Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 107, NWS Philadelphia/Mount Holly

July 8, 20147 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2014, 8:56 PM EDT for 7 counties in New Jersey. It was in force for 73 min. 10 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 8, 2014, 8:56 PM EDT (00:56 UTC)
Expired: Jul 8, 2014, 10:09 PM EDT
In force: 73 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, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 81 km from the middle of the area, began a volume at 00:56 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 8, 9:00 PM EDT	TSTM WND GST 48	Trenton Airport, NJ
Jul 8, 9:02 PM EDT	TSTM WND DMG	Trenton, NJ	TREES DOWN.
Jul 8, 9:15 PM EDT	TSTM WND DMG	Blairstown, NJ	SMALL TO MEDIUM TREE BRANCHES REPORTED DOWN IN BLAIRSTOWN.
Jul 8, 9:20 PM EDT	TSTM WND DMG	North Brunswick Twp, NJ	LARGE TREE DOWN ONTO A PARKED CAR CAUSING SIGNIFICANT DAMAGE. NO INJURIES.
Jul 8, 9:20 PM EDT	TSTM WND GST 50	East Brunswick, NJ
Jul 8, 9:20 PM EDT	TSTM WND GST 55	East Brunswick, NJ
Jul 8, 9:20 PM EDT	TSTM WND GST 63	East Brunswick, NJ
Jul 8, 9:22 PM EDT	TSTM WND DMG	East Brunswick, NJ	SEVERAL TREES AND TREE LIMBS DOWN. ONE TREE HIT A CAR WITH NO INJURIES.
Jul 8, 9:35 PM EDT	TSTM WND DMG	Bound Brook, NJ	LARGE LIMBS REPORTED DOWN.
Jul 8, 9:35 PM EDT	TSTM WND DMG	Sayreville, NJ	TREES REPORTED DOWN IN SAYREVILLE AND OLD BRIDGE.

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 8, 5:05 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.9 hours before the alert went out and 159 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: 342 J/kg
Mixed-layer CIN: -179 J/kg
Mixed-layer LCL: 1109 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

586 
WUUS51 KPHI 090056
SVRPHI
NJC019-021-023-027-035-037-041-090245-
/O.NEW.KPHI.SV.W.0107.140709T0056Z-140709T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
856 PM EDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 1045 PM EDT

* AT 851 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF SEVERE THUNDERSTORMS IN EASTERN PENNSYLVANIA JUST WEST OF  
  THE DELAWARE RIVER MOVING EAST AT AROUND 40 MPH. THIS LINE OF      
  THUNDERSTORMS HAS A HISTORY OR PRODUCING WIND GUSTS BETWEEN 55 AND 
  65 MPH RESULTING IN DOWNED TREES AND POWER OUTAGES. THIS LINE WILL 
  BE MOVING THROUGH WESTERN AND CENTRAL NEW JERSEY DURING THE LATE   
  EVENING HOURS.
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR 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 1100 PM EDT 
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

&&

LAT...LON 4121 7437 4104 7450 4097 7428 4060 7444
      4059 7420 4040 7426 4018 7461 4014 7459
      4018 7469 4015 7472 4015 7473 4039 7496
      4042 7506 4054 7507 4057 7519 4062 7520
      4075 7520 4086 7505 4099 7513 4136 7471
TIME...MOT...LOC 0052Z 271DEG 40KT 4061 7488

$$

FORECASTER: JJM

3 follow-up statements

194 
WWUS51 KPHI 090138
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
938 PM EDT TUE JUL 8 2014

NJC019-021-041-090148-
/O.CAN.KPHI.SV.W.0107.000000T0000Z-140709T0245Z/
WARREN NJ-HUNTERDON NJ-MERCER NJ-
938 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR MERCER...HUNTERDON AND WARREN
COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

LAT...LON 4122 7438 4104 7450 4097 7428 4068 7445
      4061 7444 4059 7420 4040 7426 4026 7448
      4033 7462 4039 7463 4041 7474 4051 7480
      4051 7478 4062 7470 4070 7471 4079 7489
      4091 7477 4110 7500 4136 7471
TIME...MOT...LOC 0138Z 257DEG 39KT 4109 7466

$$

NJC023-027-035-037-090245-
/O.CON.KPHI.SV.W.0107.000000T0000Z-140709T0245Z/
MORRIS NJ-SOMERSET NJ-SUSSEX NJ-MIDDLESEX NJ-
938 PM EDT TUE JUL 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR MIDDLESEX...SUSSEX...SOMERSET AND MORRIS COUNTIES...

