Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 232, NWS Philadelphia/Mount Holly

August 1, 2011Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2011, 7:12 PM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 59 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: Aug 1, 2011, 7:12 PM EDT (23:12 UTC)
Expired: Aug 1, 2011, 8:11 PM EDT
In force: 59 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 Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 129 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: 307 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1512 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -192 m²/s²
0-3 km storm-relative helicity: -166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

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

119 
WUUS51 KPHI 012312
SVRPHI
NJC001-009-011-020030-
/O.NEW.KPHI.SV.W.0232.110801T2312Z-110802T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
712 PM EDT MON AUG 1 2011

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...
  NORTHERN CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 830 PM EDT

* AT 707 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 6 MILES
  WEST OF MIZPAH...OR NEAR VINELAND...AND MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MIZPAH AROUND 720 PM EDT...
  DOROTHY AROUND 730 PM EDT...
  ESTELL MANOR AROUND 740 PM EDT...
  CORBIN CITY AND ENGLISH CREEK AROUND 750 PM EDT...
  BEESLEYS POINT AND SOMERS POINT AROUND 800 PM EDT...
  MARMORA...BEESLEYS POINT AND OCEAN CITY AROUND 805 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 3935 7441 3930 7455 3928 7455 3920 7464
      3910 7470 3914 7487 3920 7502 3934 7486
      3960 7486 3971 7471 3969 7468 3962 7466
      3954 7447 3955 7440 3949 7438 3947 7429
      3945 7429
TIME...MOT...LOC 2312Z 313DEG 21KT 3947 7493

$$

TFG

1 follow-up statement

114 
WWUS51 KPHI 020011
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
811 PM EDT MON AUG 1 2011

NJC001-009-011-020020-
/O.CAN.KPHI.SV.W.0232.000000T0000Z-110802T0030Z/
CUMBERLAND NJ-CAPE MAY NJ-ATLANTIC NJ-
811 PM EDT MON AUG 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR ATLANTIC...NORTHERN CAPE MAY
AND SOUTHEASTERN CUMBERLAND COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM HAS MOVED OFFSHORE. SPECIAL MARINE WARNINGS 
REMAIN IN EFFECT FOR THE ATLANTIC COASTAL WATERS.

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 3935 7441 3930 7455 3928 7455 3920 7464
      3910 7470 3914 7487 3920 7502 3934 7486
      3960 7486 3971 7471 3969 7468 3962 7466
      3954 7447 3955 7440 3949 7438 3947 7429
      3945 7429
TIME...MOT...LOC 0010Z 313DEG 21KT 3924 7461

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 10:13 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	62 min
Jul 31, 10:58 PM EDT	Special Weather Statement	PHI	Morris	62 min
Aug 1, 1:49 AM EDT	Special Marine Warning	PHI		56 min
Aug 1, 1:50 AM EDT	Special Weather Statement	PHI	Monmouth	55 min
Aug 1, 1:35 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	3 hr
Aug 1, 2:11 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	94 min
Aug 1, 2:44 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	29 min
Aug 1, 4:09 PM EDT	Special Weather Statement	PHI	Camden	66 min
Aug 1, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	69 min
Aug 1, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	70 min
Aug 1, 6:03 PM EDT	Special Marine Warning	PHI		57 min
Aug 1, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	59 min
Aug 1, 6:17 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester	3 hr
Aug 1, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Aug 1, 6:47 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	73 min
Aug 1, 7:01 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cumberland, Gloucester, Salem	119 min
Aug 1, 7:07 PM EDT	Special Marine Warning	PHI		83 min
Aug 1, 7:17 PM EDT	Special Marine Warning	PHI		118 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011 Every severe thunderstorm warning in 2011

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.