Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 135, NWS Philadelphia/Mount Holly

July 28, 2012Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2012, 5:18 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 38 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 28, 2012, 5:18 PM EDT (21:18 UTC)
Expired: Jul 28, 2012, 5:56 PM EDT
In force: 38 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 21:19 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 28, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.3 hours before the alert went out and 197 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.

735 
WUUS51 KPHI 282118
SVRPHI
NJC001-005-029-282215-
/O.NEW.KPHI.SV.W.0135.120728T2118Z-120728T2215Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF ATLANTIC CITY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 615 PM EDT

* AT 514 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM PORT REPUBLIC TO ABSECON TO NORTHFIELD TO ENGLISH CREEK...OR
  ALONG A LINE EXTENDING FROM 12 MILES NORTH OF ATLANTIC CITY TO
  ATLANTIC CITY TO 7 MILES WEST OF ATLANTIC CITY TO 12 MILES WEST OF
  ATLANTIC CITY...AND MOVING EAST AT 15 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NORTHFIELD AROUND 530 PM EDT...
  TUCKERTON AROUND 535 PM EDT...
  MARGATE CITY AND BRIGANTINE AROUND 545 PM EDT...
  BEACH HAVEN AND VENTNOR CITY AROUND 550 PM EDT...
  NORTH BEACH HAVEN AND ATLANTIC CITY AROUND 600 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 3955 7423 3950 7429 3945 7430 3938 7440
      3935 7441 3932 7449 3935 7480 3944 7458
      3962 7447 3962 7428 3961 7425 3959 7425
      3961 7423 3961 7420
TIME...MOT...LOC 2118Z 274DEG 13KT 3954 7441 3943 7446
          3939 7455 3937 7464

$$

HAYES

3 follow-up statements

894 
WWUS51 KPHI 282134
SVSPHI

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

NJC005-282144-
/O.CAN.KPHI.SV.W.0135.000000T0000Z-120728T2215Z/
BURLINGTON NJ-
534 PM EDT SAT JUL 28 2012

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

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF 
THE AREA. 

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 3950 7430 3945 7430 3938 7440 3935 7442
      3932 7448 3938 7466 3944 7458 3956 7448
      3956 7445 3954 7444 3957 7442 3957 7438
      3955 7424
TIME...MOT...LOC 2134Z 274DEG 13KT 3953 7433 3942 7439
          3938 7448 3937 7457

$$

NJC001-029-282215-
/O.CON.KPHI.SV.W.0135.000000T0000Z-120728T2215Z/
ATLANTIC NJ-OCEAN NJ-
534 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTH CENTRAL OCEAN AND SOUTHEASTERN ATLANTIC COUNTIES...

AT 531 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES EAST OF PORT REPUBLIC TO BRIGANTINE TO
PLEASANTVILLE TO NORTHFIELD...OR ALONG A LINE EXTENDING FROM 13 MILES
NORTH OF ATLANTIC CITY TO ATLANTIC CITY TO 7 MILES WEST OF ATLANTIC
CITY...MOVING EAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BRIGANTINE BY 545 PM EDT...
  VENTNOR CITY BY 550 PM EDT...
  ATLANTIC CITY BY 600 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 3950 7430 3945 7430 3938 7440 3935 7442
      3932 7448 3938 7466 3944 7458 3956 7448
      3956 7445 3954 7444 3957 7442 3957 7438
      3955 7424
TIME...MOT...LOC 2134Z 274DEG 13KT 3953 7433 3942 7439
          3938 7448 3937 7457

$$

HAYES

260 
WWUS51 KPHI 282146
SVSPHI

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

NJC001-029-282215-
/O.CON.KPHI.SV.W.0135.000000T0000Z-120728T2215Z/
ATLANTIC NJ-OCEAN NJ-
546 PM EDT SAT JUL 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTH CENTRAL OCEAN AND SOUTHEASTERN ATLANTIC COUNTIES...

AT 544 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF MYSTIC
ISLAND TO BRIGANTINE TO ATLANTIC CITY TO NORTHFIELD...OR ALONG A LINE
EXTENDING FROM 14 MILES NORTHEAST OF ATLANTIC CITY TO 6 MILES
NORTHEAST OF ATLANTIC CITY TO ATLANTIC CITY...MOVING EAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  VENTNOR CITY BY 555 PM EDT...
  ATLANTIC CITY BY 600 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DAMAGING WINDS UP TO 60 MPH WERE REPORTED IN EGG HARBOR TOWNSHIP
WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND 
STAY 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 3950 7430 3945 7430 3938 7440 3935 7443
      3932 7449 3934 7455 3937 7461 3957 7441
      3955 7424
TIME...MOT...LOC 2146Z 274DEG 13KT 3952 7427 3942 7433
          3938 7442 3937 7451

$$

HAYES

213 
WWUS51 KPHI 282156
SVSPHI

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

NJC001-029-282206-
/O.CAN.KPHI.SV.W.0135.000000T0000Z-120728T2215Z/
ATLANTIC NJ-OCEAN NJ-
556 PM EDT SAT JUL 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OCEAN AND
SOUTHEASTERN ATLANTIC COUNTIES IS CANCELLED...

THE LINE OF STORMS THAT PROMPTED THE WARNING HAVE MOVED OFFSHORE.

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 3950 7430 3945 7430 3938 7440 3935 7443
      3932 7449 3934 7455 3937 7461 3957 7441
      3955 7424
TIME...MOT...LOC 2156Z 274DEG 13KT 3952 7422 3942 7428
          3938 7437 3937 7446

$$

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, 5:28 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, 6:34 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	56 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.