Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

August 1, 2011Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 1, 2011, 4:09 PM EDT for Camden County, New Jersey. It was in force for 66 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, 4:09 PM EDT (20:09 UTC)
Expired: Aug 1, 2011, 5:15 PM EDT
In force: 66 min
Issued by: NWS Philadelphia/Mount Holly

County Camden County, NJ

The radar

The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 20:09 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, 8.2 hours before the alert went out and 126 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.

017 
WWUS81 KPHI 012009
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
409 PM EDT MON AUG 1 2011

NJZ018-019-027-PAZ068-069-071-012115-
BUCKS PA-CAMDEN NJ-MONTGOMERY PA-NORTHWESTERN BURLINGTON NJ-
PHILADELPHIA PA-SOUTHEASTERN BURLINGTON NJ-
409 PM EDT MON AUG 1 2011

...A STRONG THUNDERSTORM WILL AFFECT BUCKS...BURLINGTON...CAMDEN...
MONTGOMERY AND PHILADELPHIA COUNTIES...

AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
DEVELOPING STRONG THUNDERSTORM 6 MILES NORTH OF 
PHILADELPHIA...MOVING EAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR 
ROCKLEDGE...HOLMESBURG AROUND 415 PM...DELANCO...RIVERSIDE AROUND 
430 PM...WILLINGBORO...LUMBERTON AROUND 445 PM...PEMBERTON...MOUNT 
HOLLY AROUND 500 PM...PEMBERTON HEIGHTS AND WRIGHTSTOWN AROUND 515 
PM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL LIKELY PRODUCE SMALL HAIL AND HEAVY RAIN.

LAT...LON 3979 7480 4006 7521 4015 7514 4010 7457
      4009 7457 4007 7457

$$

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, 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, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	59 min
Aug 1, 7:17 PM EDT	Special Marine Warning	PHI		118 min
Jul 31, 10:00 PM EDT	Special Weather Statement	PHI	Chester	60 min
Aug 1, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	51 min
Aug 1, 3:46 PM EDT	Special Weather Statement	PHI	Berks	89 min
Aug 1, 4:00 PM EDT	Severe Thunderstorm Warning	PHI	Berks	75 min
Aug 1, 4:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery, Philadelphia	87 min
Aug 1, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	42 min
Aug 1, 5:11 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	2 hr
Aug 1, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Philadelphia	53 min
Aug 1, 4:07 PM EDT	Special Weather Statement	PHI	Cecil	53 min
Aug 1, 4:46 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	48 min
Aug 1, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	78 min
Aug 1, 6:12 PM EDT	Areal Flood Advisory	PHI	Kent, Queen Anne's	2 hr
Aug 1, 6:41 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	18 min
Aug 1, 7:31 PM EDT	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's	119 min
Aug 1, 7:46 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	38 min
Aug 1, 3:15 PM EDT	Special Weather Statement	PHI	Sussex	45 min
Aug 1, 3:38 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	37 min
Aug 1, 3:59 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr

Nearby

Special Weather Statements in New Jersey, 2011 Every special weather statement 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.