Alert archive / New Jersey / Areal Flood Advisories in 2021
Areal Flood Advisory 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Apr 12, 2021, 1:12 AM EDT for Burlington County, Camden County, Gloucester County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Apr 12, 2021, 1:12 AM EDT (05:12 UTC)
- Expired
- Apr 12, 2021, 2:19 AM EDT
- In force
- 67 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 05:15 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
Brookhaven, NY (KOKX), launched 00:00Z, 5.2 hours before the alert went out and 219 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
- 6 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 434 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
919
WGUS81 KPHI 120512
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
112 AM EDT Mon Apr 12 2021
NJC005-007-015-PAC101-120645-
/O.NEW.KPHI.FA.Y.0009.210412T0512Z-210412T0645Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
112 AM EDT Mon Apr 12 2021
The National Weather Service in Mount Holly has issued a
* Urban and Small Stream Flood Advisory for...
West Central Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
North Central Gloucester County in southern New Jersey...
Central Philadelphia County in southeastern Pennsylvania...
* Until 245 AM EDT.
* At 112 AM EDT, Doppler radar and automated rain gauges indicated
heavy rain due to thunderstorms. This will cause urban and small
stream flooding. Up to 1 inch of rain has fallen.
* Some locations that will experience flooding include...
Camden, Gloucester City, Cherry Hill, Deptford, West Deptford,
Bellmawr, Woodbury, Riverside, Palmyra, Paulsboro, and Magnolia.
This includes the following highways...
New Jersey Turnpike between exits 3 and 4.
Interstate 95 in Pennsylvania between mile markers 15 and 31.
Interstate 76 in Pennsylvania between mile markers 350 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 20 and 37.
Interstate 676 in New Jersey between mile markers 0 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3987 7522 3995 7515 4004 7507 4004 7499
4003 7490 3993 7495 3987 7500 3980 7510
3981 7519 3982 7522 3986 7523 3986 7522
3987 7521
$$
Deal1 follow-up statement
992
WGUS81 KPHI 120619
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
219 AM EDT Mon Apr 12 2021
NJC005-007-015-PAC101-120629-
/O.CAN.KPHI.FA.Y.0009.000000T0000Z-210412T0645Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
219 AM EDT Mon Apr 12 2021
...THE URBAN AND SMALL STREAM FLOOD ADVISORY IS CANCELLED FOR WEST
CENTRAL BURLINGTON, NORTHWESTERN CAMDEN, NORTH CENTRAL GLOUCESTER,
AND CENTRAL PHILADELPHIA COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3987 7522 3995 7515 4004 7507 4004 7499
4003 7490 3993 7495 3987 7500 3980 7510
3981 7519 3982 7522 3986 7523 3986 7522
3987 7521
$$
DealNearby
Areal Flood Advisories in New Jersey, 2021Areal Flood Advisories in Pennsylvania, 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.