Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 139, NWS Philadelphia/Mount Holly

July 15, 20145 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2014, 5:11 PM EDT for 5 counties in New Jersey. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 15, 2014, 5:11 PM EDT (21:11 UTC)
Expired: Jul 15, 2014, 6:15 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 71 km from the middle of the area, began a volume at 21:14 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.

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 15, 1:43 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.2 hours before the alert went out and 142 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: 662 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

799 
WUUS51 KPHI 152111
SVRPHI
NJC019-021-023-027-035-152215-
/O.NEW.KPHI.SV.W.0139.140715T2111Z-140715T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
511 PM EDT TUE JUL 15 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  NORTH CENTRAL MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  NORTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 615 PM EDT

* AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR HOPEWELL...MOVING NORTHEAST
  AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SKILLMAN AROUND 520 PM EDT...
  CLOVERHILL AND SOUTH BRUNSWICK AROUND 530 PM EDT...
  BELLE MEAD AND KENDALL PARK AROUND 535 PM EDT...
  FLAGTOWN AROUND 540 PM EDT...
  MILLSTONE AROUND 545 PM EDT...
  WHITE HOUSE STATION AROUND 550 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.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS SEVERE
THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4046 7448 4034 7460 4042 7488 4078 7473
      4070 7443 4068 7445 4066 7445 4067 7440
      4062 7442 4060 7444 4060 7437
TIME...MOT...LOC 2111Z 210DEG 18KT 4038 7476

$$

FORECASTER: HEAVENER

2 follow-up statements

367 
WWUS51 KPHI 152142
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
542 PM EDT TUE JUL 15 2014

NJC021-152152-
/O.CAN.KPHI.SV.W.0139.000000T0000Z-140715T2215Z/
MERCER NJ-
542 PM EDT TUE JUL 15 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MERCER 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.

LAT...LON 4047 7451 4043 7457 4050 7485 4078 7473
      4070 7443 4068 7445 4066 7445 4067 7440
      4062 7442 4060 7444 4060 7437
TIME...MOT...LOC 2142Z 210DEG 18KT 4051 7466

$$

NJC019-023-027-035-152215-
/O.CON.KPHI.SV.W.0139.000000T0000Z-140715T2215Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-MIDDLESEX NJ-
542 PM EDT TUE JUL 15 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTH CENTRAL MIDDLESEX...SOMERSET...SOUTH CENTRAL MORRIS AND
NORTHEASTERN HUNTERDON COUNTIES...

AT 541 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 FLAGTOWN...OR NEAR SOMERVILLE...MOVING NORTHEAST AT 20
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MANVILLE BY 550 PM EDT...
  SOMERVILLE...RARITAN AND BRIDGEWATER BY 555 PM EDT...
  BOUND BROOK AND SOUTH BOUND BROOK BY 600 PM EDT...
  MARTINSVILLE AND MIDDLESEX BY 605 PM EDT...
  MILLINGTON BY 615 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.

LAT...LON 4047 7451 4043 7457 4050 7485 4078 7473
      4070 7443 4068 7445 4066 7445 4067 7440
      4062 7442 4060 7444 4060 7437
TIME...MOT...LOC 2142Z 210DEG 18KT 4051 7466

$$

HEAVENER

769 
WWUS51 KPHI 152155
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 PM EDT TUE JUL 15 2014

NJC023-152205-
/O.CAN.KPHI.SV.W.0139.000000T0000Z-140715T2215Z/
MIDDLESEX NJ-
555 PM EDT TUE JUL 15 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MIDDLESEX COUNTY
IS CANCELLED...

LAT...LON 4069 7444 4068 7444 4059 7449 4058 7452
      4057 7453 4055 7452 4053 7452 4057 7481
      4078 7471 4070 7443
TIME...MOT...LOC 2155Z 210DEG 18KT 4057 7462

$$

NJC019-027-035-152215-
/O.CON.KPHI.SV.W.0139.000000T0000Z-140715T2215Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-
555 PM EDT TUE JUL 15 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHERN SOMERSET...SOUTH CENTRAL MORRIS AND EAST CENTRAL
HUNTERDON COUNTIES...

