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 Sep 28, 2021, 8:00 PM EDT for Gloucester County, Salem County, New Jersey. It was in force for 45 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
- Sep 28, 2021, 8:00 PM EDT (00:00 UTC)
- Expired
- Sep 28, 2021, 8:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 30
Counties Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 00:01 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, 0.0 hours before the alert went out and 191 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
- 1162 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 1324 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
059 WWUS81 KPHI 290000 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 800 PM EDT Tue Sep 28 2021 DEZ001-NJZ016-017-021-290045- New Castle DE-Salem NJ-Cumberland NJ-Gloucester NJ- 800 PM EDT Tue Sep 28 2021 ...A strong thunderstorm will impact portions of northeastern New Castle, northwestern Cumberland, Salem and Gloucester Counties through 845 PM EDT... At 759 PM EDT, Doppler radar was tracking a strong thunderstorm over Beckett, or 9 miles east of Wilmington, moving southeast at 25 mph. HAZARD...Pea size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Locations impacted include... Wilmington, Vineland, Bridgeton, Deptford, West Deptford, Glassboro, Pennsville, Woodbury, Pitman, Clayton, Carneys Point, Paulsboro, New Castle, Penns Grove, Salem, Woodstown, Alloway, Woodbury Heights, National Park and Quinton. This includes the following highways... New Jersey Turnpike between exits 1 and 2. Interstate 295 in New Jersey between mile markers 0 and 23. PRECAUTIONARY/PREPAREDNESS ACTIONS... If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3969 7560 3988 7518 3961 7492 3937 7527 TIME...MOT...LOC 2359Z 323DEG 23KT 3974 7534 MAX HAIL SIZE...0.25 IN MAX WIND GUST...<30 MPH $$ PO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 8:55 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 50 min |
| Sep 28, 9:25 PM EDT | Special Weather Statement | PHI | Cape May | 35 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.