Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 45, NWS Philadelphia/Mount Holly

June 22, 2012Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2012, 7:04 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 56 min. 5 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 22, 2012, 7:04 PM EDT (23:04 UTC)
Expired: Jun 22, 2012, 8:00 PM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 23:04 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, 7:10 PM EDT	TSTM WND DMG	Palmyra, NJ	TREES DOWN ON WEST BROAD AND WASHINGTON AVENUE
Jun 22, 7:20 PM EDT	TSTM WND DMG	Moorestown, NJ	TREES DOWN ON MAIN STREET.
Jun 22, 7:25 PM EDT	TSTM WND DMG	Moorestown, NJ	NUMEROUS VERY LARGE TREE LIMBS DOWN ON EAST MAIN STREET.
Jun 22, 7:30 PM EDT	TSTM WND DMG	Moorestown, NJ	TREES DOWN ON MAIN STREET
Jun 22, 7:39 PM EDT	HAIL 0.75	Willingboro, NJ	HEAVY RAIN ALSO

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.

Issued	Product	Office	Lasted
Jun 22, 1:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.1 hours before the alert went out and 102 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: 1129 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1361 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

988 
WUUS51 KPHI 222304
SVRPHI
NJC005-007-015-PAC045-101-230000-
/O.NEW.KPHI.SV.W.0045.120622T2304Z-120623T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
704 PM EDT FRI JUN 22 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
  SOUTHERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF PHILADELPHIA...
  WESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  NORTHERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAMDEN...
  NORTH CENTRAL GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 800 PM EDT

* AT 700 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
  SOUTH PHILADELPHIA...OR NEAR CAMDEN...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CAMDEN...GLOUCESTER CITY AND WESTVILLE AROUND 710 PM EDT...
  BELLMAWR AROUND 715 PM EDT...
  PALMYRA AND MAGNOLIA AROUND 725 PM EDT...
  CHERRY HILL AROUND 730 PM EDT...
  SPRINGDALE AROUND 735 PM EDT...
  GREENTREE AND VOORHEES AROUND 740 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

HEAVY RAIN WILL OCCUR WITH THESE STORMS AND CAUSE LOW-LYING AND 
POOR DRAINAGE FLOODING.

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 900 PM EDT FRIDAY
EVENING FOR NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3973 7468 3985 7539 4000 7529 3998 7527
      4001 7521 4003 7524 4004 7523 4004 7463
TIME...MOT...LOC 2303Z 275DEG 16KT 3994 7516

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 10:12 AM EDT	Special Weather Statement	PHI	Ocean	33 min
Jun 22, 11:57 AM EDT	Special Weather Statement	PHI	Ocean	63 min
Jun 22, 12:15 PM EDT	Special Weather Statement	PHI	Ocean	60 min
Jun 22, 12:18 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	42 min
Jun 22, 12:21 PM EDT	Special Marine Warning	PHI		84 min
Jun 22, 12:23 PM EDT	Special Marine Warning	PHI		97 min
Jun 22, 12:44 PM EDT	Areal Flood Advisory	PHI	Ocean	2 hr
Jun 22, 12:53 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	52 min
Jun 22, 12:59 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	61 min
Jun 22, 1:10 PM EDT	Flash Flood Warning	PHI	Ocean	6 hr
Jun 22, 1:37 PM EDT	Special Weather Statement	PHI	Burlington	83 min
Jun 22, 1:42 PM EDT	Special Marine Warning	PHI		63 min
Jun 22, 1:46 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	59 min
Jun 22, 1:49 PM EDT	Special Weather Statement	PHI	Ocean	56 min
Jun 22, 1:59 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	73 min
Jun 22, 2:04 PM EDT	Special Marine Warning	PHI		56 min
Jun 22, 2:31 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Monmouth, Ocean	119 min
Jun 22, 2:34 PM EDT	Special Weather Statement	PHI	Atlantic	56 min
Jun 22, 2:39 PM EDT	Special Marine Warning	PHI		96 min
Jun 22, 2:42 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	63 min
Jun 22, 2:46 PM EDT	Special Weather Statement	PHI	Monmouth	59 min
Jun 22, 2:51 PM EDT	Special Marine Warning	PHI		54 min
Jun 22, 3:16 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Ocean	59 min
Jun 22, 3:28 PM EDT	Special Marine Warning	PHI		62 min
Jun 22, 3:40 PM EDT	Special Marine Warning	PHI		65 min
Jun 22, 3:43 PM EDT	Areal Flood Advisory	PHI	Atlantic	2 hr
Jun 22, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	65 min
Jun 22, 4:00 PM EDT	Flash Flood Warning	PHI	Burlington	43 min
Jun 22, 4:05 PM EDT	Special Marine Warning	PHI		85 min
Jun 22, 4:09 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	66 min
Jun 22, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	44 min
Jun 22, 4:15 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Ocean	60 min
Jun 22, 4:26 PM EDT	Special Marine Warning	PHI		94 min
Jun 22, 4:27 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Ocean	2 hr
Jun 22, 4:49 PM EDT	Special Weather Statement	PHI	Cape May	56 min
Jun 22, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	45 min
Jun 22, 5:05 PM EDT	Special Weather Statement	PHI	Atlantic, Ocean	55 min
Jun 22, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	59 min
Jun 22, 5:23 PM EDT	Special Marine Warning	PHI		97 min
Jun 22, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Morris, Somerset	42 min
Jun 22, 5:48 PM EDT	Special Weather Statement	PHI	Mercer	57 min
Jun 22, 5:54 PM EDT	Special Marine Warning	PHI		96 min
Jun 22, 6:13 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester, Mercer, Ocean, Salem	62 min
Jun 22, 6:16 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester, Mercer, Ocean, Salem	119 min
Jun 22, 7:02 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	102 min
Jun 22, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	Salem	54 min
Jun 22, 7:30 PM EDT	Special Marine Warning	PHI		60 min
Jun 22, 7:42 PM EDT	Flash Flood Warning	PHI	Salem	93 min
Jun 22, 7:52 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Mercer, Monmouth	73 min
Jun 22, 7:57 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	69 min
Jun 22, 2:42 AM EDT	Special Weather Statement	PHI	Carbon	63 min
Jun 22, 2:51 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	54 min
Jun 22, 3:25 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	50 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012 Severe Thunderstorm Warnings in Pennsylvania, 2012 Every 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.