AT 553 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 SOMERVILLE...MOVING NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRIDGEWATER...BOUND BROOK AND SOUTH BOUND BROOK BY 600 PM EDT...
  MARTINSVILLE BY 605 PM EDT...
  MILLINGTON...BASKING RIDGE...FAR HILLS AND 6 MILES SOUTH OF
  BERNARDSVILLE BY 615 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.

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.

LAT...LON 4069 7444 4068 7444 4059 7449 4058 7452
      4057 7453 4055 7452 4053 7452 4057 7481
      4078 7471 4070 7443
TIME...MOT...LOC 2155Z 210DEG 18KT 4057 7462

$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 8:19 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more	4 hr
Jul 14, 8:19 PM EDT	Tornado Warning	PHI	Burlington	26 min
Jul 14, 8:36 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	54 min
Jul 14, 8:43 PM EDT	Flash Flood Warning	PHI	Burlington, Monmouth, Ocean	4 hr
Jul 14, 9:06 PM EDT	Special Marine Warning	PHI		84 min
Jul 14, 10:26 PM EDT	Special Marine Warning	PHI		49 min
Jul 15, 2:50 AM EDT	Areal Flood Warning	PHI	Ocean	5 hr
Jul 15, 3:53 AM EDT	Small Craft Advisory	PHI		24 hr
Jul 15, 1:09 PM EDT	Special Weather Statement	PHI	Somerset	66 min
Jul 15, 1:21 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth	54 min
Jul 15, 1:22 PM EDT	Areal Flood Advisory	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more	3 hr
Jul 15, 1:36 PM EDT	Special Weather Statement	PHI	Monmouth	54 min
Jul 15, 1:50 PM EDT	Flash Flood Warning	PHI	Middlesex, Monmouth, Ocean	4 hr
Jul 15, 1:52 PM EDT	Special Weather Statement	PHI	Burlington, Camden	68 min
Jul 15, 2:17 PM EDT	Special Weather Statement	PHI	Mercer	43 min
Jul 15, 2:22 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Jul 15, 2:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	51 min
Jul 15, 2:30 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	41 min
Jul 15, 2:43 PM EDT	Special Weather Statement	PHI	Monmouth	32 min
Jul 15, 2:44 PM EDT	Special Marine Warning	PHI		31 min
Jul 15, 2:46 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	3 hr
Jul 15, 3:14 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	7 hr
Jul 15, 3:23 PM EDT	Special Weather Statement	PHI	Monmouth	67 min
Jul 15, 3:42 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	63 min
Jul 15, 3:44 PM EDT	Special Marine Warning	PHI		91 min
Jul 15, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland	56 min
Jul 15, 4:26 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Middlesex, Somerset	64 min
Jul 15, 4:27 PM EDT	Flash Flood Warning	PHI	Camden, Cumberland, Gloucester, Salem	4 hr
Jul 15, 4:37 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	53 min
Jul 15, 4:53 PM EDT	Special Marine Warning	PHI		67 min
Jul 15, 5:05 PM EDT	Special Weather Statement	PHI	Burlington	55 min
Jul 15, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Monmouth, Ocean	61 min
Jul 15, 5:43 PM EDT	Special Weather Statement	PHI	Ocean	62 min
Jul 15, 5:45 PM EDT	Special Weather Statement	PHI	Atlantic	60 min
Jul 15, 5:50 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset	4 hr
Jul 15, 5:57 PM EDT	Special Marine Warning	PHI		63 min
Jul 15, 6:00 PM EDT	Special Marine Warning	PHI		60 min
Jul 15, 6:03 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	4 hr
Jul 15, 6:05 PM EDT	Special Marine Warning	PHI		115 min
Jul 15, 6:11 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more	4 hr
Jul 15, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	50 min
Jul 15, 6:12 PM EDT	Special Weather Statement	PHI	Morris	63 min
Jul 15, 6:17 PM EDT	Special Weather Statement	PHI	Cape May	58 min
Jul 15, 6:44 PM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 15, 7:20 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Mercer, Monmouth, Ocean	4 hr

Nearby

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.