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, 7:14 PM EDT for Gloucester County, New Jersey; Delaware County, Pennsylvania. It was in force for 46 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
- Sep 28, 2021, 7:14 PM EDT (23:14 UTC)
- Expired
- Sep 28, 2021, 8:00 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 30
Counties Gloucester County, NJ, Delaware County, PA
The radar
The Philadelphia radar (KDIX), 81 km from the middle of the area, began a volume at 23:16 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 |
|---|---|---|---|
| Sep 28, 7:32 PM EDT | TSTM WND DMG | Upper Chichester Twp, PA | SHINGLES BLOWN OFF A ROOF AND MINOR TREE DAMAGE IN UPPER CHICHESTER TOWNSHIP. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.2 hours before the alert went out and 201 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
- 35 J/kg
- Mixed-layer CIN
- -322 J/kg
- Mixed-layer LCL
- 1669 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
512
WWUS81 KPHI 282314
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
714 PM EDT Tue Sep 28 2021
NJZ017-PAZ070-071-102-290000-
Gloucester NJ-Delaware PA-Eastern Chester PA-Philadelphia PA-
714 PM EDT Tue Sep 28 2021
...A strong thunderstorm will impact portions of northwestern
Gloucester, east central Chester, southwestern Philadelphia and
Delaware Counties through 800 PM EDT...
At 713 PM EDT, Doppler radar was tracking a strong thunderstorm over
Gradyville, or near West Chester, moving southeast at 30 mph.
HAZARD...Pea size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to outdoor objects is possible.
Locations impacted include...
Philadelphia, West Chester, Gloucester City, Chester, Deptford, West
Deptford, Bellmawr, Yeadon, Westtown, Woodbury, Pitman, Folcroft,
Swarthmore, Paulsboro, Westville, Woodbury Heights, National Park,
East Lansdowne, Swedesboro and Brooklawn.
This includes the following highways...
New Jersey Turnpike near exit 2.
Pennsylvania Turnpike near mile marker 321.
Interstate 95 in Pennsylvania between mile markers 0 and 18.
Interstate 76 in Pennsylvania between mile markers 347 and 350.
Interstate 295 in New Jersey between mile markers 9 and 25.
Interstate 476 in Pennsylvania between mile markers 0 and 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3994 7566 4008 7551 3990 7513 3987 7512
3984 7509 3979 7507 3966 7521 3966 7523
3968 7525 3969 7532 3973 7538 3978 7540
3978 7544 3979 7541 3981 7542 3983 7552
TIME...MOT...LOC 2313Z 308DEG 24KT 3997 7551
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<30 MPH
$$
POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 8:26 AM EDT | Areal Flood Advisory | PHI | Warren | 2 hr |
| Sep 28, 7:29 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 31 min |
| Sep 28, 9:23 AM EDT | Special Weather Statement | PHI | Montgomery | 37 min |
| Sep 28, 9:47 AM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 28 min |
| Sep 28, 6:15 PM EDT | Special Weather Statement | PHI | Chester | 45 min |
Nearby
Special Weather Statements in New Jersey, 2021Special Weather Statements in Pennsylvania, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.