Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 57, NWS Philadelphia/Mount Holly

June 29, 20128 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2012, 5:31 AM EDT for 8 counties in New Jersey. It was in force for 59 min. 7 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
Jun 29, 2012, 5:31 AM EDT (09:31 UTC)
Expired
Jun 29, 2012, 6:30 AM EDT
In force
59 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 09:32 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

TimeReportWhereRemark
Jun 29, 5:35 AM EDTTSTM WND DMGFranklin Twp, NJSEVERAL LARGE TREE LIMBS DOWN IN FRANKLIN TOWNSHIP.
Jun 29, 5:55 AM EDTTSTM WND DMGNew Gretna, NJTREES DOWN
Jun 29, 6:10 AM EDTTSTM WND GST 62Tuckerton, NJ
Jun 29, 6:10 AM EDTHAIL 0.75Cape May, NJ
Jun 29, 6:15 AM EDTTSTM WND DMGTuckerton, NJLARGE LIMBS DOWN IN TUCKERTON
Jun 29, 6:20 AM EDTHAIL 0.75Cape May, NJ
Jun 29, 6:20 AM EDTMARINE TSTM WIND 44Cape May, NJ38 KNOT GUST AT CAPE MAY.

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.

IssuedProductOfficeLasted
Jun 29, 4:34 AM EDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 9.5 hours before the alert went out and 155 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2012-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2012-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1927 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
276 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.

802 
WUUS51 KPHI 290931
SVRPHI
NJC001-005-007-009-011-015-029-033-291030-
/O.NEW.KPHI.SV.W.0057.120629T0931Z-120629T1030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
531 AM EDT FRI JUN 29 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF ATLANTIC CITY...
  SOUTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAPE MAY...
  CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
  SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 630 AM EDT

* AT 530 AM 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 ATCO TO GREENWICH...OR ALONG A
  LINE EXTENDING FROM 16 MILES SOUTHEAST OF CAMDEN TO 15 MILES WEST
  OF MILLVILLE...AND MOVING SOUTHEAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  ATSION...SHAMONG...SOUTH VINELAND AND NEWPORT AROUND 540 AM EDT...
  FORTESQUE...MILLVILLE AND HAMMONTON AROUND 545 AM EDT...
  WHARTON STATE FOREST...WEYMOUTH AND PORT ELIZABETH AROUND 550 AM
  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 800 AM EDT FRIDAY
MORNING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3941 7434 3935 7441 3925 7460 3899 7478
      3892 7491 3892 7495 3894 7498 3911 7490
      3916 7490 3919 7503 3921 7504 3918 7515
      3929 7526 3928 7529 3934 7534 3933 7537
      3938 7543 3990 7478 3971 7412
TIME...MOT...LOC 0931Z 294DEG 41KT 3976 7488 3935 7532

$$
 
TFG
1 follow-up statement
112 
WWUS51 KPHI 291016
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
616 AM EDT FRI JUN 29 2012

NJC007-015-033-291026-
/O.CAN.KPHI.SV.W.0057.000000T0000Z-120629T1030Z/
CAMDEN NJ-GLOUCESTER NJ-SALEM NJ-
616 AM EDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SALEM...
SOUTHEASTERN GLOUCESTER AND SOUTHEASTERN CAMDEN COUNTIES IS
CANCELLED...

THE LINE OF STORMS IS EAST 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 800 AM EDT FRIDAY
MORNING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3927 7499 3922 7504 3930 7500 3937 7490
      3945 7477 3949 7475 3976 7450 3971 7412
      3941 7434 3935 7441 3925 7460 3899 7478
      3892 7491 3892 7495 3894 7498 3911 7490
      3916 7490 3919 7503 3921 7504
TIME...MOT...LOC 1016Z 294DEG 41KT 3973 7422 3940 7469
          3897 7505

$$

NJC001-005-009-011-029-291030-
/O.CON.KPHI.SV.W.0057.000000T0000Z-120629T1030Z/
BURLINGTON NJ-CAPE MAY NJ-ATLANTIC NJ-OCEAN NJ-CUMBERLAND NJ-
616 AM EDT FRI JUN 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM EDT
FOR SOUTHEASTERN CUMBERLAND...SOUTHERN OCEAN...ATLANTIC...CAPE MAY
AND SOUTHEASTERN BURLINGTON COUNTIES...

AT 613 AM 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 MANAHAWKIN TO MAYS LANDING
TO 7 MILES WEST OF NORTH CAPE MAY...OR ALONG A LINE EXTENDING FROM 15
MILES SOUTH OF TOMS RIVER TO 14 MILES EAST OF VINELAND TO 11 MILES
WEST OF CAPE MAY...MOVING SOUTHEAST AT 45 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  STRATHMERE...SEAVILLE...SCOTCH BONNET AND MARMORA BY 625 AM EDT...
  BRIGANTINE...ATLANTIC CITY...VENTNOR CITY AND MARGATE CITY BY 630
  AM 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 800 AM EDT FRIDAY
MORNING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3927 7499 3922 7504 3930 7500 3937 7490
      3945 7477 3949 7475 3976 7450 3971 7412
      3941 7434 3935 7441 3925 7460 3899 7478
      3892 7491 3892 7495 3894 7498 3911 7490
      3916 7490 3919 7503 3921 7504
TIME...MOT...LOC 1016Z 294DEG 41KT 3973 7422 3940 7469
          3897 7505

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 3:51 AM EDTSpecial Weather StatementPHICamden, Gloucester, Hunterdon54 min
Jun 29, 5:00 AM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Monmouth and 2 more75 min
Jun 29, 5:42 AM EDTSpecial Marine WarningPHI93 min
Jun 29, 6:04 AM EDTSevere Thunderstorm WarningPHIBurlington, Ocean41 min
Jun 29, 6:09 AM EDTSpecial Marine WarningPHI96 min
Jun 29, 6:58 AM EDTSpecial Marine WarningPHI46 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012Every 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.