Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 94, NWS Philadelphia/Mount Holly

July 15, 2012Bucks County, Pennsylvania; 5 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2012, 9:55 PM EDT for Bucks County, Pennsylvania; 5 counties in New Jersey. It was in force for 80 min. 4 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 15, 2012, 9:55 PM EDT (01:55 UTC)
Expired: Jul 15, 2012, 11:15 PM EDT
In force: 80 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 17 km from the middle of the area, began a volume at 01:56 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 15, 10:03 PM EDT	TSTM WND DMG	Medford Lakes, NJ	TREES DOWN IN MEDFORD LAKES.
Jul 15, 10:30 PM EDT	TSTM WND DMG	Toms River, NJ	LARGE BRANCHES BROKEN.
Jul 15, 10:45 PM EDT	TSTM WND GST 61	Brick Twp, NJ
Jul 15, 11:01 PM EDT	TSTM WND DMG	Long Branch, NJ	LARGE BRANCHES BROKEN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.9 hours before the alert went out and 234 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: 1876 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

202 
WUUS51 KPHI 160155
SVRPHI
NJC005-007-021-025-029-PAC017-160315-
/O.NEW.KPHI.SV.W.0094.120716T0155Z-120716T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
955 PM EDT SUN JUL 15 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MERCER COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF TRENTON...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  CENTRAL CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL 1115 PM EDT

* AT 952 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 LANGHORN TO SICKLERVILLE...OR ALONG A LINE EXTENDING FROM 10
  MILES WEST OF TRENTON TO 16 MILES SOUTH OF CAMDEN...AND MOVING EAST
  AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WOODSIDE...YARDLEY...MARLTON LAKES AND EVESHAM AROUND 1000 PM
  EDT...
  TRENTON...LUMBERTON...JACKSONVILLE AND MOUNT HOLLY AROUND 1005 PM
  EDT...
  MERCERVILLE-HAMILTON SQUARE AND JOBSTOWN AROUND 1010 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.

&&

LAT...LON 3981 7408 3971 7411 3962 7418 3968 7467
      3973 7473 3969 7479 3971 7500 3973 7502
      3976 7504 4003 7500 4009 7495 4012 7498
      4025 7496 4029 7451 4025 7445 4030 7439
      4033 7396
TIME...MOT...LOC 0155Z 266DEG 38KT 4018 7490 3971 7498

$$

AMC

4 follow-up statements

083 
WWUS51 KPHI 160217
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1017 PM EDT SUN JUL 15 2012

NJC007-PAC017-160226-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
CAMDEN NJ-BUCKS PA-
1017 PM EDT SUN JUL 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCKS AND CENTRAL
CAMDEN COUNTIES IS CANCELLED...

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.

LAT...LON 3989 7408 3981 7407 3962 7418 3968 7467
      3979 7482 4012 7478 4016 7472 4019 7476
      4023 7477 4029 7452 4025 7448 4025 7445
      4030 7438 4033 7397
TIME...MOT...LOC 0216Z 264DEG 42KT 4021 7456 3975 7468

$$

NJC005-021-025-029-160315-
/O.CON.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
MERCER NJ-BURLINGTON NJ-MONMOUTH NJ-OCEAN NJ-
1017 PM EDT SUN JUL 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR OCEAN...MONMOUTH...BURLINGTON AND SOUTHERN MERCER COUNTIES...

AT 1013 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 ALLENTOWN TO ATSION...MOVING EAST AT 50 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MANALAPAN...WOODRUFF...SIX FLAGS THEME PARK AND CLARKSBURG BY 1025
  PM EDT...
  ENGLISHTOWN...WHITING...PENN STATE FOREST AND OLD HALFWAY BY 1030
  PM EDT...
  FREEHOLD AND EAST FREEHOLD BY 1035 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.

&&

LAT...LON 3989 7408 3981 7407 3962 7418 3968 7467
      3979 7482 4012 7478 4016 7472 4019 7476
      4023 7477 4029 7452 4025 7448 4025 7445
      4030 7438 4033 7397
TIME...MOT...LOC 0216Z 264DEG 42KT 4021 7456 3975 7468

$$

AMC

999 
WWUS51 KPHI 160238
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1038 PM EDT SUN JUL 15 2012

NJC021-160245-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
MERCER NJ-
1038 PM EDT SUN JUL 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MERCER COUNTY IS
CANCELLED...

THE LINE OF THE SEVERE THUNDERSTORMS HAS MOVED EAST OF THE COUNTY.

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.

LAT...LON 3988 7408 3980 7407 3980 7408 3962 7418
      3968 7463 3984 7454 3999 7455 4006 7450
      4014 7449 4021 7446 4025 7448 4025 7445
      4030 7438 4033 7397
TIME...MOT...LOC 0235Z 264DEG 42KT 4023 7427 3976 7450

$$

NJC005-025-029-160315-
/O.CON.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
BURLINGTON NJ-MONMOUTH NJ-OCEAN NJ-
1038 PM EDT SUN JUL 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR OCEAN...SOUTHERN MONMOUTH AND EASTERN BURLINGTON COUNTIES...

AT 1030 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS OF 60 TO 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WEST FREEHOLD TO CHATSWORTH...OR
ALONG A LINE EXTENDING FROM 18 MILES SOUTH OF NEW BRUNSWICK TO 25
MILES SOUTHWEST OF TOMS RIVER...MOVING EAST AT 50 MPH.  SEASIDE
HEIGHTS, TOMS RIVER AND LAVALLETTE ARE IN THE PATH OF THE STRONGEST
WINDS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HOWELL...FREEWOOD ACRES...PINE RIDGE AT CRESTWOOD AND LEISURE KNOLL
  BY 1040 PM EDT...
  TINTON FALLS...WARREN GROVE...COLLINGWOOD PARK AND BROOKVILLE BY
  1045 PM EDT...
  OAKHURST AND WEST LONG BRANCH BY 1050 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE 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.

