Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 87, NWS Philadelphia/Mount Holly

July 3, 2014Hunterdon County, Sussex County, Warren County, New Jersey; Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2014, 6:47 PM EDT for Hunterdon County, Sussex County, Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 58 min. 2 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 3, 2014, 6:47 PM EDT (22:47 UTC)
Expired: Jul 3, 2014, 7:45 PM EDT
In force: 58 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Sussex County, NJ, Warren County, NJ, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 22:47 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 3, 7:05 PM EDT	TSTM WND DMG	Washington Twp, PA	TREES REPORTED DOWN ACROSS THE COUNTY.
Jul 3, 7:15 PM EDT	HAIL 0.88	Hackettstown, NJ

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 3, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.8 hours before the alert went out and 172 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: 708 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

662 
WUUS51 KPHI 032247
SVRPHI
NJC019-037-041-PAC095-032345-
/O.NEW.KPHI.SV.W.0087.140703T2247Z-140703T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
647 PM EDT THU JUL 3 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  NORTHWESTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHWESTERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 745 PM EDT

* AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR HARMONY...MOVING NORTH AT
  20 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRASS CASTLE AND PLEASANT VALLEY AROUND 655 PM EDT...
  OXFORD AND BELVIDERE AROUND 705 PM EDT...
  GREAT MEADOWS-VIENNA AND COLUMBIA AROUND 725 PM EDT...
  HOPE AROUND 730 PM EDT...
  ALLAMUCHY-PANTHER VALLEY AROUND 735 PM EDT...
  BLAIRSTOWN AROUND 740 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 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4101 7469 4091 7477 4088 7481 4086 7480
      4081 7484 4079 7489 4077 7487 4072 7491
      4064 7508 4069 7520 4083 7516 4103 7505
      4109 7497 4110 7500
TIME...MOT...LOC 2247Z 201DEG 17KT 4073 7507

$$

FORECASTER: HEAVENER/VIVOLA

2 follow-up statements

518 
WWUS51 KPHI 032310
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
710 PM EDT THU JUL 3 2014

NJC019-032320-
/O.CAN.KPHI.SV.W.0087.000000T0000Z-140703T2345Z/
HUNTERDON NJ-
710 PM EDT THU JUL 3 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HUNTERDON COUNTY
IS CANCELLED...

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

LAT...LON 4101 7469 4091 7477 4088 7481 4086 7480
      4085 7482 4084 7482 4081 7484 4079 7489
      4079 7501 4083 7516 4103 7505 4109 7497
TIME...MOT...LOC 2310Z 201DEG 17KT 4083 7502

$$

NJC037-041-PAC095-032345-
/O.CON.KPHI.SV.W.0087.000000T0000Z-140703T2345Z/
WARREN NJ-SUSSEX NJ-NORTHAMPTON PA-
710 PM EDT THU JUL 3 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHEASTERN NORTHAMPTON...SOUTHWESTERN SUSSEX AND NORTHERN
WARREN COUNTIES...

AT 708 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 OXFORD...OR 14 MILES NORTHEAST OF EASTON...MOVING NORTH
AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES WEST OF BEATTYESTOWN BY 715 PM EDT...
  GREAT MEADOWS-VIENNA...6 MILES EAST OF COLUMBIA AND 9 MILES WEST OF
  HACKETTSTOWN BY 725 PM EDT...
  HOPE BY 730 PM EDT...
  7 MILES WEST OF ALLAMUCHY-PANTHER VALLEY BY 735 PM EDT...
  BLAIRSTOWN BY 740 PM EDT...
  6 MILES SOUTH OF MILLBROOK AND 6 MILES WEST OF GREENDELL BY 745 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 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4101 7469 4091 7477 4088 7481 4086 7480
      4085 7482 4084 7482 4081 7484 4079 7489
      4079 7501 4083 7516 4103 7505 4109 7497
TIME...MOT...LOC 2310Z 201DEG 17KT 4083 7502

$$

HEAVENER/VIVOLA

903 
WWUS51 KPHI 032338
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
738 PM EDT THU JUL 3 2014

NJC037-041-PAC095-032348-
/O.EXP.KPHI.SV.W.0087.000000T0000Z-140703T2345Z/
WARREN NJ-SUSSEX NJ-NORTHAMPTON PA-
738 PM EDT THU JUL 3 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORTHAMPTON...
SOUTHWESTERN SUSSEX AND NORTHERN WARREN COUNTIES WILL EXPIRE AT 745 
PM EDT...

