Alert archive / New Jersey / Areal Flood Advisories in 2021
Areal Flood Advisory 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Mar 31, 2021, 3:50 PM EDT for New Castle County, Delaware; 5 counties in New Jersey. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2021, 3:50 PM EDT (19:50 UTC)
- Expired
- Mar 31, 2021, 6:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 19:53 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 12:00Z, 7.8 hours before the alert went out and 204 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
- 774 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
566
WGUS81 KPHI 311950
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
350 PM EDT Wed Mar 31 2021
DEC003-NJC005-007-011-015-033-312245-
/O.NEW.KPHI.FA.Y.0007.210331T1950Z-210331T2245Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Burlington NJ-Camden NJ-Cumberland NJ-Gloucester NJ-
Salem NJ-
350 PM EDT Wed Mar 31 2021
The National Weather Service in Mount Holly has issued a
* Flood Advisory for...
New Castle County in northern Delaware...
West Central Burlington County in southern New Jersey...
Camden County in southern New Jersey...
Northwestern Cumberland County in southern New Jersey...
Gloucester County in southern New Jersey...
Salem County in southern New Jersey...
* Until 645 PM EDT.
* At 350 PM EDT, Doppler radar and automated rain gauges indicated
heavy rain. Minor flooding is ongoing or expected to begin shortly
in the advisory area. Between 0.5 and 0.75 inches of rain have
fallen with another .50 to 1.0 inches of rain possible over the
next few hours.
Some locations that may experience flooding include...
Camden, Wilmington, Vineland, Newark, Middletown, Gloucester City,
Cherry Hill, Evesham, Mount Laurel, Willingboro, Deptford, and
Voorhees.
This includes the following highways...
New Jersey Turnpike between exits 1 and 4.
Interstate 95 in Delaware between mile markers 0 and 21.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 0 and 45.
Interstate 676 in New Jersey between mile markers 0 and 1.
Atlantic City Expressway between mile markers 34 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Advisory means river or stream flows are elevated, or
ponding of water in urban or other areas is occurring or is imminent.
&&
LAT...LON 3981 7568 3979 7542 3981 7526 3988 7515
4004 7494 3997 7473 3992 7463 3951 7506
3932 7576 3972 7579
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 3:46 PM EDT | Freeze Watch | PHI | Kent, Sussex | 11 hr |
| Mar 31, 3:28 AM EDT | Gale Warning | PHI | 33 hr |
Nearby
Areal Flood Advisories in New Jersey, 2021Areal Flood Advisories in Delaware, 2021Every areal flood advisory 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.