Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 9, 2018Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 9, 2018, 2:06 AM EDT for Morris County, New Jersey. It was in force for 24 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 9, 2018, 2:06 AM EDT (06:06 UTC)
Expired: Aug 9, 2018, 2:30 AM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 94 km from the middle of the area, began a volume at 06:10 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, 6.1 hours before the alert went out and 130 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: 583 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

074 
WWUS81 KPHI 090606
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
206 AM EDT THU AUG 9 2018

NJZ008-010-090630-
Morris-Somerset-
206 AM EDT THU AUG 9 2018

...A STRONG THUNDERSTORM WILL AFFECT MORRIS AND NORTHEASTERN SOMERSET
COUNTIES...

At 205 AM EDT, a strong thunderstorm was located over Morristown,
moving east at 30 mph.

Winds up to 40 mph are possible with this storm.

Locations impacted include...
Morristown, Dover, Madison, Florham Park, East Hanover, Lincoln Park,
Chatham, Boonton, Wharton, Rockaway, Morris Plains, Mendham, Mountain
Lakes, Riverdale, Peapack And Gladstone, Chester, Victory Gardens,
Far Hills, Millington and Succasunna.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4091 7433 4086 7432 4079 7437 4076 7437
      4075 7436 4067 7446 4066 7445 4066 7440
      4063 7442 4061 7444 4061 7468 4085 7476
      4100 7430 4097 7428 4092 7429 4090 7427
TIME...MOT...LOC 0605Z 261DEG 28KT 4075 7450 

$$

Meola

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 8:09 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Monmouth	3 hr
Aug 8, 9:58 PM EDT	Special Weather Statement	PHI	Monmouth	32 min
Aug 9, 5:29 PM EDT	Coastal Flood Advisory	PHI	Burlington, Mercer	10 hr
Aug 8, 10:42 PM EDT	Special Weather Statement	PHI	New Castle	63 min
Aug 9, 12:03 AM EDT	Special Weather Statement	PHI	Kent	57 min

Nearby

Special Weather Statements in New Jersey, 2018 Every special weather statement in 2018

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.