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, 3:44 AM EDT for Gloucester County, New Jersey. It was in force for 46 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, 3:44 AM EDT (07:44 UTC)
- Expired
- Apr 10, 2021, 4:30 AM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
County Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 81 km from the middle of the area, began a volume at 07:47 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 7.7 hours before the alert went out and 199 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 238 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
664 WWUS81 KPHI 100744 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 344 AM EDT Sat Apr 10 2021 DEZ001-NJZ016-017-PAZ070-071-100830- New Castle-Salem-Gloucester-Delaware-Philadelphia- 344 AM EDT Sat Apr 10 2021 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN NEW CASTLE... NORTHWESTERN SALEM...NORTHWESTERN GLOUCESTER...SOUTHWESTERN PHILADELPHIA AND SOUTHEASTERN DELAWARE COUNTIES... At 344 AM EDT, a strong thunderstorm was located over Beckett, or 7 miles east of Wilmington, moving northeast at 15 mph. Wind gusts up to 30 mph and pea size hail are possible with this storm. Locations impacted include... Philadelphia, Wilmington, Chester, Deptford, West Deptford, Glassboro, Yeadon, Woodbury, Pitman, Carneys Point, Folcroft, Paulsboro, Penns Grove, Woodstown, Woodbury Heights, National Park, Swedesboro, Darby Township, Chester Township and Mullica Hill. This includes the following highways... New Jersey Turnpike between exits 1 and 2. Interstate 95 in Pennsylvania between mile markers 0 and 16. Interstate 95 in Delaware between mile markers 18 and 23. Interstate 76 in Pennsylvania between mile markers 346 and 349. Interstate 295 in New Jersey between mile markers 4 and 24. Interstate 476 in Pennsylvania near mile marker 0. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. LAT...LON 3963 7542 3979 7552 3996 7520 3972 7505 TIME...MOT...LOC 0744Z 243DEG 15KT 3975 7539 $$ MPS
The 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, 4:42 AM EDT | Special Weather Statement | PHI | Gloucester | 48 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.