Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 3, 20184 counties in New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 3, 2018, 1:42 PM EDT for 4 counties in New Jersey. It was in force for 63 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, 1:42 PM EDT (17:42 UTC)
Expired: Aug 3, 2018, 2:45 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 17:44 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, 5.7 hours before the alert went out and 154 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.

823 
WWUS81 KPHI 031742
SPSPHI

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

NJZ001-007>010-PAZ055-062-031845-
Morris-Hunterdon-Sussex-Somerset-Warren-Monroe-Northampton-
142 PM EDT FRI AUG 3 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT MORRIS...HUNTERDON...
SUSSEX...WARREN...NORTHWESTERN SOMERSET...EAST CENTRAL MONROE AND
NORTHEASTERN NORTHAMPTON COUNTIES...

At 142 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Bangor to Glen Gardner to near
Flemington. Movement was northeast at 35 mph.

Winds up to 45 mph are possible with these storms.

Locations impacted include...
Easton, Morristown, Port Jervis, Newton, Montague, Dover, Hopatcong,
Forks, Kinnelon, Hackettstown, Boonton, Wilson, Butler, Wharton,
Washington, Rockaway, Blairstown, Morris Plains, Bangor and Mount
Arlington.

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 4110 7449 4104 7450 4105 7445
      4102 7443 4100 7430 4099 7429 4044 7482
      4071 7530 4110 7506 4108 7503 4112 7495
      4118 7488 4130 7481 4135 7475 4136 7469
TIME...MOT...LOC 1742Z 212DEG 30KT 4082 7516 4069 7496 4056 7484 

$$

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, 2:00 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	30 min
Aug 3, 2:37 PM EDT	Special Weather Statement	PHI	Morris, Sussex	38 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.