Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 7, 2018Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2018, 4:27 PM EDT for Sussex County, New Jersey. It was in force for 48 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 7, 2018, 4:27 PM EDT (20:27 UTC)
Expired: Aug 7, 2018, 5:15 PM EDT
In force: 48 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 146 km from the middle of the area, began a volume at 20:30 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, 8.5 hours before the alert went out and 156 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: 1115 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 982 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

300 
WWUS81 KPHI 072027
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
427 PM EDT TUE AUG 7 2018

NJZ001-072115-
Sussex-
427 PM EDT TUE AUG 7 2018

...ANOTHER STRONG THUNDERSTORM WILL AFFECT NORTHERN SUSSEX COUNTY...

At 425 PM EDT, a strong thunderstorm was located over Montague, 
moving east at 25 mph.

Winds up to 40 mph and half inch hail are possible with this storm.

Locations impacted include...
Montague, Franklin, Hamburg, Sussex, Branchville, High Point, 
Pellettown, Highland Lake, Vernon Valley and Hainesville.

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 4125 7445 4124 7444 4111 7447 4110 7448
      4117 7490 4121 7486 4123 7487 4128 7484
      4135 7475 4135 7472 4136 7470
TIME...MOT...LOC 2026Z 275DEG 21KT 4128 7480 

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 12:19 PM EDT	Heat Advisory	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more	6 hr
Aug 7, 2:24 PM EDT	Areal Flood Advisory	PHI	Sussex	78 min
Aug 7, 3:31 PM EDT	Heat Advisory	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more	26 hr
Aug 7, 5:07 PM EDT	Special Weather Statement	PHI	Sussex	53 min
Aug 7, 5:46 PM EDT	Special Weather Statement	PHI	Morris, Sussex	59 min
Aug 7, 4:07 PM EDT	Special Weather Statement	PHI	Monroe	38 min
Aug 7, 4:44 PM EDT	Special Weather Statement	PHI	Monroe	61 min
Aug 7, 4:48 PM EDT	Special Weather Statement	PHI	Lehigh	57 min
Aug 7, 5:32 PM EDT	Special Weather Statement	PHI	Berks	58 min
Aug 7, 5:41 PM EDT	Special Weather Statement	PHI	Lehigh	49 min
Aug 7, 6:21 PM EDT	Special Weather Statement	PHI	Lehigh	54 min
Aug 7, 6:25 PM EDT	Special Weather Statement	PHI	Berks	65 min
Aug 7, 2:13 PM EDT	Special Weather Statement	PHI	Sussex	47 min
Aug 7, 4:50 PM EDT	Special Weather Statement	PHI	Kent	55 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.