AT 935 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR NEWTON...MOVING EAST
AT 45 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT 
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

LAT...LON 4122 7438 4104 7450 4097 7428 4068 7445
      4061 7444 4059 7420 4040 7426 4026 7448
      4033 7462 4039 7463 4041 7474 4051 7480
      4051 7478 4062 7470 4070 7471 4079 7489
      4091 7477 4110 7500 4136 7471
TIME...MOT...LOC 0138Z 257DEG 39KT 4109 7466

$$

JJM

453 
WWUS51 KPHI 090153
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
953 PM EDT TUE JUL 8 2014

NJC023-027-035-090202-
/O.CAN.KPHI.SV.W.0107.000000T0000Z-140709T0245Z/
MORRIS NJ-SOMERSET NJ-MIDDLESEX NJ-
953 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR MIDDLESEX...SOMERSET AND
MORRIS COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR SOUTHERN DELAWARE AND NEW JERSEY AND NORTHEAST
PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

LAT...LON 4123 7440 4121 7439 4115 7443 4097 7464
      4092 7465 4090 7470 4092 7473 4091 7478
      4107 7494 4109 7499 4111 7498 4116 7491
      4122 7487 4136 7471
TIME...MOT...LOC 0152Z 204DEG 47KT 4130 7456

$$

NJC037-090245-
/O.CON.KPHI.SV.W.0107.000000T0000Z-140709T0245Z/
SUSSEX NJ-
953 PM EDT TUE JUL 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR SUSSEX COUNTY...

AT 951 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF 
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED EAST OF HIGH POINT...MOVING NORTHEAST AT 35 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR SOUTHERN DELAWARE AND NEW JERSEY AND NORTHEAST
PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

LAT...LON 4123 7440 4121 7439 4115 7443 4097 7464
      4092 7465 4090 7470 4092 7473 4091 7478
      4107 7494 4109 7499 4111 7498 4116 7491
      4122 7487 4136 7471
TIME...MOT...LOC 0152Z 204DEG 47KT 4130 7456

$$

JJM

290 
WWUS51 KPHI 090209
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1009 PM EDT TUE JUL 8 2014

NJC037-090218-
/O.CAN.KPHI.SV.W.0107.000000T0000Z-140709T0245Z/
SUSSEX NJ-
1009 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX COUNTY IS CANCELLED...

SEVERE WEATHER HAS MOVED OUT OF THE AREA.

LAT...LON 4123 7440 4121 7439 4115 7443 4097 7464
      4092 7465 4090 7470 4092 7473 4091 7478
      4107 7494 4109 7499 4111 7498 4116 7491
      4122 7487 4136 7471
TIME...MOT...LOC 0208Z 204DEG 47KT 4149 7445

$$

JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:16 PM EDT	Special Marine Warning	PHI		119 min
Jul 8, 8:21 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Cumberland, Gloucester, Salem	69 min
Jul 8, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	69 min
Jul 8, 9:02 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May, Cumberland	58 min
Jul 8, 9:12 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	63 min
Jul 8, 9:22 PM EDT	Special Marine Warning	PHI		113 min
Jul 8, 9:48 PM EDT	Special Marine Warning	PHI		117 min
Jul 9, 8:52 AM EDT	Small Craft Advisory	PHI		12 hr
Jul 9, 2:48 PM EDT	Special Weather Statement	PHI	Sussex	72 min
Jul 9, 3:25 PM EDT	Special Weather Statement	PHI	Sussex	65 min
Jul 9, 3:28 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	49 min
Jul 9, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	64 min
Jul 9, 6:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris	63 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.