Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

September 28, 201110 counties in New Jersey; 7 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 28, 2011, 1:54 AM EDT for 10 counties in New Jersey; 7 counties in Pennsylvania. It was in force for 51 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: Sep 28, 2011, 1:54 AM EDT (05:54 UTC)
Expired: Sep 28, 2011, 2:45 AM EDT
In force: 51 min
Issued by: NWS Philadelphia/Mount Holly

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 05:59 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

Brookhaven, NY (KOKX), launched 00:00Z, 5.9 hours before the alert went out and 178 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: 10 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 500 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 43 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.

073 
WWUS81 KPHI 280554
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
154 AM EDT WED SEP 28 2011

DEZ001-NJZ001-007>010-012-015>019-021>023-027-PAZ054-055-060>062-
067>071-280645-
ATLANTIC NJ-BERKS PA-BUCKS PA-CAMDEN NJ-CAPE MAY NJ-CARBON PA-
CHESTER PA-CUMBERLAND NJ-DELAWARE PA-GLOUCESTER NJ-HUNTERDON NJ-
LEHIGH PA-MERCER NJ-MIDDLESEX NJ-MONROE PA-MONTGOMERY PA-MORRIS NJ-
NEW CASTLE DE-NORTHAMPTON PA-NORTHWESTERN BURLINGTON NJ-
PHILADELPHIA PA-SALEM NJ-SOMERSET NJ-SOUTHEASTERN BURLINGTON NJ-
SUSSEX NJ-WARREN NJ-
154 AM EDT WED SEP 28 2011

...SHOWERS WITH HEAVY RAINFALL WILL AFFECT SUSSEX...WARREN...
MORRIS...HUNTERDON...SOMERSET...SALEM...CUMBERLAND...CAMDEN...
GLOUCESTER...MERCER...MIDDLESEX...DELAWARE...PHILADELPHIA...
CHESTER...MONTGOMERY...BERKS...LEHIGH...NORTHAMPTON...CARBON...
BUCKS...MONROE...NEW CASTLE...CAPE MAY...ATLANTIC AND BURLINGTON
COUNTIES...

AT 150 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS WITH HEAVY RAINFALL MOVING NORTH AROUND 20 MILES AN HOUR 
THROUGH THE DELAWARE VALLEY. THE BACK EDGE OF THE HEAVIEST RAIN
WAS ALONG A LINE EXTENDING FROM WILMINGTON TO 15 MILES NORTH OF CAPE 
MAY.

BRIEF PERIODS OF VERY HEAVY RAINFALL WILL OCCUR OVER AREAS THAT HAVE 
BEEN SOAKED AGAIN THIS MONTH OF SEPTEMBER. BE ALERT FOR THE 
POSSIBILITY OF LOCALIZED FLOODING....ESPECIALLY NEAR THE DELAWARE 
RIVER INTO WESTERN NEW JERSEY.  AN EMBEDDED THUNDERSTORM IS ALSO 
POSSIBLE.

LAT...LON 4120 7438 4108 7449 4104 7449 4105 7444
      4102 7442 3917 7480 3967 7552 3969 7552
      3968 7554 3972 7560 4086 7566 4123 7554
      4126 7514 4116 7516 4115 7509 4109 7501
      4115 7491 4131 7480 4135 7468

$$

FORECASTER: DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 27, 11:53 PM EDT	Coastal Flood Statement	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Sep 28, 3:56 AM EDT	Flash Flood Watch	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	39 hr
Sep 28, 4:09 AM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Warren	51 min
Sep 28, 4:10 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	7 hr
Sep 28, 4:49 AM EDT	Areal Flood Warning	PHI	Hunterdon, Morris, Warren	7 hr
Sep 28, 5:45 AM EDT	River Flood Warning	PHI	Hunterdon, Somerset	22 hr
Sep 28, 6:29 AM EDT	Flash Flood Warning	PHI	Sussex, Warren	7 hr
Sep 28, 9:17 AM EDT	Special Weather Statement	PHI	Sussex	58 min
Sep 28, 10:02 AM EDT	Coastal Flood Statement	PHI	Burlington, Camden, Gloucester, Salem	8 hr
Sep 28, 12:00 PM EDT	Areal Flood Warning	PHI	Hunterdon, Morris, Somerset, Warren	6 hr
Sep 28, 3:29 PM EDT	Coastal Flood Statement	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean	9 hr
Sep 28, 5:58 PM EDT	Areal Flood Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	26 hr
Sep 27, 8:16 PM EDT	Areal Flood Warning	PHI	Carbon, Monroe	3 hr
Sep 28, 4:38 AM EDT	Areal Flood Warning	PHI	Bucks	3 hr
Sep 28, 5:45 AM EDT	Special Weather Statement	PHI	Montgomery	60 min
Sep 28, 11:15 AM EDT	Special Weather Statement	PHI	Berks	60 min
Sep 28, 12:24 PM EDT	Special Weather Statement	PHI	Lehigh	51 min
Sep 28, 3:20 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery	55 min
Sep 28, 3:59 PM EDT	Special Weather Statement	PHI	Berks, Chester, Delaware, Montgomery	61 min
Sep 28, 4:21 PM EDT	Special Weather Statement	PHI	Carbon	54 min
Sep 28, 4:33 PM EDT	Areal Flood Advisory	PHI	Berks, Chester, Montgomery	2 hr
Sep 28, 4:36 PM EDT	Flash Flood Warning	PHI	Berks, Chester	3 hr
Sep 28, 4:48 PM EDT	Special Weather Statement	PHI	Northampton	57 min
Sep 28, 4:59 PM EDT	Areal Flood Advisory	PHI	Bucks, Northampton	3 hr
Sep 28, 5:02 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	58 min
Sep 28, 5:12 PM EDT	Special Weather Statement	PHI	Lehigh	63 min
Sep 28, 5:29 PM EDT	Special Weather Statement	PHI	Carbon	61 min
Sep 28, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	58 min
Sep 28, 5:42 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more	3 hr
Sep 28, 6:31 PM EDT	Special Weather Statement	PHI	Northampton	59 min
Sep 28, 6:35 PM EDT	Areal Flood Warning	PHI	Bucks	2 hr
Sep 28, 6:41 PM EDT	Flash Flood Warning	PHI	Carbon, Lehigh, Monroe, Northampton	3 hr
Sep 28, 7:44 PM EDT	Areal Flood Warning	PHI	Chester	3 hr
Sep 28, 8:30 AM EDT	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	2 hr
Sep 28, 9:32 AM EDT	Areal Flood Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	3 hr
Sep 28, 10:05 AM EDT	Special Weather Statement	PHI	Caroline	40 min
Sep 28, 1:40 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's	65 min
Sep 28, 1:58 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's	62 min
Sep 28, 2:14 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's, Talbot	2 hr
Sep 28, 2:59 PM EDT	Special Weather Statement	PHI	Cecil	61 min
Sep 28, 3:54 PM EDT	Special Weather Statement	PHI	Cecil	66 min
Sep 28, 9:10 AM EDT	Special Weather Statement	PHI	Sussex	35 min
Sep 28, 10:45 AM EDT	Special Weather Statement	PHI	Kent	60 min
Sep 28, 1:31 PM EDT	Special Weather Statement	PHI	Sussex	59 min
Sep 28, 2:41 PM EDT	Special Weather Statement	PHI	Kent	64 min

Nearby

Special Weather Statements in New Jersey, 2011 Special Weather Statements in Pennsylvania, 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.