Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 138, NWS Philadelphia/Mount Holly

July 28, 2012Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2012, 6:34 PM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 56 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 28, 2012, 6:34 PM EDT (22:34 UTC)
Expired: Jul 28, 2012, 7:30 PM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 22:37 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 28, 6:37 PM EDT	HAIL 0.5	Vineland, NJ
Jul 28, 6:55 PM EDT	TSTM WND DMG	Vineland, NJ	WIRES DOWN IN VINELAND.

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 28, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.6 hours before the alert went out and 164 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: 899 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 840 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

015 
WUUS51 KPHI 282234
SVRPHI
NJC001-009-011-282330-
/O.NEW.KPHI.SV.W.0138.120728T2234Z-120728T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
634 PM EDT SAT JUL 28 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  NORTH CENTRAL CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...

* UNTIL 730 PM EDT

* AT 631 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 SOUTH VINELAND TO MILLVILLE TO
  FAIRTON...OR ALONG A LINE EXTENDING FROM VINELAND TO MILLVILLE TO 9
  MILES WEST OF MILLVILLE...AND MOVING SOUTHEAST AT 10 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SOUTH VINELAND AND MILLVILLE AROUND 645 PM EDT...
  VINELAND AND CEDARVILLE AROUND 650 PM EDT...
  NEWPORT AROUND 700 PM EDT...
  LAUREL LAKE AROUND 715 PM EDT...
  DIVIDING CREEK AND CUMBERLAND AROUND 725 PM EDT...
  PORT ELIZABETH AND BRICKSBORO AROUND 730 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

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

&&

LAT...LON 3947 7478 3924 7476 3921 7499 3933 7532
      3945 7520 3946 7519
TIME...MOT...LOC 2234Z 299DEG 9KT 3945 7507 3940 7510
          3937 7523

$$

HAYES

3 follow-up statements

468 
WWUS51 KPHI 282248
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
648 PM EDT SAT JUL 28 2012

NJC001-009-011-282330-
/O.CON.KPHI.SV.W.0138.000000T0000Z-120728T2330Z/
CAPE MAY NJ-ATLANTIC NJ-CUMBERLAND NJ-
648 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR EASTERN CUMBERLAND...SOUTHWESTERN ATLANTIC AND NORTHWESTERN CAPE
MAY COUNTIES...

AT 644 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 SOUTH VINELAND TO MILLVILLE
TO NEWPORT...OR ALONG A LINE EXTENDING FROM VINELAND TO MILLVILLE TO
8 MILES WEST OF MILLVILLE...MOVING EAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  NEWPORT BY 705 PM EDT...
  LAUREL LAKE BY 720 PM EDT...
  CUMBERLAND BY 725 PM EDT...
  PORT ELIZABETH...BRICKSBORO...MAURICETOWN AND PORT NORRIS BY 730 PM
  EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3929 7519 3945 7514 3946 7519 3947 7478
      3924 7476 3921 7499
TIME...MOT...LOC 2248Z 299DEG 9KT 3943 7503 3938 7506
          3935 7519

$$

HAYES

869 
WWUS51 KPHI 282317
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
717 PM EDT SAT JUL 28 2012

NJC001-009-011-282330-
/O.CON.KPHI.SV.W.0138.000000T0000Z-120728T2330Z/
CAPE MAY NJ-ATLANTIC NJ-CUMBERLAND NJ-
717 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHEASTERN CUMBERLAND...SOUTHWESTERN ATLANTIC AND NORTHWESTERN
CAPE MAY COUNTIES...

AT 716 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM DOROTHY
TO BELLEPLAIN FOREST...OR ALONG A LINE EXTENDING FROM 12 MILES EAST
OF VINELAND TO 13 MILES SOUTHEAST OF VINELAND TO 11 MILES SOUTHEAST
OF MILLVILLE...MOVING EAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BELLEPLAIN FOREST BY 725 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3924 7476 3922 7495 3947 7492 3947 7478
TIME...MOT...LOC 2317Z 275DEG 11KT 3945 7478 3934 7482
          3930 7489

$$

HAYES

776 
WWUS51 KPHI 282325
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
725 PM EDT SAT JUL 28 2012

NJC001-009-011-282335-
/O.EXP.KPHI.SV.W.0138.000000T0000Z-120728T2330Z/
CAPE MAY NJ-ATLANTIC NJ-CUMBERLAND NJ-
725 PM EDT SAT JUL 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUMBERLAND...
SOUTHWESTERN ATLANTIC AND NORTH CENTRAL CAPE MAY COUNTIES WILL EXPIRE
AT 730 PM EDT...