&&

LAT...LON 3988 7408 3980 7407 3980 7408 3962 7418
      3968 7463 3984 7454 3999 7455 4006 7450
      4014 7449 4021 7446 4025 7448 4025 7445
      4030 7438 4033 7397
TIME...MOT...LOC 0235Z 264DEG 42KT 4023 7427 3976 7450

$$

TFG

445 
WWUS51 KPHI 160250
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1050 PM EDT SUN JUL 15 2012

NJC005-160259-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
BURLINGTON NJ-
1050 PM EDT SUN JUL 15 2012

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

THE LINE OF SEVERE STORMS IS EAST OF THE COUNTY.

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.

LAT...LON 3988 7408 3980 7407 3980 7408 3962 7419
      3973 7436 3983 7442 3995 7442 4006 7440
      4029 7429 4033 7397
TIME...MOT...LOC 0249Z 265DEG 31KT 4025 7415 4010 7430
          3979 7438

$$

NJC025-029-160315-
/O.CON.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
MONMOUTH NJ-OCEAN NJ-
1050 PM EDT SUN JUL 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR OCEAN AND SOUTHEASTERN MONMOUTH COUNTIES...

AT 1048 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DESTRUCTIVE WINDS OF 60 TO 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM COLLINGWOOD PARK TO JACKSON
TO WARREN GROVE...OR ALONG A LINE EXTENDING FROM 16 MILES SOUTHWEST
OF SANDY HOOK TO 12 MILES NORTHWEST OF TOMS RIVER TO 16 MILES
SOUTHWEST OF TOMS RIVER...MOVING EAST AT 35 MPH. THE CORE OF THE
DAMAGING WIND GUSTS ARE NOW ON THE BARRIER ISLAND. 

SEVERE THUNDERSTORMS WILL BE NEAR...
  TINTON FALLS...COLLINGWOOD PARK...BROOKVILLE AND LEISURE VILLAGE
  WEST-PINE LAKE PARK BY 1055 PM EDT...
  WEST LONG BRANCH...EATONTOWN...OCEANPORT AND OCEAN ACRES BY 1100 PM
  EDT...
  ELBERON AND LONG BRANCH BY 1105 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REMAIN INDOORS UNTIL THE THUNDERSTORM PASSES AND DO NOT
DRIVE AROUND BARRICADES.

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.

&&

LAT...LON 3988 7408 3980 7407 3980 7408 3962 7419
      3973 7436 3983 7442 3995 7442 4006 7440
      4029 7429 4033 7397
TIME...MOT...LOC 0249Z 265DEG 31KT 4025 7415 4010 7430
          3979 7438

$$
 
TFG

664 
WWUS51 KPHI 160308
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1108 PM EDT SUN JUL 15 2012

NJC025-029-160317-
/O.EXP.KPHI.SV.W.0094.000000T0000Z-120716T0315Z/
MONMOUTH NJ-OCEAN NJ-
1108 PM EDT SUN JUL 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR OCEAN AND SOUTHEASTERN
MONMOUTH COUNTIES WILL EXPIRE AT 1115 PM EDT...

THE STRONGEST THUNDERSTORMS HAVE MOVED OFFSHORE...AND THE THREAT FOR 
ADDITIONAL SEVERE WEATHER WILL DIMINISH AFT 1115 PM.

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.

LAT...LON 3988 7408 3980 7407 3980 7408 3962 7419
      3973 7436 3983 7442 3995 7442 4006 7440
      4029 7429 4033 7397
TIME...MOT...LOC 0307Z 265DEG 31KT 4025 7394 4010 7410
          3980 7418

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 8:27 PM EDT	Special Weather Statement	PHI	Chester, Montgomery, Philadelphia	63 min
Jul 15, 8:30 PM EDT	Severe Thunderstorm Warning	PHI	Chester	45 min
Jul 15, 8:35 PM EDT	Special Weather Statement	PHI	Bucks	55 min
Jul 15, 8:58 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	62 min
Jul 15, 9:16 PM EDT	Special Weather Statement	PHI	Chester	59 min
Jul 15, 9:21 PM EDT	Special Weather Statement	PHI	Bucks	54 min
Jul 16, 3:35 AM EDT	Heat Advisory	PHI	Berks, Lehigh, Northampton	62 hr
Jul 15, 8:04 PM EDT	Special Weather Statement	PHI	Atlantic	56 min
Jul 15, 8:11 PM EDT	Special Weather Statement	PHI	Gloucester, Salem	64 min
Jul 15, 8:39 PM EDT	Special Marine Warning	PHI		66 min
Jul 15, 9:00 PM EDT	Special Weather Statement	PHI	Burlington	60 min
Jul 15, 9:33 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth	57 min
Jul 15, 9:45 PM EDT	Special Marine Warning	PHI		60 min
Jul 15, 9:52 PM EDT	Special Weather Statement	PHI	Ocean	68 min
Jul 15, 10:14 PM EDT	Special Marine Warning	PHI		79 min
Jul 15, 10:51 PM EDT	Special Weather Statement	PHI	Atlantic, Camden, Gloucester, Salem	54 min
Jul 15, 11:25 PM EDT	Special Weather Statement	PHI	Atlantic, Ocean	65 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012 Severe Thunderstorm Warnings in Pennsylvania, 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.