Alert archive / New Jersey / Areal Flood Advisories in 2021
Areal Flood Advisory 71, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 12, 2021, 5:08 PM EDT for Sussex County, New Jersey. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2021, 5:08 PM EDT (21:08 UTC)
- Expired
- Jul 12, 2021, 9:44 PM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 21:11 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 12:00Z, 9.1 hours before the alert went out and 162 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
- 857 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 697 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
The text
As transmitted.
150
WGUS81 KPHI 122108
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
508 PM EDT Mon Jul 12 2021
NJC037-130100-
/O.NEW.KPHI.FA.Y.0071.210712T2108Z-210713T0100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-
508 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...
* Until 900 PM EDT.
* At 508 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 0.5 and 1 inch of rain has
already fallen in spots with an additional 1 to 2 inches possible.
* Some locations that may experience flooding include...
Newton, Montague, Hopatcong, Mount Arlington, Franklin, Stanhope,
Hamburg, Netcong, Ogdensburg, Sussex, Branchville, and Andover.
This includes the following highways...
Interstate 80 in New Jersey near mile marker 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4120 7437 4097 7464 4095 7463 4092 7465
4090 7471 4092 7473 4091 7477 4109 7496
4109 7499 4111 7498 4114 7492 4118 7488
4122 7486 4123 7487 4125 7486 4131 7479
4132 7479 4133 7477 4135 7475 4136 7469
$$
Iovino3 follow-up statements
697
WGUS81 KPHI 130010
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
810 PM EDT Mon Jul 12 2021
NJC037-130100-
/O.CON.KPHI.FA.Y.0071.000000T0000Z-210713T0100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-
810 PM EDT Mon Jul 12 2021
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR
WESTERN AND NORTHERN SUSSEX COUNTY...
At 810 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 3 inches of rain have
fallen with another inch possible.
Some locations that may experience flooding include...
Montague, Sussex, Branchville, Hainesville, Pellettown, Crandon
Lakes, Five Points, High Point, and Flatbrookville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4126 7451 4100 7487 4109 7496 4110 7497
4109 7499 4111 7498 4114 7492 4118 7488
4122 7486 4123 7487 4125 7486 4131 7479
4132 7479 4133 7477 4135 7475 4136 7469
$$
Iovino192
WGUS81 KPHI 130030
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
830 PM EDT Mon Jul 12 2021
NJC037-130300-
/O.EXT.KPHI.FA.Y.0071.000000T0000Z-210713T0300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-
830 PM EDT Mon Jul 12 2021
The National Weather Service in Mount Holly has extended the
* Flood Advisory for...
Central Sussex County in northwestern New Jersey...
* Until 1100 PM EDT.
* At 830 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 2 and 4 inches of rain have
already fallen with another inch possible.
* Some locations that may experience flooding include...
Montague, Sussex, Branchville, Hainesville, Pellettown, Crandon
Lakes, Five Points, High Point, and Flatbrookville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4126 7451 4100 7487 4109 7496 4110 7497
4109 7499 4111 7498 4114 7492 4118 7488
4122 7486 4123 7487 4125 7486 4131 7479
4132 7479 4133 7477 4135 7475 4136 7469
$$
Iovino210
WGUS81 KPHI 130144
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
944 PM EDT Mon Jul 12 2021
NJC037-130154-
/O.CAN.KPHI.FA.Y.0071.000000T0000Z-210713T0300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-
944 PM EDT Mon Jul 12 2021
...FLOOD ADVISORY IS CANCELLED FOR WESTERN AND NORTHERN SUSSEX
COUNTY...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4126 7451 4100 7487 4109 7496 4110 7497
4109 7499 4111 7498 4114 7492 4118 7488
4122 7486 4123 7487 4125 7486 4131 7479
4132 7479 4133 7477 4135 7475 4136 7469
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:59 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 3 hr |
| Jul 12, 2:12 PM EDT | Flash Flood Warning | PHI | Burlington | 7 hr |
| Jul 12, 2:20 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Monmouth | 3 hr |
| Jul 12, 2:37 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth | 93 min |
| Jul 12, 3:08 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 67 min |
| Jul 12, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 41 min |
| Jul 12, 4:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 12, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 42 min |
| Jul 12, 4:52 PM EDT | Areal Flood Advisory | PHI | Monmouth, Ocean | 98 min |
| Jul 12, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer | 67 min |
| Jul 12, 5:26 PM EDT | Areal Flood Advisory | PHI | Camden | 2 hr |
| Jul 12, 5:36 PM EDT | Special Weather Statement | PHI | Sussex | 24 min |
| Jul 12, 5:41 PM EDT | Areal Flood Advisory | PHI | Burlington | 83 min |
| Jul 12, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 63 min |
| Jul 12, 6:01 PM EDT | Flash Flood Warning | PHI | Camden | 102 min |
| Jul 12, 6:08 PM EDT | Areal Flood Advisory | PHI | Morris | 98 min |
| Jul 12, 6:43 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 93 min |
| Jul 12, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 34 min |
| Jul 12, 7:00 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 112 min |
| Jul 12, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 69 min |
| Jul 12, 7:11 PM EDT | Flash Flood Warning | PHI | Morris, Sussex | 35 min |
| Jul 12, 7:33 PM EDT | Special Marine Warning | PHI | 58 min |
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.