Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 284, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 12, 2023, 1:52 PM EDT for 4 counties in New Jersey. It was in force for 38 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 12, 2023, 1:52 PM EDT (17:52 UTC)
- Expired
- Aug 12, 2023, 2:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 17:55 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, 5.9 hours before the alert went out and 203 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.
- Mixed-layer CAPE
- 408 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
598
WUUS51 KPHI 121752
SVRPHI
NJC001-005-007-015-121830-
/O.NEW.KPHI.SV.W.0284.230812T1752Z-230812T1830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
152 PM EDT Sat Aug 12 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Atlantic County in southern New Jersey...
Southern Camden County in southern New Jersey...
East central Gloucester County in southern New Jersey...
Southwestern Burlington County in southern New Jersey...
* Until 230 PM EDT.
* At 151 PM EDT, a severe thunderstorm was located over Turnersville,
or 12 miles south of Gloucester City, moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Glassboro, Lindenwold, Hammonton, Clayton, Berlin, Shamong,
Chesilhurst, Atco, Sicklerville, Williamstown, Atsion, Marlton
Lakes, Turnersville, Monroe Township, Pine Hill, Clementon, Pine
Valley and Blackwood.
This includes Atlantic City Expressway between mile markers 33 and
44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3967 7510 3979 7512 3983 7468 3965 7466
TIME...MOT...LOC 1751Z 264DEG 15KT 3973 7503
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
052
WWUS51 KPHI 121817
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
217 PM EDT Sat Aug 12 2023
NJC001-015-121827-
/O.CAN.KPHI.SV.W.0284.000000T0000Z-230812T1830Z/
Atlantic NJ-Gloucester NJ-
217 PM EDT Sat Aug 12 2023
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ATLANTIC AND EAST
CENTRAL GLOUCESTER COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3973 7474 3970 7482 3970 7494 3971 7499
3980 7501 3981 7496 3983 7471 3973 7471
TIME...MOT...LOC 1817Z 264DEG 15KT 3974 7491
$$
NJC005-007-121830-
/O.CON.KPHI.SV.W.0284.000000T0000Z-230812T1830Z/
Camden NJ-Burlington NJ-
217 PM EDT Sat Aug 12 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR SOUTHEASTERN CAMDEN AND SOUTHWESTERN BURLINGTON COUNTIES...
At 217 PM EDT, a severe thunderstorm was located over Chesilhurst, or
15 miles southeast of Gloucester City, moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Lindenwold, Berlin, Chesilhurst, Atco, Sicklerville, Atsion, Marlton
Lakes, Pine Hill, Clementon and Pine Valley.
This includes Atlantic City Expressway between mile markers 37 and
39.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3973 7474 3970 7482 3970 7494 3971 7499
3980 7501 3981 7496 3983 7471 3973 7471
TIME...MOT...LOC 1817Z 264DEG 15KT 3974 7491
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich886
WWUS51 KPHI 121824
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
224 PM EDT Sat Aug 12 2023
NJC005-007-121834-
/O.EXP.KPHI.SV.W.0284.000000T0000Z-230812T1830Z/
Camden NJ-Burlington NJ-
224 PM EDT Sat Aug 12 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CAMDEN AND
SOUTHWESTERN BURLINGTON COUNTIES WILL EXPIRE AT 230 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3973 7474 3970 7482 3970 7494 3971 7499
3980 7501 3981 7496 3983 7471 3973 7471
TIME...MOT...LOC 1824Z 264DEG 15KT 3974 7487
$$
HoeflichThe 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, 1:45 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 25 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, 2023Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.