Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 147, NWS Philadelphia/Mount Holly

July 7, 2011Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 7, 2011, 3:15 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 45 min. 1 report 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 7, 2011, 3:15 PM EDT (19:15 UTC)
Expired: Jul 7, 2011, 4:00 PM EDT
In force: 45 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), 51 km from the middle of the area, began a volume at 19:18 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 7, 3:25 PM EDT	MARINE TSTM WIND 47	Tuckerton, NJ

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.3 hours before the alert went out and 150 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: 549 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1227 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 30 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.

292 
WUUS51 KPHI 071915
SVRPHI
NJC001-005-029-072000-
/O.NEW.KPHI.SV.W.0147.110707T1915Z-110707T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
315 PM EDT THU JUL 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  EXTREME SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 400 PM EDT

* AT 314 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR TUCKERTON...OR 13 MILES
  NORTH OF ATLANTIC CITY...AND MOVING SOUTH AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRIGANTINE AROUND 400 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.

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

&&

LAT...LON 3950 7433 3953 7434 3953 7440 3949 7438
      3949 7432 3945 7429 3941 7434 3938 7444
      3939 7446 3939 7447 3957 7448 3962 7431
      3952 7429 3956 7428 3952 7425
TIME...MOT...LOC 1915Z 345DEG 8KT 3955 7440

$$

TFG

1 follow-up statement

251 
WWUS51 KPHI 071933
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
333 PM EDT THU JUL 7 2011

NJC005-071942-
/O.CAN.KPHI.SV.W.0147.000000T0000Z-110707T2000Z/
BURLINGTON NJ-
333 PM EDT THU JUL 7 2011

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

THE SEVERE THUNDERSTORM HAS MOVED SOUTH OF BURLINGTON COUNTY.

LAT...LON 3950 7433 3953 7434 3953 7440 3949 7438
      3949 7432 3945 7429 3941 7434 3938 7444
      3939 7446 3939 7447 3953 7446 3958 7431
      3952 7429 3956 7428 3952 7425
TIME...MOT...LOC 1932Z 345DEG 8KT 3951 7439

$$

NJC001-029-072000-
/O.CON.KPHI.SV.W.0147.000000T0000Z-110707T2000Z/
OCEAN NJ-ATLANTIC NJ-
333 PM EDT THU JUL 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR EAST CENTRAL ATLANTIC AND EXTREME SOUTH CENTRAL OCEAN COUNTIES...

AT 331 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES NORTH OF
BRIGANTINE...OR 11 MILES NORTH OF ATLANTIC CITY...MOVING SOUTH AT 10
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRIGANTINE BY 400 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 LEAVE THE BEACHES QUICKLY AT THE FIRST SIGN OF THREATENING 
WEATHER. 

&&

LAT...LON 3950 7433 3953 7434 3953 7440 3949 7438
      3949 7432 3945 7429 3941 7434 3938 7444
      3939 7446 3939 7447 3953 7446 3958 7431
      3952 7429 3956 7428 3952 7425
TIME...MOT...LOC 1932Z 345DEG 8KT 3951 7439

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 1:27 PM EDT	Special Weather Statement	PHI	Burlington	93 min
Jul 7, 3:11 PM EDT	Special Weather Statement	PHI	Atlantic	64 min
Jul 7, 3:16 PM EDT	Special Marine Warning	PHI		89 min
Jul 7, 3:26 PM EDT	Severe Thunderstorm Warning	PHI	Warren	64 min
Jul 7, 3:45 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex	90 min
Jul 7, 3:46 PM EDT	Special Weather Statement	PHI	Burlington	89 min
Jul 7, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	34 min
Jul 7, 4:17 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	88 min
Jul 7, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	46 min
Jul 7, 4:48 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	57 min
Jul 7, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	63 min
Jul 7, 5:44 PM EDT	Special Weather Statement	PHI	Burlington, Monmouth, Ocean	61 min
Jul 7, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	40 min
Jul 7, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Somerset	74 min
Jul 7, 6:48 PM EDT	Special Weather Statement	PHI	Camden	57 min
Jul 7, 7:32 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Cape May, Cumberland, Salem	88 min
Jul 7, 7:49 PM EDT	Special Weather Statement	PHI	Mercer	86 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.