Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 283, NWS Philadelphia/Mount Holly

August 12, 2023Burlington County, Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 12, 2023, 1:45 PM EDT for Burlington County, Camden County, New Jersey. It was in force for 25 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 12, 2023, 1:45 PM EDT (17:45 UTC)
Expired: Aug 12, 2023, 2:10 PM EDT
In force: 25 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Burlington County, NJ, Camden County, NJ

The radar

The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 17:45 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.

What was reported inside it

Time	Report	Where	Remark
Aug 12, 1:47 PM EDT	TSTM WND DMG	Lindenwold, NJ	Three trees down in Lindenwold. Time estimated via radar.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 5.8 hours before the alert went out and 207 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1539 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

919 
WUUS51 KPHI 121745
SVRPHI
NJC005-007-121830-
/O.NEW.KPHI.SV.W.0283.230812T1745Z-230812T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
145 PM EDT Sat Aug 12 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Camden County in southern New Jersey...
  Central Burlington County in southern New Jersey...

* Until 230 PM EDT.

* At 145 PM EDT, a severe thunderstorm was located over Lindenwold,
  or 8 miles southeast of Gloucester City, moving east at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Gloucester City, Cherry Hill, Evesham, Voorhees, Medford,
  Lindenwold, Bellmawr, Berlin, Tabernacle, Shamong, Magnolia,
  Barclay-Kingston, Echelon, Marlton, Leisuretowne, Ashland,
  Springdale, Atco, Greentree and Marlton Lakes.

This includes the following highways...
 New Jersey Turnpike near exit 3.
 Interstate 295 in New Jersey between mile markers 28 and 34.
 Atlantic City Expressway near mile marker 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3976 7462 3975 7503 3978 7505 3978 7507
      3989 7510 3997 7464
TIME...MOT...LOC 1745Z 264DEG 15KT 3981 7500 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

1 follow-up statement

939 
WWUS51 KPHI 121810
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
210 PM EDT Sat Aug 12 2023

NJC005-007-121819-
/O.CAN.KPHI.SV.W.0283.000000T0000Z-230812T1830Z/
Camden NJ-Burlington NJ-
210 PM EDT Sat Aug 12 2023

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMDEN AND CENTRAL
BURLINGTON COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

Remember, a Severe Thunderstorm Warning still remains in effect for 
southern Camden County and southwestern Burlington County until 2:30 
PM EDT

LAT...LON 3976 7462 3975 7503 3978 7505 3978 7507
      3989 7510 3997 7464
TIME...MOT...LOC 1807Z 264DEG 15KT 3982 7487 

$$

Hoeflich

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 12:57 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	3 hr
Aug 12, 1:38 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Aug 12, 1:40 PM EDT	Special Weather Statement	PHI	Camden	35 min
Aug 12, 1:52 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	38 min
Aug 12, 2:37 PM EDT	Special Weather Statement	PHI	Mercer	38 min
Aug 12, 5:46 PM EDT	Special Weather Statement	PHI	Salem	44 min
Aug 12, 6:13 PM EDT	Special Weather Statement	PHI	Hunterdon	47 min
Aug 12, 7:09 PM EDT	Special Weather Statement	PHI	Sussex	36 min
Aug 12, 7:30 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	19 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023 Every severe thunderstorm warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.