Alert archive / New Jersey / Areal Flood Advisories in 2021
Areal Flood Advisory 77, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 12, 2021, 9:53 PM EDT for Sussex County, Warren County, New Jersey. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2021, 9:53 PM EDT (01:53 UTC)
- Expired
- Jul 13, 2021, 12:34 AM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 130 km from the middle of the area, began a volume at 01:54 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, 1.9 hours before the alert went out and 164 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
- 196 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted.
236
WGUS81 KPHI 130153
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
953 PM EDT Mon Jul 12 2021
NJC037-041-130500-
/O.NEW.KPHI.FA.Y.0077.210713T0153Z-210713T0500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
953 PM EDT Mon Jul 12 2021
The National Weather Service in Mount Holly has issued a
* Flood Advisory for...
Sussex County in northwestern New Jersey...
Northeastern Warren County in northwestern New Jersey...
* Until 100 AM EDT.
* At 953 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 4 inches of rain have
already fallen with an additional inch possible.
* Some locations that may experience flooding include...
Newton, Montague, Hopatcong, Hackettstown, Mount Arlington,
Franklin, Stanhope, Hamburg, Netcong, Ogdensburg, Sussex, and
Branchville.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 16 and 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4109 7497 4109 7499 4111 7498 4114 7492
4118 7488 4124 7486 4129 7483 4135 7475
4136 7469 4120 7437 4097 7464 4095 7463
4092 7465 4090 7471 4092 7473 4091 7477
4088 7481 4086 7481 4105 7503
$$
Iovino1 follow-up statement
041
WGUS81 KPHI 130434
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
1234 AM EDT Tue Jul 13 2021
NJC037-041-130444-
/O.CAN.KPHI.FA.Y.0077.000000T0000Z-210713T0500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
1234 AM EDT Tue Jul 13 2021
...FLOOD ADVISORY IS CANCELLED FOR SUSSEX AND NORTHEASTERN WARREN
COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4109 7497 4109 7499 4111 7498 4114 7492
4118 7488 4124 7486 4129 7483 4135 7475
4136 7469 4120 7437 4097 7464 4095 7463
4092 7465 4090 7471 4092 7473 4091 7477
4088 7481 4086 7481 4105 7503
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 8:37 PM EDT | Areal Flood Warning | PHI | Burlington | 9 hr |
| Jul 12, 10:34 PM EDT | Areal Flood Advisory | PHI | Morris | 3 hr |
| Jul 13, 8:09 AM EDT | Marine Dense Fog Advisory | PHI | 25 hr | |
| Jul 13, 3:44 PM EDT | Dense Fog Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 4 more | 14 hr |
Nearby
Areal Flood Advisories in New Jersey, 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.