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

LAT...LON 3924 7476 3922 7495 3947 7492 3947 7478
TIME...MOT...LOC 2325Z 275DEG 11KT 3945 7475 3934 7479
          3930 7486

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 11:45 AM EDT	Special Weather Statement	PHI	Burlington, Camden	90 min
Jul 28, 11:47 AM EDT	Special Weather Statement	PHI	Monmouth	58 min
Jul 28, 12:21 PM EDT	Special Weather Statement	PHI	Mercer	39 min
Jul 28, 12:30 PM EDT	Special Weather Statement	PHI	Ocean	60 min
Jul 28, 12:43 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	44 min
Jul 28, 12:47 PM EDT	Special Weather Statement	PHI	Cumberland	58 min
Jul 28, 12:50 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	55 min
Jul 28, 12:55 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Somerset	48 min
Jul 28, 1:02 PM EDT	Special Marine Warning	PHI		58 min
Jul 28, 1:09 PM EDT	Special Weather Statement	PHI	Sussex	66 min
Jul 28, 1:20 PM EDT	Special Weather Statement	PHI	Ocean	55 min
Jul 28, 1:26 PM EDT	Areal Flood Advisory	PHI	Sussex	3 hr
Jul 28, 1:28 PM EDT	Special Marine Warning	PHI		62 min
Jul 28, 1:36 PM EDT	Special Weather Statement	PHI	Sussex	54 min
Jul 28, 1:41 PM EDT	Special Weather Statement	PHI	Monmouth	64 min
Jul 28, 1:52 PM EDT	Special Weather Statement	PHI	Morris	53 min
Jul 28, 2:03 PM EDT	Special Weather Statement	PHI	Sussex	57 min
Jul 28, 2:08 PM EDT	Special Weather Statement	PHI	Sussex	67 min
Jul 28, 2:13 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex	3 hr
Jul 28, 2:13 PM EDT	Special Weather Statement	PHI	Cape May	62 min
Jul 28, 2:18 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	3 hr
Jul 28, 2:26 PM EDT	Special Weather Statement	PHI	Morris	64 min
Jul 28, 2:28 PM EDT	Special Marine Warning	PHI		42 min
Jul 28, 2:37 PM EDT	Special Marine Warning	PHI		53 min
Jul 28, 2:48 PM EDT	Special Weather Statement	PHI	Burlington	57 min
Jul 28, 2:57 PM EDT	Special Weather Statement	PHI	Camden	63 min
Jul 28, 3:09 PM EDT	Special Weather Statement	PHI	Atlantic	66 min
Jul 28, 3:22 PM EDT	Special Weather Statement	PHI	Morris	53 min
Jul 28, 3:30 PM EDT	Special Weather Statement	PHI	Warren	60 min
Jul 28, 3:33 PM EDT	Areal Flood Advisory	PHI	Warren	81 min
Jul 28, 4:13 PM EDT	Special Marine Warning	PHI		62 min
Jul 28, 4:20 PM EDT	Special Weather Statement	PHI	Warren	55 min
Jul 28, 4:31 PM EDT	Special Weather Statement	PHI	Atlantic	59 min
Jul 28, 4:47 PM EDT	Flash Flood Warning	PHI	Warren	4 hr
Jul 28, 4:57 PM EDT	Special Weather Statement	PHI	Burlington	63 min
Jul 28, 5:04 PM EDT	Special Weather Statement	PHI	Somerset	56 min
Jul 28, 5:06 PM EDT	Special Weather Statement	PHI	Camden	54 min
Jul 28, 5:08 PM EDT	Special Marine Warning	PHI		67 min
Jul 28, 5:18 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	38 min
Jul 28, 5:28 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Warren	3 hr
Jul 28, 5:32 PM EDT	Areal Flood Advisory	PHI	Atlantic	3 hr
Jul 28, 5:52 PM EDT	Special Weather Statement	PHI	Cumberland	53 min
Jul 28, 5:58 PM EDT	Special Weather Statement	PHI	Somerset	62 min
Jul 28, 6:03 PM EDT	Special Weather Statement	PHI	Warren	57 min
Jul 28, 6:05 PM EDT	Special Weather Statement	PHI	Atlantic	55 min
Jul 28, 6:06 PM EDT	Special Marine Warning	PHI		54 min
Jul 28, 6:18 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	57 min
Jul 28, 6:29 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	99 min
Jul 28, 6:45 PM EDT	Special Weather Statement	PHI	Warren	60 min
Jul 28, 7:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 28, 7:24 PM EDT	Special Weather Statement	PHI	Atlantic	66 min
Jul 28, 7:32 PM EDT	Special Weather Statement	PHI	Atlantic	58 min
Jul 28, 7:40 PM EDT	Special Weather Statement	PHI	Warren	65 min
Jul 28, 7:56 PM EDT	Special Weather Statement	PHI	Hunterdon	64 min

Nearby

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.