Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 196, NWS Philadelphia/Mount Holly

August 3, 20204 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2020, 6:48 PM EDT for 4 counties in New Jersey. It was in force for 27 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 3, 2020, 6:48 PM EDT (22:48 UTC)
Expired
Aug 3, 2020, 7:15 PM EDT
In force
27 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 53 km from the middle of the area, began a volume at 22:47 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, 10.8 hours before the alert went out and 195 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 2020-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1097 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 2020-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
1097 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
826 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

192 
WUUS51 KPHI 032248
SVRPHI
NJC001-005-007-015-032315-
/O.NEW.KPHI.SV.W.0196.200803T2248Z-200803T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
648 PM EDT Mon Aug 3 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Atlantic County in southern New Jersey...
  Southeastern Camden County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Southern Burlington County in southern New Jersey...

* Until 715 PM EDT.

* At 648 PM EDT, a severe thunderstorm was located over Victory
  Lakes, or 10 miles north of Vineland, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Evesham, Glassboro, Lindenwold, Hammonton, Clayton, Berlin,
  Shamong, Buena, Chesilhurst, Newfield, Franklinville, Sicklerville,
  Atsion, Atco, Victory Lakes, Wharton State Forest, Williamstown,
  Malaga, Batsto and Marlton Lakes.

This includes Atlantic City Expressway between mile markers 23 and
41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3946 7491 3961 7512 3991 7491 3972 7451
TIME...MOT...LOC 2248Z 216DEG 28KT 3961 7493 

HAIL...<.75IN
WIND...60MPH
 
$$

Robertson
1 follow-up statement
350 
WWUS51 KPHI 032304
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
704 PM EDT Mon Aug 3 2020

NJC001-005-007-015-032315-
/O.CON.KPHI.SV.W.0196.000000T0000Z-200803T2315Z/
Atlantic NJ-Camden NJ-Gloucester NJ-Burlington NJ-
704 PM EDT Mon Aug 3 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTH CENTRAL ATLANTIC...SOUTHEASTERN CAMDEN...EAST CENTRAL
GLOUCESTER AND SOUTHERN BURLINGTON COUNTIES...

At 704 PM EDT, a severe thunderstorm was located over Chesilhurst, or
19 miles northeast of Vineland, moving northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Evesham, Lindenwold, Hammonton, Berlin, Shamong, Chesilhurst, Atco,
Sicklerville, Wharton State Forest, Atsion, Marlton Lakes,
Williamstown, Marlton, Springdale, Greentree, Pine Hill, Clementon,
Medford Lakes, Gibbsboro and Pine Valley.

This includes Atlantic City Expressway between mile markers 32 and
41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3963 7481 3972 7505 3991 7491 3972 7451
TIME...MOT...LOC 2304Z 216DEG 28KT 3971 7483 

HAIL...<.75IN
WIND...60MPH
 
$$

Robertson

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 8:09 PM EDTSpecial Marine WarningPHI36 min
Aug 2, 8:53 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean51 hr
Aug 2, 8:53 PM EDTHigh Surf AdvisoryPHIAtlantic, Cape May, Monmouth, Ocean51 hr
Aug 2, 9:01 PM EDTSpecial Weather StatementPHIAtlantic44 min
Aug 2, 10:18 PM EDTSpecial Weather StatementPHIWarren42 min
Aug 2, 11:42 PM EDTSpecial Weather StatementPHICumberland33 min
Aug 2, 11:49 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more41 min
Aug 3, 5:08 AM EDTTropical Storm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more39 hr
Aug 3, 4:26 PM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more38 hr
Aug 3, 6:03 PM EDTSpecial Marine WarningPHI12 min
Aug 3, 6:05 PM EDTSevere Thunderstorm WarningPHICumberland22 min
Aug 3, 6:19 PM EDTSpecial Weather StatementPHISalem26 min
Aug 3, 6:32 PM EDTSpecial Weather StatementPHICamden, Cumberland, Gloucester, Salem28 min
Aug 3, 6:59 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester31 min
Aug 3, 7:02 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem28 min
Aug 3, 7:12 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Monmouth, Ocean48 min
Aug 3, 7:20 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer, Monmouth40 min
Aug 3, 7:43 PM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean62 min
Aug 3, 7:52 PM EDTSpecial Marine WarningPHI73 min
Aug 3, 7:56 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean, Somerset52 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020

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.