Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 122, NWS Philadelphia/Mount Holly

July 24, 20125 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2012, 6:01 PM EDT for 5 counties in New Jersey. It was in force for 45 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 24, 2012, 6:01 PM EDT (22:01 UTC)
Expired
Jul 24, 2012, 6:46 PM EDT
In force
45 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 22:01 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 nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.0 hours before the alert went out and 104 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1097 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2012-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 square meters per square second.19395878Sfc1 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
1097 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
264 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.

982 
WUUS51 KPHI 242201
SVRPHI
NJC001-009-011-015-033-242315-
/O.NEW.KPHI.SV.W.0122.120724T2201Z-120724T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
601 PM EDT TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 715 PM EDT

* AT 557 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  FRANKLINVILLE...OR 11 MILES NORTHWEST OF VINELAND...AND MOVING
  SOUTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MALAGA AND 6 MILES SOUTHWEST OF VICTORY LAKES AROUND 610 PM EDT...
  NEWFIELD AROUND 625 PM EDT...
  BUENA AROUND 640 PM EDT...
  VINELAND AND SOUTH VINELAND AROUND 645 PM EDT...
  MIZPAH AROUND 705 PM EDT...
  DOROTHY AND CUMBERLAND AROUND 715 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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

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 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3914 7477 3967 7533 3976 7514 3964 7490
      3961 7488 3962 7486 3942 7444
TIME...MOT...LOC 2201Z 322DEG 11KT 3960 7507

$$

NIERENBERG
2 follow-up statements
351 
WWUS51 KPHI 242239
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
639 PM EDT TUE JUL 24 2012

NJC015-033-242248-
/O.CAN.KPHI.SV.W.0122.000000T0000Z-120724T2315Z/
GLOUCESTER NJ-SALEM NJ-
639 PM EDT TUE JUL 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SALEM AND
SOUTHERN GLOUCESTER 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 3914 7477 3951 7503 3953 7500 3951 7499
      3959 7490 3957 7485 3942 7444
TIME...MOT...LOC 2238Z 322DEG 11KT 3953 7495

$$

NJC001-009-011-242315-
/O.CON.KPHI.SV.W.0122.000000T0000Z-120724T2315Z/
CAPE MAY NJ-ATLANTIC NJ-CUMBERLAND NJ-
639 PM EDT TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHEASTERN CUMBERLAND...SOUTHERN ATLANTIC AND NORTHEASTERN CAPE
MAY COUNTIES...

AT 635 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR BUENA...OR NEAR VINELAND...MOVING SOUTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MIZPAH AND 7 MILES SOUTHWEST OF WEYMOUTH BY 705 PM EDT...
  DOROTHY...6 MILES NORTHWEST OF ESTELL MANOR AND 7 MILES WEST OF
  MAYS LANDING BY 715 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 800 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3914 7477 3951 7503 3953 7500 3951 7499
      3959 7490 3957 7485 3942 7444
TIME...MOT...LOC 2238Z 322DEG 11KT 3953 7495

$$

NIERENBERG
148 
WWUS51 KPHI 242246
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
646 PM EDT TUE JUL 24 2012

NJC001-009-011-242256-
/O.CAN.KPHI.SV.W.0122.000000T0000Z-120724T2315Z/
CAPE MAY NJ-ATLANTIC NJ-CUMBERLAND NJ-
646 PM EDT TUE JUL 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CUMBERLAND...
SOUTHERN ATLANTIC AND NORTHEASTERN CAPE MAY COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM HAS WEAKENED AS IS NO LONGER SEVERE.

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 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 3914 7477 3951 7503 3953 7500 3951 7499
      3959 7490 3957 7485 3942 7444
TIME...MOT...LOC 2246Z 322DEG 11KT 3951 7493

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:56 PM EDTSpecial Weather StatementPHIMorris94 min
Jul 24, 3:23 AM EDTSmall Craft AdvisoryPHI37 hr
Jul 24, 2:20 PM EDTSpecial Marine WarningPHI85 min
Jul 24, 2:30 PM EDTSpecial Weather StatementPHIGloucester, Salem90 min
Jul 24, 3:17 PM EDTSpecial Weather StatementPHIAtlantic, Cumberland88 min
Jul 24, 3:40 PM EDTSevere Thunderstorm WarningPHICape May, Cumberland65 min
Jul 24, 3:43 PM EDTSpecial Marine WarningPHI92 min
Jul 24, 5:16 PM EDTSpecial Weather StatementPHICumberland, Salem59 min
Jul 24, 5:27 PM EDTSpecial Weather StatementPHIAtlantic, Gloucester93 min
Jul 24, 5:31 PM EDTSevere Thunderstorm WarningPHICumberland, Salem59 min
Jul 24, 7:45 PM EDTSpecial Weather StatementPHIMonmouth30 min
Jul 24, 7:46 PM EDTSpecial Marine WarningPHI59 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.