Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 23, 2012Morris County, Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 23, 2012, 6:35 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 85 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, 6:35 PM EDT (22:35 UTC)
Expired: Jul 23, 2012, 8:00 PM EDT
In force: 85 min
Issued by: NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 22:37 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, 10.6 hours before the alert went out and 139 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.

439 
WWUS81 KPHI 232235
SPSPHI

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

NJZ001-008-240000-
MORRIS NJ-SUSSEX NJ-
635 PM EDT MON JUL 23 2012

...A STRONG THUNDERSTORM WILL AFFECT MORRIS AND SUSSEX COUNTIES...

AT 632 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 8 MILES NORTHWEST OF MONTAGUE...MOVING SOUTHEAST
AT 30 MPH. THE THUNDERSTORM WILL BE NEAR MONTAGUE...HAINESVILLE
AROUND 645 PM...HIGH POINT...SUSSEX AROUND 700 PM...VERNON VALLEY...
HIGHLAND LAKE AROUND 715 PM...GREEN POND...LAKE TELEMARK AROUND 730
PM...RIVERDALE AND BUTLER AROUND 745 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 4121 7437 4109 7449 4105 7449 4106 7446
      4102 7438 4101 7430 4098 7427 4090 7427
      4090 7433 4082 7432 4080 7436 4075 7436
      4110 7499 4116 7491 4129 7484 4135 7476
      4136 7469

$$

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, 4:56 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth, Somerset	94 min
Jul 23, 5:56 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Hunterdon, Mercer	64 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.