Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

July 4, 2021Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 4, 2021, 3:28 PM EDT for Burlington County, New Jersey. It was in force for 32 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 4, 2021, 3:28 PM EDT (19:28 UTC)
Expired
Jul 4, 2021, 4:00 PM EDT
In force
32 min
Issued by
NWS Philadelphia/Mount Holly

County Burlington County, NJ

The radar

The Philadelphia radar (KDIX), 11 km from the middle of the area, began a volume at 19:27 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, 7.5 hours before the alert went out and 169 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
519 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

734 
WWUS81 KPHI 041928
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
328 PM EDT Sun Jul 4 2021

NJZ013-019-020-042000-
Northwestern Burlington-Ocean-Western Monmouth-
328 PM EDT Sun Jul 4 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN OCEAN AND
NORTHEASTERN BURLINGTON COUNTIES...

At 327 PM EDT, a strong thunderstorm was located over Georgetown, or
12 miles southeast of Trenton, moving southeast at 20 mph.

Wind gusts up to 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Jackson, Wrightstown, Cassville, Browns Mills, Woodruff, Georgetown,
Country Lake Estates, New Egypt, Fort Dix and McGuire AFB.

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

LAT...LON 3992 7447 3992 7450 4004 7469 4014 7464
      4009 7428
TIME...MOT...LOC 1927Z 292DEG 19KT 4009 7460 

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 1:25 AM EDTDense Fog AdvisoryPHIHunterdon, Warren7 hr
Jul 4, 3:01 PM EDTSpecial Weather StatementPHIOcean29 min
Jul 4, 3:02 PM EDTSpecial Weather StatementPHIBurlington28 min
Jul 4, 3:04 PM EDTSpecial Weather StatementPHIOcean26 min
Jul 4, 4:05 PM EDTSpecial Weather StatementPHIBurlington25 min
Jul 4, 4:39 PM EDTSpecial Weather StatementPHIOcean36 min
Jul 4, 5:38 PM EDTSpecial Weather StatementPHIOcean37 min
Jul 4, 5:39 PM EDTSpecial Marine WarningPHI66 min
Jul 4, 6:23 PM EDTSpecial Weather StatementPHIAtlantic37 min

Nearby

Special Weather Statements in New Jersey, 2021Every 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.