twp, PA	TREES DOWN ALONG ACE LANE.
Jul 2, 4:47 PM EDT	TSTM WND DMG	Frankford Twp, NJ	TREE FELL ONTO A HOUSE.
Jul 2, 5:00 PM EDT	TSTM WND DMG	Allamuchy Twp, NJ	WIRES DOWN.
Jul 2, 5:00 PM EDT	TSTM WND DMG	Independence Twp, NJ	WIRES DOWN.

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 2, 11:14 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 2, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 187 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: 1089 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 74 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.

785 
WUUS51 KPHI 022003
SVRPHI
NJC037-041-PAC077-089-095-022100-
/O.NEW.KPHI.SV.W.0062.140702T2003Z-140702T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT WED JUL 2 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  EAST CENTRAL LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
  SOUTHERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 500 PM EDT

* AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  DINGMANS FERRY TO STROUDSBURG TO CATASAUQUA...MOVING NORTHEAST AT
  20 MPH. THESE STORMS ARE CAPABLE OF PRODUCING ONE INCH DIAMETER
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WIND GAP AND WERRY LAKE AROUND 410 PM EDT...
  WERRY LAKE AND PEN ARGYL AROUND 415 PM EDT...
  HAINESVILLE AND DELAWARE WATER GAP AROUND 420 PM EDT...
  EAST BANGOR AND BELFAST AROUND 425 PM EDT...
  OLD ORCHARD AND GLENDON AROUND 430 PM EDT...
  WILSON AND TATAMY AROUND 435 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 4126 7447 4070 7507 4059 7553 4080 7553
      4082 7548 4086 7551 4101 7544 4115 7513
      4114 7508 4109 7502 4118 7489 4124 7486
      4131 7458
TIME...MOT...LOC 2003Z 242DEG 19KT 4118 7489 4099 7521
          4066 7546

$$

FORECASTER:
SFJ

3 follow-up statements

285 
WWUS51 KPHI 022022
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
422 PM EDT WED JUL 2 2014

PAC077-022031-
/O.CAN.KPHI.SV.W.0062.000000T0000Z-140702T2100Z/
LEHIGH PA-
422 PM EDT WED JUL 2 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LEHIGH COUNTY IS
CANCELLED...

THE THUNDERSTORM MOVED OUT OF THE WARNED AREA...THUS THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4126 7447 4070 7507 4065 7536 4074 7549
      4085 7545 4114 7508 4109 7502 4118 7489
      4124 7486 4131 7458
TIME...MOT...LOC 2021Z 242DEG 20KT 4123 7477 4104 7509
          4071 7534

$$

NJC037-041-PAC089-095-022100-
/O.CON.KPHI.SV.W.0062.000000T0000Z-140702T2100Z/
WARREN NJ-SUSSEX NJ-MONROE PA-NORTHAMPTON PA-
422 PM EDT WED JUL 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHAMPTON...SOUTHEASTERN MONROE...SUSSEX AND WARREN COUNTIES...

AT 418 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 HAINESVILLE TO SHAWNEE TO
STEUBEN...OR ALONG A LINE EXTENDING FROM 7 MILES SOUTH OF MILFORD TO
15 MILES SOUTHEAST OF MOUNT POCONO TO 8 MILES WEST OF EASTON...MOVING
NORTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  STOCKERTOWN...PALMER HEIGHTS...WILSON AND FLATBROOKVILLE BY 430 PM
  EDT...
  TATAMY...PORTLAND...FORKS AND EASTON BY 435 PM EDT...
  PHILLIPSBURG AND COLUMBIA BY 440 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4126 7447 4070 7507 4065 7536 4074 7549
      4085 7545 4114 7508 4109 7502 4118 7489
      4124 7486 4131 7458
TIME...MOT...LOC 2021Z 242DEG 20KT 4123 7477 4104 7509
          4071 7534

$$

SFJ

612 
WWUS51 KPHI 022047
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
447 PM EDT WED JUL 2 2014

PAC089-022056-
/O.CAN.KPHI.SV.W.0062.000000T0000Z-140702T2100Z/
MONROE PA-
447 PM EDT WED JUL 2 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONROE COUNTY IS
CANCELLED...

THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE COUNTY. 
THUS THE WARNING IS CANCELLED IN MONROE COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4126 7447 4071 7506 4073 7527 4083 7523
      4109 7496 4118 7489 4124 7486 4131 7458
TIME...MOT...LOC 2046Z 242DEG 20KT 4129 7461 4110 7493
          4078 7518

$$

NJC037-041-PAC095-022100-
/O.CON.KPHI.SV.W.0062.000000T0000Z-140702T2100Z/
WARREN NJ-SUSSEX NJ-NORTHAMPTON PA-
447 PM EDT WED JUL 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN NORTHAMPTON...SUSSEX AND WARREN COUNTIES...

AT 445 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 6 MILES NORTH OF SUSSEX TO
FLATBROOKVILLE TO HARMONY...OR ALONG A LINE EXTENDING FROM HIGH POINT
TO 10 MILES WEST OF NEWTON TO 6 MILES NORTH OF EASTON...MOVING
NORTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ROXBURG AND BLAIRSTOWN BY 455 PM EDT...
  BELVIDERE...CRANDON LAKES...FIVE POINTS AND HOPE BY 500 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4126 7447 4071 7506 4073 7527 4083 7523
      4109 7496 4118 7489 4124 7486 4131 7458
TIME...MOT...LOC 2046Z 242DEG 20KT 4129 7461 4110 7493
          4078 7518

$$

SFJ

643 
WWUS51 KPHI 022054
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
454 PM EDT WED JUL 2 2014

NJC037-041-PAC095-022104-
/O.EXP.KPHI.SV.W.0062.000000T0000Z-140702T2100Z/
WARREN NJ-SUSSEX NJ-NORTHAMPTON PA-
454 PM EDT WED JUL 2 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORTHAMPTON...
SUSSEX AND WARREN COUNTIES WILL EXPIRE AT 500 PM EDT...

THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED. THUS...THE 
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 5 PM EDT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4126 7447 4071 7506 4073 7527 4083 7523
      4109 7496 4118 7489 4124 7486 4131 7458
TIME...MOT...LOC 2054Z 242DEG 20KT 4131 7456 4112 7488
          4080 7513

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 1:10 PM EDT	Special Weather Statement	PHI	Monroe	65 min
Jul 2, 1:34 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	56 min
Jul 2, 1:47 PM EDT	Severe Thunderstorm Warning	PHI	Berks	58 min
Jul 2, 2:45 PM EDT	Special Weather Statement	PHI	Berks	30 min
Jul 2, 2:49 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Jul 2, 3:00 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 3:24 PM EDT	Special Weather Statement	PHI	Bucks	66 min
Jul 2, 3:25 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	65 min
Jul 2, 3:36 PM EDT	Flash Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	46 hr
Jul 2, 3:58 PM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	4 hr
Jul 2, 4:56 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 5:01 PM EDT	Severe Thunderstorm Warning	PHI	Berks	59 min
Jul 2, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	67 min
Jul 2, 5:31 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 5:42 PM EDT	Areal Flood Advisory	PHI	Bucks	3 hr
Jul 2, 5:56 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	49 min
Jul 2, 6:13 PM EDT	Flash Flood Warning	PHI	Bucks	4 hr
Jul 2, 6:44 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 6:51 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery	4 hr
Jul 2, 7:00 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery	60 min
Jul 2, 7:09 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Jul 2, 7:26 PM EDT	Special Weather Statement	PHI	Philadelphia	64 min
Jul 2, 7:32 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery, Philadelphia	58 min
Jul 2, 7:35 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	55 min
Jul 2, 7:48 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	27 min
Jul 2, 7:52 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Jul 2, 3:59 AM EDT	Small Craft Advisory	PHI		18 hr
Jul 2, 2:48 PM EDT	Special Weather Statement	PHI	Sussex	42 min
Jul 2, 3:30 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	60 min
Jul 2, 4:34 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 2, 5:01 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	3 hr
Jul 2, 5:08 PM EDT	Special Weather Statement	PHI	Hunterdon	52 min
Jul 2, 6:06 PM EDT	Special Weather Statement	PHI	Somerset	24 min
Jul 2, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	42 min
Jul 2, 7:15 PM EDT	Flash Flood Warning	PHI	Hunterdon, Middlesex, Somerset	4 hr
Jul 2, 7:16 PM EDT	Special Weather Statement	PHI	Middlesex, Somerset	59 min
Jul 2, 7:58 PM EDT	Special Marine Warning	PHI		62 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2014 Severe Thunderstorm Warnings in New Jersey, 2014 Every severe thunderstorm warning in 2014

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.