Alert archive / New Jersey / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Apr 10, 2021, 4:42 AM EDT for Gloucester County, New Jersey. It was in force for 48 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
- Apr 10, 2021, 4:42 AM EDT (08:42 UTC)
- Expired
- Apr 10, 2021, 5:30 AM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
County Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 08:42 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 00:00Z, 8.7 hours before the alert went out and 209 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
- 1 J/kg
- Mixed-layer CIN
- -256 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
341
WWUS81 KPHI 100842
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
442 AM EDT Sat Apr 10 2021
NJZ017-100930-
Gloucester-
442 AM EDT Sat Apr 10 2021
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN GLOUCESTER
COUNTY...
At 442 AM EDT, a strong thunderstorm was located over Gibbstown, or 9
miles southwest of Gloucester City, moving east at 10 mph.
Wind gusts up to 30 mph and pea size hail are possible with this
storm.
Locations impacted include...
Deptford, West Deptford, Bellmawr, Woodbury, Pitman, Paulsboro,
Westville, Woodbury Heights, National Park, Swedesboro, Brooklawn,
Mullica Hill, Gibbstown, Turnersville, Wenonah, Oak Valley and
Blackwood.
This includes the following highways...
New Jersey Turnpike near exit 2.
Interstate 295 in New Jersey between mile markers 14 and 25.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3972 7529 3980 7533 3988 7518 3989 7514
3985 7510 3981 7509 3980 7507 3978 7509
3979 7506 3975 7504
TIME...MOT...LOC 0842Z 247DEG 9KT 3979 7525
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 3:22 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 2 hr |
| Apr 10, 3:44 AM EDT | Special Weather Statement | PHI | Gloucester | 46 min |
| Apr 10, 4:00 PM EDT | Small Craft Advisory | PHI | 3 days | |
| Apr 10, 1:19 AM EDT | Special Weather Statement | PHI | Chester | 56 min |
| Apr 10, 2:34 AM EDT | Special Weather Statement | PHI | Chester | 41 min |
| Apr 10, 2:35 AM EDT | Special Weather Statement | PHI | Delaware | 40 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.