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 Oct 16, 2021, 4:18 PM EDT for 7 counties in New Jersey; Delaware County, Montgomery County, Philadelphia County, Pennsylvania; New Castle County, Delaware. It was in force for 57 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
- Oct 16, 2021, 4:18 PM EDT (20:18 UTC)
- Expired
- Oct 16, 2021, 5:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.00 in
- Wind
- 40
Counties New Castle County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Salem County, NJ, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 53 km from the middle of the area, began a volume at 20:20 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, 8.3 hours before the alert went out and 196 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
- 914 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
411
WWUS81 KPHI 162018
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
418 PM EDT Sat Oct 16 2021
DEZ001-002-MDZ015-NJZ012-013-015>025-027-PAZ070-071-102>104-106-
162115-
Kent DE-New Castle DE-Queen Anne's MD-Coastal Atlantic NJ-Salem NJ-
Camden NJ-Atlantic NJ-Mercer NJ-Southeastern Burlington NJ-
Northwestern Burlington NJ-Cumberland NJ-Ocean NJ-
Western Monmouth NJ-Middlesex NJ-Atlantic Coastal Cape May NJ-
Cape May NJ-Gloucester NJ-Lower Bucks PA-Eastern Montgomery PA-
Philadelphia PA-Western Montgomery PA-Delaware PA-Eastern Chester PA-
418 PM EDT Sat Oct 16 2021
...A gust front and an associated line of showers behind it will
impact portions of central New Castle, northern Kent, eastern Queen
Anne's, northwestern Ocean, Camden, Mercer, Atlantic, Cumberland,
Salem, Gloucester, northern Cape May, Burlington, central Monmouth,
southern Middlesex, southeastern Montgomery, southeastern Bucks,
east central Chester, Philadelphia and Delaware Counties through 515
PM EDT...
At 414 PM EDT, Doppler radar was tracking a gust front and an
associated line of showers behind it along a line extending from
Pennington to near Dover Base Housing. Movement was east at 40 mph.
HAZARD...Wind gusts up to 45 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Philadelphia, Trenton, Camden, Wilmington, Vineland, Dover,
Millville, Bridgeton, Middletown, Ocean City, Gloucester City,
Cumberland, Cherry Hill, Old Bridge, Bensalem, Jackson, East
Brunswick, Evesham, Mount Laurel and Marlboro.
This includes the following highways...
New Jersey Turnpike between exits 1 and 9.
Pennsylvania Turnpike between mile markers 324 and 359.
Northeast Extension between mile markers 21 and 29.
Interstate 95 in Pennsylvania between mile markers 0 and 40.
Interstate 95 in Delaware between mile markers 11 and 23.
Interstate 76 in Pennsylvania between mile markers 327 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 195 in New Jersey between mile markers 0 and 25.
Interstate 295 in New Jersey between mile markers 0 and 76.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 476 in Pennsylvania between mile markers 0 and 19.
Garden State Parkway between mile markers 21 and 52, and between
mile markers 116 and 119.
Atlantic City Expressway between mile markers 4 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3922 7456 3914 7581 4023 7541 4044 7416
TIME...MOT...LOC 2014Z 254DEG 36KT 4033 7482 3910 7544
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 16, 10:35 AM EDT | Coastal Flood Statement | PHI | Ocean | 2 hr |
| Oct 16, 3:22 PM EDT | Special Marine Warning | PHI | 113 min | |
| Oct 16, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 18 min |
| Oct 16, 3:41 PM EDT | Special Weather Statement | PHI | Hunterdon, Sussex, Warren | 49 min |
| Oct 16, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 43 min |
| Oct 16, 5:10 PM EDT | Special Marine Warning | PHI | 95 min | |
| Oct 16, 5:29 PM EDT | Special Marine Warning | PHI | 91 min | |
| Oct 16, 6:09 PM EDT | Special Marine Warning | PHI | 66 min | |
| Oct 16, 6:52 PM EDT | Coastal Flood Statement | PHI | Ocean | 4 hr |
| Oct 16, 1:39 PM EDT | Special Weather Statement | PHI | Berks | 51 min |
| Oct 16, 2:32 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 58 min |
| Oct 16, 2:44 PM EDT | Special Weather Statement | PHI | Chester | 61 min |
| Oct 16, 3:40 PM EDT | Special Weather Statement | PHI | New Castle | 50 min |
Nearby
Special Weather Statements in New Jersey, 2021Special Weather Statements in Pennsylvania, 2021Special Weather Statements in Delaware, 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.