Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 3, 2012Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 3, 2012, 5:42 PM EDT for Mercer County, New Jersey. It was in force for 63 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 3, 2012, 5:42 PM EDT (21:42 UTC)
Expired: Aug 3, 2012, 6:45 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly

County Mercer County, NJ

The radar

The Philadelphia radar (KDIX), 28 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 158 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: 1112 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 37 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.

898 
WWUS81 KPHI 032142
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
542 PM EDT FRI AUG 3 2012

NJZ012-013-015-032245-
MERCER NJ-MIDDLESEX NJ-WESTERN MONMOUTH NJ-
542 PM EDT FRI AUG 3 2012

...A STRONG THUNDERSTORM WILL AFFECT MERCER...MIDDLESEX AND MONMOUTH
COUNTIES...

AT 539 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 13 MILES EAST OF TRENTON...MOVING NORTH AT 5 MPH.
THE THUNDERSTORM WILL BE NEAR ROOSEVELT...WINDSOR AROUND 615 PM...
TWIN RIVERS...EDINBURG AROUND 630 PM...HIGHTSTOWN AND CLEARBROOK PARK
AROUND 645 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

LAT...LON 4017 7440 4011 7450 4012 7457 4014 7459
      4014 7461 4033 7464 4031 7435

$$

FORECASTER: HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 3:38 PM EDT	Special Weather Statement	PHI	Burlington	67 min
Aug 3, 4:17 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	58 min
Aug 3, 4:21 PM EDT	Special Marine Warning	PHI		84 min
Aug 3, 4:35 PM EDT	Special Weather Statement	PHI	Monmouth	55 min
Aug 3, 4:45 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	60 min
Aug 3, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	63 min
Aug 3, 5:35 PM EDT	Special Weather Statement	PHI	Mercer	55 min
Aug 3, 5:46 PM EDT	Areal Flood Advisory	PHI	Gloucester	101 min
Aug 3, 5:55 PM EDT	Special Weather Statement	PHI	Burlington	65 min
Aug 3, 6:20 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer	2 hr
Aug 3, 6:23 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	43 min
Aug 3, 2:39 PM EDT	Special Weather Statement	PHI	Chester	66 min
Aug 3, 4:15 PM EDT	Special Weather Statement	PHI	Delaware	60 min
Aug 3, 7:33 PM EDT	Special Weather Statement	PHI	Bucks	57 min
Aug 3, 2:58 PM EDT	Special Weather Statement	PHI	Sussex	62 min
Aug 3, 3:57 PM EDT	Special Weather Statement	PHI	New Castle	63 min
Aug 3, 4:14 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	3 hr
Aug 3, 4:58 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	40 min
Aug 3, 5:24 PM EDT	Special Weather Statement	PHI	Cecil	66 min

Nearby

Special Weather Statements in New Jersey, 2012 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.