Alert archive / New Jersey / Areal Flood Warnings in 2021
Areal Flood Warning 45, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 2, 2021, 3:53 AM EDT for 5 counties in New Jersey. It was in force for 8 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 2, 2021, 3:53 AM EDT (07:53 UTC)
- Expired
- Sep 2, 2021, 12:19 PM EDT
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 07:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 4:00 AM EDT | FLOOD | 2 Ene Somerset, NJ | EASTON AVE UNDER A FEW FEET OF WATER WITH ABANDONED AND FLOODED VEHICLES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 7.9 hours before the alert went out and 142 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
- 123 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
617
WGUS41 KPHI 020753
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
353 AM EDT Thu Sep 2 2021
NJC019-021-023-027-035-021700-
/O.NEW.KPHI.FA.W.0045.210902T0753Z-210902T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Mercer NJ-Middlesex NJ-Morris NJ-Somerset NJ-
353 AM EDT Thu Sep 2 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for...
Eastern Mercer County in central New Jersey...
Middlesex County in northern New Jersey...
Southeastern Morris County in northern New Jersey...
Somerset County in northern New Jersey...
East Central Hunterdon County in northwestern New Jersey...
* Until 100 PM EDT Thursday.
* At 353 AM EDT, local law enforcement reported widespread flooding
continuing across the warning area. Many roads are closed, and
several rivers and streams are in flood. Flooding will continue
for several more hours. Please heed road closures!
* Some locations that may experience flooding include...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old
Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, and Carteret.
This includes the following highways...
New Jersey Turnpike between exits 8 and 13.
Interstate 78 in New Jersey between mile markers 26 and 42.
Interstate 295 in New Jersey between mile markers 61 and 68.
Interstate 195 in New Jersey between mile markers 1 and 8.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 121 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4050 7426 4049 7429 4045 7422 4041 7425
4028 7440 4025 7449 4019 7456 4018 7461
4014 7459 4018 7470 4015 7472
$$
CMS1 follow-up statement
614
WGUS81 KPHI 021619
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
1219 PM EDT Thu Sep 2 2021
NJC019-021-023-027-035-021629-
/O.CAN.KPHI.FA.W.0045.000000T0000Z-210902T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Mercer NJ-Middlesex NJ-Morris NJ-Somerset NJ-
1219 PM EDT Thu Sep 2 2021
...FLOOD WARNING IS CANCELLED FOR EASTERN MERCER, MIDDLESEX,
SOUTHEASTERN MORRIS, SOMERSET, AND EAST CENTRAL HUNTERDON COUNTIES...
This flood warning has been cancelled. Additional flood warnings
remain in place across the region.
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4050 7426 4049 7429 4045 7422 4041 7425
4028 7440 4025 7449 4019 7456 4018 7461
4014 7459 4018 7470 4015 7472
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:02 PM EDT | Flash Flood Warning | PHI | Middlesex, Morris, Somerset | 5 hr |
| Sep 1, 9:01 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 5 hr |
| Sep 1, 9:43 PM EDT | River Flood Warning | PHI | Mercer | 33 hr |
| Sep 1, 10:05 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 4 hr |
| Sep 1, 10:23 PM EDT | Coastal Flood Statement | PHI | Ocean | 13 hr |
| Sep 1, 10:24 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Sep 1, 10:29 PM EDT | River Flood Warning | PHI | Hunterdon, Mercer | 49 hr |
| Sep 1, 10:32 PM EDT | River Flood Warning | PHI | Mercer | 31 hr |
| Sep 1, 10:35 PM EDT | River Flood Warning | PHI | Bergen, Morris, Passaic | 30 hr |
| Sep 1, 10:37 PM EDT | River Flood Warning | PHI | Morris, Passaic | 41 hr |
| Sep 1, 10:38 PM EDT | River Flood Warning | PHI | Morris, Somerset | 21 days |
| Sep 1, 10:47 PM EDT | Areal Flood Warning | PHI | Warren | 23 hr |
| Sep 1, 10:52 PM EDT | Areal Flood Warning | PHI | Hunterdon, Warren | 12 hr |
| Sep 2, 12:01 AM EDT | Areal Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 40 hr |
| Sep 2, 12:28 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester | 3 hr |
| Sep 2, 12:31 AM EDT | Areal Flood Advisory | PHI | Monmouth, Ocean | 2 hr |
| Sep 2, 1:38 AM EDT | Areal Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 4 hr |
| Sep 2, 1:52 AM EDT | Areal Flood Warning | PHI | Morris, Somerset | 13 hr |
| Sep 2, 2:23 AM EDT | Areal Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 9 hr |
| Sep 2, 2:29 AM EDT | Areal Flood Warning | PHI | Burlington, Camden, Gloucester | 5 hr |
| Sep 2, 3:52 AM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Morris, Somerset, Warren | 8 hr |
| Sep 2, 4:00 AM EDT | River Flood Warning | PHI | Morris | 48 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Hunterdon, Mercer | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Hunterdon, Warren | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Hunterdon | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Hunterdon | 33 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Hunterdon, Mercer | 34 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Sussex, Warren | 5 hr |
| Sep 2, 6:05 AM EDT | Coastal Flood Warning | PHI | Burlington, Camden, Gloucester, Mercer | 6 hr |
| Sep 2, 1:20 PM EDT | Areal Flood Warning | PHI | Middlesex | 21 hr |
| Sep 2, 6:44 PM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester | 7 hr |
Nearby
Areal Flood Warnings in New Jersey, 2021Every areal flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.