Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 118, NWS Philadelphia/Mount Holly

June 22, 20116 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2011, 4:17 PM EDT for 6 counties in New Jersey. It was in force for 58 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: Jun 22, 2011, 4:17 PM EDT (20:17 UTC)
Expired: Jun 22, 2011, 5:15 PM EDT
In force: 58 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 20:20 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
Jun 22, 4:24 PM EDT	TSTM WND DMG	Pitman, NJ	NUMEROUS TREES DOWN IN GLOUCESTER COUNTY

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, 8.3 hours before the alert went out and 100 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: 356 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

502 
WUUS51 KPHI 222017
SVRPHI
NJC001-005-007-011-015-033-222115-
/O.NEW.KPHI.SV.W.0118.110622T2017Z-110622T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
417 PM EDT WED JUN 22 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  NORTH CENTRAL CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  EASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 515 PM EDT

* AT 416 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
  ELMER...OR 12 MILES NORTHWEST OF VINELAND...AND MOVING NORTHEAST AT
  30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FRANKLINVILLE...CLAYTON AND MALAGA AROUND 425 PM EDT...
  GLASSBORO AROUND 430 PM EDT...
  MONROE TOWNSHIP AND VICTORY LAKES AROUND 435 PM EDT...
  WILLIAMSTOWN AND SICKLERVILLE AROUND 440 PM EDT...
  CHESILHURST AND BERLIN AROUND 450 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS... DANGEROUS LOUD 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 4004 7488 3970 7449 3948 7500 3945 7534
      3967 7531
TIME...MOT...LOC 2017Z 238DEG 26KT 3960 7515

$$

MPD

1 follow-up statement

581 
WWUS51 KPHI 222049
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
449 PM EDT WED JUN 22 2011

NJC011-033-222058-
/O.CAN.KPHI.SV.W.0118.000000T0000Z-110622T2115Z/
SALEM NJ-CUMBERLAND NJ-
449 PM EDT WED JUN 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CUMBERLAND AND
EASTERN SALEM COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF 
THE AREA, THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3950 7497 3967 7516 4004 7488 3970 7449
TIME...MOT...LOC 2048Z 235DEG 38KT 3980 7486

$$

NJC001-005-007-015-222115-
/O.CON.KPHI.SV.W.0118.000000T0000Z-110622T2115Z/
CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-BURLINGTON NJ-
449 PM EDT WED JUN 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHERN BURLINGTON...NORTHWESTERN ATLANTIC...SOUTHEASTERN
GLOUCESTER AND CAMDEN COUNTIES...

AT 445 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 ATCO...OR 15 MILES SOUTHEAST OF CAMDEN...MOVING
NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MEDFORD LAKES...6 MILES NORTHWEST OF SHAMONG AND 7 MILES NORTHWEST
  OF ATSION BY 455 PM EDT...
  TABERNACLE...MEDFORD AND 8 MILES SOUTHEAST OF LUMBERTON BY 500 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.

&&

LAT...LON 3950 7497 3967 7516 4004 7488 3970 7449
TIME...MOT...LOC 2048Z 235DEG 35KT 3980 7486

$$

GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:31 AM EDT	Special Marine Warning	PHI		59 min
Jun 22, 8:39 AM EDT	Special Weather Statement	PHI	Morris, Sussex	36 min
Jun 22, 9:31 AM EDT	Special Weather Statement	PHI	Morris, Sussex	44 min
Jun 22, 3:07 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	53 min
Jun 22, 3:59 PM EDT	Special Weather Statement	PHI	Mercer	61 min
Jun 22, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	61 min
Jun 22, 4:06 PM EDT	Special Marine Warning	PHI		84 min
Jun 22, 4:09 PM EDT	Special Weather Statement	PHI	Sussex	66 min
Jun 22, 4:37 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	53 min
Jun 22, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	66 min
Jun 22, 4:53 PM EDT	Tornado Warning	PHI	Sussex, Warren	37 min
Jun 22, 5:11 PM EDT	Tornado Warning	PHI	Hunterdon, Morris, Sussex, Warren	34 min
Jun 22, 5:31 PM EDT	Tornado Warning	PHI	Monmouth, Ocean	29 min
Jun 22, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset	48 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.