Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

August 27, 2021Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 27, 2021, 4:56 PM EDT for Atlantic County, New Jersey. It was in force for 34 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 27, 2021, 4:56 PM EDT (20:56 UTC)
Expired
Aug 27, 2021, 5:30 PM EDT
In force
34 min
Issued by
NWS Philadelphia/Mount Holly
Hail
0.25 in
Wind
40

County Atlantic County, NJ

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 20:59 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.9 hours before the alert went out and 173 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, Wallops Is Stn, VA at 12:00Z on 2021-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1436 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, Wallops Is Stn, VA at 12:00Z on 2021-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
1436 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

903 
WWUS81 KPHI 272056
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
456 PM EDT Fri Aug 27 2021
 
NJZ021-022-272130-
Cumberland NJ-Atlantic NJ-
456 PM EDT Fri Aug 27 2021

...A strong thunderstorm will impact portions of southwestern
Atlantic and east central Cumberland Counties through 530 PM EDT...

At 456 PM EDT, Doppler radar was tracking a strong thunderstorm over
Dorothy, or 12 miles southeast of Vineland, moving east at 5 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Vineland, Millville, Cumberland, Egg Harbor City, Weymouth, Estell
Manor, Port Republic, Corbin City, Pomona, Mays Landing, English
Creek, Dorothy and Mizpah.

This includes the following highways...
 Garden State Parkway between mile markers 40 and 44.
 Atlantic City Expressway between mile markers 8 and 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
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 3942 7508 3956 7467 3950 7448 3931 7466
      3935 7505
TIME...MOT...LOC 2056Z 284DEG 6KT 3940 7479 

MAX HAIL SIZE...0.25 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 27, 1:33 PM EDTAreal Flood AdvisoryPHIBurlington, Camden83 min
Aug 27, 2:18 PM EDTSmall Craft AdvisoryPHI44 hr
Aug 27, 2:28 PM EDTSpecial Weather StatementPHIAtlantic47 min
Aug 27, 2:33 PM EDTAreal Flood AdvisoryPHIWarren109 min
Aug 27, 2:37 PM EDTSevere Thunderstorm WarningPHIOcean38 min
Aug 27, 2:38 PM EDTSevere Thunderstorm WarningPHIWarren35 min
Aug 27, 2:59 PM EDTSevere Thunderstorm WarningPHIOcean46 min
Aug 27, 3:07 PM EDTSevere Thunderstorm WarningPHIWarren24 min
Aug 27, 3:16 PM EDTSpecial Weather StatementPHIBurlington44 min
Aug 27, 3:30 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean45 min
Aug 27, 3:38 PM EDTSpecial Weather StatementPHICamden52 min
Aug 27, 3:45 PM EDTSpecial Weather StatementPHIOcean30 min
Aug 27, 3:54 PM EDTSpecial Weather StatementPHIAtlantic51 min
Aug 27, 3:59 PM EDTSpecial Weather StatementPHIOcean46 min
Aug 27, 4:06 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester39 min
Aug 27, 4:37 PM EDTAreal Flood AdvisoryPHIGloucester106 min
Aug 27, 4:46 PM EDTSpecial Marine WarningPHI43 min
Aug 27, 5:02 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland29 min
Aug 27, 5:09 PM EDTAreal Flood AdvisoryPHIAtlantic, Cape May, Cumberland2 hr
Aug 27, 5:21 PM EDTSpecial Weather StatementPHIMiddlesex39 min
Aug 27, 5:29 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset3 hr
Aug 27, 5:44 PM EDTFlash Flood WarningPHIMiddlesex4 hr
Aug 27, 6:52 PM EDTAreal Flood AdvisoryPHISalem98 min
Aug 27, 1:20 PM EDTAreal Flood AdvisoryPHICarbon, Monroe2 hr
Aug 27, 1:36 PM EDTSpecial Weather StatementPHIMonroe24 min
Aug 27, 1:52 PM EDTSevere Thunderstorm WarningPHIChester53 min
Aug 27, 2:12 PM EDTSpecial Weather StatementPHINorthampton33 min
Aug 27, 2:18 PM EDTAreal Flood AdvisoryPHIChester93 min
Aug 27, 2:32 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe, Northampton28 min
Aug 27, 2:42 PM EDTSevere Thunderstorm WarningPHIChester14 min
Aug 27, 3:44 PM EDTSpecial Weather StatementPHIDelaware31 min
Aug 27, 6:29 PM EDTAreal Flood AdvisoryPHIBerks3 hr
Aug 27, 6:41 PM EDTSpecial Weather StatementPHIBerks34 min
Aug 27, 7:17 PM EDTFlash Flood WarningPHIBerks3 hr
Aug 27, 3:48 PM EDTAreal Flood AdvisoryPHINew Castle102 min
Aug 27, 5:11 PM EDTAreal Flood AdvisoryPHINew Castle3 hr
Aug 27, 5:39 PM EDTSpecial Weather StatementPHINew Castle36 min
Aug 27, 6:10 PM EDTAreal Flood AdvisoryPHINew Castle2 hr
Aug 27, 7:10 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's, Talbot65 min
Aug 27, 7:37 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's34 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.