Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 23, 2012Middlesex County, Monmouth County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 23, 2012, 4:56 PM EDT for Middlesex County, Monmouth County, Somerset County, New Jersey. It was in force for 94 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: Jul 23, 2012, 4:56 PM EDT (20:56 UTC)
Expired: Jul 23, 2012, 6:30 PM EDT
In force: 94 min
Issued by: NWS Philadelphia/Mount Holly

Counties Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 20:58 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, 8.9 hours before the alert went out and 128 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: 253 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 69 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.

571 
WWUS81 KPHI 232056
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
456 PM EDT MON JUL 23 2012

NJZ009-010-012>014-020-026-232230-
COASTAL OCEAN NJ-EASTERN MONMOUTH NJ-HUNTERDON NJ-MIDDLESEX NJ-
OCEAN NJ-SOMERSET NJ-WESTERN MONMOUTH NJ-
456 PM EDT MON JUL 23 2012

...STRONG THUNDERSTORMS WILL AFFECT HUNTERDON...MIDDLESEX... 
MONMOUTH...OCEAN AND SOMERSET COUNTIES...

AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTHEAST OF SOMERVILLE...MOVING
SOUTHEAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR NORTH BRUNSWICK...
MILLTOWN AROUND 515 PM...JAMESBURG...HELMETTA AROUND 530 PM...
ENGLISHTOWN...CONCORDIA AROUND 545 PM...MANALAPAN...FREEHOLD AROUND
600 PM...JACKSON MILLS AND WEST FREEHOLD AROUND 615 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 ARE POSSIBLE WITH THIS STORM.

EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING
FROM 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 4009 7403 4008 7432 4024 7449 4027 7448
      4059 7484 4073 7461 4069 7453 4065 7452
      4067 7447 4064 7441 4061 7442 4061 7432
      4057 7421 4054 7424 4047 7425 4043 7400
      4048 7402 4048 7400 4048 7399 4036 7396

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 11:26 AM EDT	Special Weather Statement	PHI	Sussex	94 min
Jul 23, 12:19 PM EDT	Special Weather Statement	PHI	Sussex	56 min
Jul 23, 12:32 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	73 min
Jul 23, 1:00 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	60 min
Jul 23, 1:11 PM EDT	Flash Flood Warning	PHI	Sussex	3 hr
Jul 23, 1:57 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	78 min
Jul 23, 2:24 PM EDT	Special Weather Statement	PHI	Warren	66 min
Jul 23, 2:44 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Warren	76 min
Jul 23, 2:47 PM EDT	Flash Flood Warning	PHI	Morris, Sussex, Warren	3 hr
Jul 23, 3:42 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	78 min
Jul 23, 5:56 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Hunterdon, Mercer	64 min
Jul 23, 6:35 PM EDT	Special Weather Statement	PHI	Morris, Sussex	85 min
Jul 23, 6:51 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	69 min
Jul 23, 7:39 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	2 hr
Jul 23, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	59 min
Jul 23, 4:31 PM EDT	Special Weather Statement	PHI	Berks	59 min
Jul 23, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh, Montgomery	51 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.