Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

July 2, 2021Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 2, 2021, 4:47 PM EDT for Sussex County, New Jersey. It was in force for 28 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 2, 2021, 4:47 PM EDT (20:47 UTC)
Expired: Jul 2, 2021, 5:15 PM EDT
In force: 28 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 144 km from the middle of the area, began a volume at 20:49 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, 8.8 hours before the alert went out and 151 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: 51 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

035 
WWUS81 KPHI 022047
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
447 PM EDT Fri Jul 2 2021

NJZ001-022115-
Sussex-
447 PM EDT Fri Jul 2 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SUSSEX COUNTY...

At 447 PM EDT, a strong thunderstorm was located over Vernon Valley,
or 9 miles west of Warwick, moving east at 30 mph.

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

Locations impacted include...
Franklin, Hamburg, Sussex, Highland Lake, Vernon Valley and
Pellettown.

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

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4132 7461 4120 7436 4113 7446 4108 7471
      4127 7477 4133 7463
TIME...MOT...LOC 2047Z 251DEG 25KT 4124 7453 

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 11:31 PM EDT	Special Weather Statement	PHI	Salem	29 min
Jul 1, 11:40 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	39 min
Jul 2, 4:31 AM EDT	Areal Flood Warning	PHI	Cumberland	6 hr
Jul 2, 10:40 AM EDT	Areal Flood Warning	PHI	Cumberland	6 hr
Jul 2, 11:16 AM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	119 min
Jul 2, 12:12 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	97 min
Jul 2, 1:11 PM EDT	Flash Flood Warning	PHI	Gloucester, Salem	59 min
Jul 2, 1:47 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean, Salem	116 min
Jul 2, 3:48 PM EDT	Small Craft Advisory	PHI		31 hr
Jul 2, 6:42 PM EDT	Special Weather Statement	PHI	Warren	48 min
Jul 2, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	52 min
Jul 2, 7:25 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	50 min
Jul 2, 7:33 PM EDT	Special Weather Statement	PHI	Cumberland	42 min
Jul 2, 7:41 PM EDT	Flash Flood Warning	PHI	Burlington, Camden	3 hr
Jul 2, 4:54 PM EDT	Flash Flood Warning	PHI	Montgomery, Philadelphia	5 hr
Jul 2, 5:29 PM EDT	Special Weather Statement	PHI	Carbon	46 min
Jul 2, 5:44 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	46 min
Jul 1, 9:38 PM EDT	Special Weather Statement	PHI	Queen Anne's, Talbot	67 min
Jul 1, 10:07 PM EDT	Special Weather Statement	PHI	Kent	38 min
Jul 1, 10:35 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	21 min

Nearby

Special Weather Statements in New Jersey, 2021 Every special weather statement in 2021

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.