Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

August 23, 2021Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 23, 2021, 4:47 PM EDT for Atlantic 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
Aug 23, 2021, 4:47 PM EDT (20:47 UTC)
Expired
Aug 23, 2021, 5:15 PM EDT
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Hail
0.00 in
Wind
40

County Atlantic County, NJ

The radar

The Philadelphia radar (KDIX), 46 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 191 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 2021-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 150 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.193958Sfc1 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
150 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

366 
WWUS81 KPHI 232047
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
447 PM EDT Mon Aug 23 2021
 
NJZ020-022-025>027-232115-
Coastal Atlantic NJ-Coastal Ocean NJ-Ocean NJ-Atlantic NJ-
Southeastern Burlington NJ-
447 PM EDT Mon Aug 23 2021

...Strong thunderstorms will impact portions of southeastern
Atlantic, south central Ocean and southeastern Burlington Counties
through 515 PM EDT...

At 447 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 12 miles southeast of Surf City to Tuckerton to
near Wading River. Movement was southeast at 20 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Atlantic City, Pleasantville, Ventnor City, Brigantine, Absecon, Egg
Harbor City, Tuckerton, Surf City, Port Republic, Wading River, Bass
River State Forest, New Gretna, Beach Haven West and Mystic Island.

This includes the following highways...
 Garden State Parkway between mile markers 43 and 58.
 Atlantic City Expressway between mile markers 0 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3952 7418 3946 7424 3932 7447 3966 7458
      3965 7430 3966 7413
TIME...MOT...LOC 2047Z 318DEG 17KT 3956 7398 3957 7432 3961 7455 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Gorse

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 8:11 PM EDTAreal Flood AdvisoryPHIWarren6 hr
Aug 22, 8:47 PM EDTFlash Flood WarningPHISussex, Warren6 hr
Aug 22, 11:27 PM EDTAreal Flood WarningPHIMiddlesex29 hr
Aug 23, 2:09 AM EDTRiver Flood WarningPHIMorris, Passaic17 hr
Aug 23, 3:25 AM EDTAreal Flood WarningPHIMorris8 hr
Aug 23, 4:10 AM EDTRiver Flood WarningPHIMorris41 hr
Aug 23, 5:07 AM EDTAreal Flood WarningPHIWarren21 hr
Aug 23, 5:22 AM EDTAreal Flood WarningPHISomerset9 hr
Aug 23, 5:44 AM EDTAreal Flood WarningPHIHunterdon7 hr
Aug 23, 7:20 AM EDTRiver Flood WarningPHIHunterdon, Somerset7 hr
Aug 23, 7:47 AM EDTRiver Flood WarningPHIMorris, Passaic13 hr
Aug 23, 8:36 AM EDTAreal Flood WarningPHISomerset9 hr
Aug 23, 8:42 AM EDTRiver Flood WarningPHIMiddlesex, Somerset21 hr
Aug 23, 11:22 AM EDTRiver Flood WarningPHIMiddlesex, Somerset16 hr
Aug 23, 11:32 AM EDTRiver Flood WarningPHIEssex, Morris, Passaic5 days
Aug 23, 11:58 AM EDTRiver Flood WarningPHISomerset15 hr
Aug 23, 12:19 PM EDTRiver Flood WarningPHIBurlington33 hr
Aug 23, 12:51 PM EDTCoastal Flood StatementPHIOcean3 hr
Aug 23, 2:26 PM EDTAreal Flood WarningPHISussex14 hr
Aug 23, 2:26 PM EDTSpecial Weather StatementPHIOcean49 min
Aug 23, 3:12 PM EDTSpecial Weather StatementPHIOcean33 min
Aug 23, 3:15 PM EDTSevere Thunderstorm WarningPHIOcean45 min
Aug 23, 3:18 PM EDTSpecial Marine WarningPHI57 min
Aug 23, 3:38 PM EDTRiver Flood WarningPHIEssex, Morris, Passaic48 hr
Aug 23, 4:50 PM EDTSpecial Marine WarningPHI55 min
Aug 23, 5:13 PM EDTSpecial Weather StatementPHICamden32 min
Aug 23, 5:39 PM EDTSpecial Marine WarningPHI33 min
Aug 23, 6:46 PM EDTSpecial Marine WarningPHI64 min
Aug 22, 10:34 PM EDTAreal Flood AdvisoryPHICarbon, Lehigh, Northampton3 hr
Aug 22, 10:53 PM EDTFlash Flood WarningPHICarbon, Lehigh, Monroe, Montgomery, Northampton4 hr
Aug 22, 11:42 PM EDTAreal Flood AdvisoryPHIBerks3 hr
Aug 23, 12:32 AM EDTRiver Flood WarningPHIMonroe10 hr
Aug 23, 12:55 AM EDTRiver Flood WarningPHIMonroe10 hr
Aug 23, 2:36 AM EDTAreal Flood WarningPHICarbon, Monroe21 hr
Aug 23, 3:50 AM EDTRiver Flood WarningPHICarbon3 hr
Aug 23, 3:50 AM EDTRiver Flood WarningPHILehigh, Northampton11 hr
Aug 23, 8:28 AM EDTAreal Flood WarningPHILehigh7 hr
Aug 23, 4:41 PM EDTSpecial Weather StatementPHIMontgomery34 min
Aug 23, 7:14 PM EDTSevere Thunderstorm WarningPHIKent, New Castle31 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.