Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 11, 2012Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 11, 2012, 6:49 PM EDT for Morris County, New Jersey. It was in force for 26 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 11, 2012, 6:49 PM EDT (22:49 UTC)
Expired: Aug 11, 2012, 7:15 PM EDT
In force: 26 min
Issued by: NWS Philadelphia/Mount Holly

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 110 km from the middle of the area, began a volume at 22:50 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 12:00Z, 10.8 hours before the alert went out and 137 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: 1829 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

288 
WWUS81 KPHI 112249
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
649 PM EDT SAT AUG 11 2012

NJZ008-112315-
MORRIS NJ-
649 PM EDT SAT AUG 11 2012

...STRONG THUNDERSTORMS WILL AFFECT MORRIS COUNTY...

AT 646 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STRONG THUNDERSTORMS ABOUT 15 MILES NORTH OF SOMERVILLE...MOVING 
NORTHEAST AT 25 MPH. THE THUNDERSTORMS WILL BE NEAR VICTORY GARDENS 
AROUND 700 PM...ROCKAWAY...DOVER AROUND 705 PM...WHITE MEADOW 
LAKE...WHARTON AROUND 710 PM AND LAKE TELEMARK AROUND 715 PM.

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

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.

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

LAT...LON 4077 7456 4076 7467 4078 7468 4100 7457
      4106 7444 4103 7442 4103 7441 4102 7438
      4102 7435 4101 7433

$$

FORECASTER:  DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 11:51 AM EDT	Special Weather Statement	PHI	Sussex, Warren	54 min
Aug 11, 11:57 AM EDT	Special Weather Statement	PHI	Cape May, Cumberland	63 min
Aug 11, 1:06 PM EDT	Special Weather Statement	PHI	Cumberland	39 min
Aug 11, 1:38 PM EDT	Special Marine Warning	PHI		37 min
Aug 11, 1:45 PM EDT	Special Weather Statement	PHI	Cape May	45 min
Aug 11, 2:12 PM EDT	Special Weather Statement	PHI	Cape May	48 min
Aug 11, 2:35 PM EDT	Special Weather Statement	PHI	Cape May	25 min
Aug 11, 3:01 PM EDT	Special Weather Statement	PHI	Cape May	44 min
Aug 11, 3:10 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May, Ocean	62 min
Aug 11, 3:25 PM EDT	Special Marine Warning	PHI		35 min
Aug 11, 4:04 PM EDT	Flash Flood Warning	PHI	Atlantic, Cape May	114 min
Aug 11, 5:20 PM EDT	Special Weather Statement	PHI	Atlantic	40 min
Aug 11, 6:42 PM EDT	Special Weather Statement	PHI	Salem	33 min
Aug 11, 6:52 PM EDT	Special Weather Statement	PHI	Somerset	23 min
Aug 11, 7:17 PM EDT	Special Weather Statement	PHI	Gloucester	28 min
Aug 11, 7:19 PM EDT	Special Weather Statement	PHI	Sussex	26 min
Aug 11, 7:56 PM EDT	Special Weather Statement	PHI	Mercer	34 min
Aug 11, 6:07 PM EDT	Special Weather Statement	PHI	Bucks	38 min
Aug 11, 6:11 PM EDT	Special Weather Statement	PHI	Chester	49 min
Aug 11, 7:33 PM EDT	Special Weather Statement	PHI	Bucks	27 min
Aug 11, 7:52 PM EDT	Special Weather Statement	PHI	Chester	23 min
Aug 11, 11:44 AM EDT	Special Weather Statement	PHI	Kent	61 min
Aug 11, 3:20 PM EDT	Special Weather Statement	PHI	Sussex	85 min
Aug 11, 4:21 PM EDT	Special Weather Statement	PHI	Sussex	39 min
Aug 11, 5:12 PM EDT	Special Weather Statement	PHI	Caroline	63 min
Aug 11, 7:09 PM EDT	Special Weather Statement	PHI	Kent	36 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.