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

LAT...LON 4101 7469 4091 7477 4088 7481 4086 7480
      4085 7482 4084 7482 4081 7484 4079 7489
      4079 7501 4083 7516 4103 7505 4109 7497
TIME...MOT...LOC 2338Z 201DEG 17KT 4095 7496

$$

HEAVENER/VIVOLA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 8:07 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	4 hr
Jul 2, 8:08 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	52 min
Jul 2, 8:19 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth	56 min
Jul 2, 8:25 PM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Somerset	4 hr
Jul 2, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	57 min
Jul 2, 8:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean, Salem	67 min
Jul 2, 8:59 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Monmouth, Ocean	4 hr
Jul 2, 9:54 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	44 min
Jul 2, 10:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 2, 10:30 PM EDT	Special Weather Statement	PHI	Atlantic	60 min
Jul 2, 10:38 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	112 min
Jul 2, 10:58 PM EDT	Special Weather Statement	PHI	Burlington	62 min
Jul 2, 11:17 PM EDT	Flash Flood Warning	PHI	Burlington	3 hr
Jul 3, 12:19 AM EDT	Special Marine Warning	PHI		116 min
Jul 3, 12:23 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 12:26 AM EDT	Special Marine Warning	PHI		64 min
Jul 3, 12:41 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland	50 min
Jul 3, 1:00 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	45 min
Jul 3, 1:14 AM EDT	Special Marine Warning	PHI		61 min
Jul 3, 1:19 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	56 min
Jul 3, 1:52 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 3, 1:56 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	53 min
Jul 3, 2:08 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 2:34 AM EDT	Special Weather Statement	PHI	Monmouth	56 min
Jul 3, 5:46 AM EDT	Small Craft Advisory	PHI		54 hr
Jul 3, 1:22 PM EDT	Special Weather Statement	PHI	Warren	38 min
Jul 3, 1:57 PM EDT	Tornado Warning	PHI	Warren	24 min
Jul 3, 2:23 PM EDT	Special Weather Statement	PHI	Sussex	52 min
Jul 3, 3:27 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	41 hr
Jul 3, 4:26 PM EDT	Special Weather Statement	PHI	Warren	49 min
Jul 3, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	60 min
Jul 3, 5:21 PM EDT	Special Weather Statement	PHI	Sussex	54 min
Jul 3, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	55 min
Jul 3, 6:17 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Jul 3, 6:38 PM EDT	Special Weather Statement	PHI	Warren	67 min
Jul 3, 6:42 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 3, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	44 min
Jul 3, 7:02 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Jul 3, 7:05 PM EDT	Special Weather Statement	PHI	Hunterdon	55 min
Jul 3, 7:14 PM EDT	Special Weather Statement	PHI	Sussex	61 min
Jul 3, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Morris, Somerset	55 min
Jul 3, 7:25 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset, Warren	65 min
Jul 3, 7:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	61 min
Jul 3, 7:44 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Morris, Somerset	4 hr
Jul 2, 10:08 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	67 min
Jul 3, 3:15 PM EDT	Special Weather Statement	PHI	Lebanon	45 min
Jul 3, 4:08 PM EDT	Special Weather Statement	PHI	Carbon	52 min
Jul 3, 5:06 PM EDT	Special Weather Statement	PHI	Monroe	24 min
Jul 3, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Chester	69 min
Jul 3, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	35 min
Jul 3, 5:58 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	62 min
Jul 3, 6:02 PM EDT	Tornado Warning	PHI	Carbon, Monroe	28 min
Jul 3, 6:19 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	56 min
Jul 3, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	39 min
Jul 3, 6:54 PM EDT	Special Weather Statement	PHI	Montgomery	66 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Severe Thunderstorm Warnings in Pennsylvania, 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.