Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 3, 2018Morris County, Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 3, 2018, 2:37 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 38 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, 2018, 2:37 PM EDT (18:37 UTC)
Expired: Aug 3, 2018, 3:15 PM EDT
In force: 38 min
Issued by: NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 18:41 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, 6.6 hours before the alert went out and 136 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: 1132 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

919 
WWUS81 KPHI 031837
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
237 PM EDT FRI AUG 3 2018

NJZ001-008-010-012-031915-
Morris-Sussex-Somerset-Middlesex-
237 PM EDT FRI AUG 3 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT MORRIS...SUSSEX...
NORTHEASTERN SOMERSET AND NORTH CENTRAL MIDDLESEX COUNTIES...

At 236 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Crandon Lakes to near Millburn.
Movement was north at 40 mph.

Winds up to 45 mph are possible with these storms.

Locations impacted include...
Morristown, Port Jervis, Newton, Dover, Madison, Hopatcong, Florham
Park, East Hanover, Lincoln Park, Kinnelon, Chatham, Boonton, Butler,
Wharton, Rockaway, Morris Plains, Mount Arlington, Franklin, Mendham
and Mountain Lakes.

Torrential rainfall is also occurring with these storms, 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 4120 7437 4109 7450 4104 7450 4105 7445
      4103 7442 4097 7428 4090 7427 4091 7433
      4076 7437 4075 7436 4067 7446 4066 7440
      4060 7443 4060 7435 4055 7439 4111 7498
      4116 7490 4135 7475 4136 7469
TIME...MOT...LOC 1836Z 198DEG 34KT 4117 7482 4077 7434 

$$

Meola

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 9:35 PM EDT	Special Weather Statement	PHI	Somerset	25 min
Aug 2, 10:05 PM EDT	Special Weather Statement	PHI	Morris, Somerset	55 min
Aug 3, 11:47 AM EDT	Special Marine Warning	PHI		88 min
Aug 3, 12:17 PM EDT	Special Weather Statement	PHI	Cape May	43 min
Aug 3, 12:37 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	38 min
Aug 3, 12:52 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	21 min
Aug 3, 1:01 PM EDT	Special Weather Statement	PHI	Hunterdon	44 min
Aug 3, 1:14 PM EDT	Special Weather Statement	PHI	Mercer	46 min
Aug 3, 1:27 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Somerset	48 min
Aug 3, 1:42 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Sussex, Warren	63 min
Aug 3, 2:00 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	30 min
Aug 3, 2:54 PM EDT	Special Marine Warning	PHI		20 min
Aug 3, 3:33 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	57 min
Aug 3, 4:31 PM EDT	Special Weather Statement	PHI	Salem	59 min
Aug 3, 4:45 PM EDT	Special Weather Statement	PHI	Warren	60 min
Aug 3, 5:25 PM EDT	Special Weather Statement	PHI	Monmouth, Ocean	50 min
Aug 3, 5:27 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester	63 min
Aug 3, 6:52 PM EDT	Special Weather Statement	PHI	Sussex, Warren	113 min
Aug 3, 7:56 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Aug 3, 3:42 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	63 min
Aug 3, 5:45 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery, Philadelphia	60 min
Aug 3, 7:37 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh	4 hr
Aug 3, 3:29 PM EDT	Special Weather Statement	PHI	Sussex	46 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.