Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

July 4, 2021Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 4, 2021, 5:38 PM EDT for Ocean County, New Jersey. It was in force for 37 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, 5:38 PM EDT (21:38 UTC)
Expired
Jul 4, 2021, 6:15 PM EDT
In force
37 min
Issued by
NWS Philadelphia/Mount Holly

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 21:40 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, 9.6 hours before the alert went out and 189 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.

914 
WWUS81 KPHI 042138
SPSPHI

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

NJZ020-026-042215-
Coastal Ocean-Ocean-
538 PM EDT Sun Jul 4 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL OCEAN COUNTY...

At 538 PM EDT, a strong thunderstorm was located over Tuckerton, or
16 miles north of Atlantic City, moving southeast at 10 mph.

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

Locations impacted include...
Tuckerton, Surf City, Beach Haven West and Mystic Island. 

This includes Garden State Parkway between mile markers 56 and 61.
 
If outdoors, consider seeking shelter inside a building.

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

LAT...LON 3945 7420 3955 7443 3957 7442 3958 7440
      3963 7439 3968 7435 3964 7406
TIME...MOT...LOC 2138Z 297DEG 10KT 3960 7435 

$$

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, 3:28 PM EDTSpecial Weather StatementPHIBurlington32 min
Jul 4, 4:05 PM EDTSpecial Weather StatementPHIBurlington25 min
Jul 4, 4:39 PM EDTSpecial Weather StatementPHIOcean36 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.