Alert archive / New Jersey / Areal Flood Warnings in 2021
Areal Flood Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 2, 2021, 1:38 AM EDT for 5 counties in New Jersey. It was in force for 4 hr. 2 reports 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, 1:38 AM EDT (05:38 UTC)
- Expired
- Sep 2, 2021, 5:45 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 05:40 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, 2:00 AM EDT | FLASH FLOOD | 2 Ene North Princeton, NJ | KINGSTON ROAD CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 5:07 AM EDT | COASTAL FLOOD | 1 N Deal, NJ | STATE HIGHWAY 71 CLOSED FROM TIDAL AND FRESHWATER FLOODING BETWEEN BRIGHTON AVENUE AND ROOSEVELT AVENUE. TIME BASED ON DISPATCH REPORT. |
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, 5.6 hours before the alert went out and 139 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.
715
WGUS41 KPHI 020538
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
138 AM EDT Thu Sep 2 2021
NJC005-021-023-025-029-020945-
/O.NEW.KPHI.FA.W.0038.210902T0538Z-210902T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Middlesex NJ-Monmouth NJ-Ocean NJ-
138 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...
Monmouth County in central New Jersey...
Southeastern Middlesex County in northern New Jersey...
Northeastern Burlington County in southern New Jersey...
Northern Ocean County in southern New Jersey...
* Until 545 AM EDT.
* At 138 AM EDT, local law enforcement reported flooding in the
warned area. Several roads remain closed in northern Monmouth
County, especially in Keyport, Middletown, and Hazlet Township.
Between 1 and 4 inches of rain have fallen. Flooding will likely
continue for a few more hours.
* Some locations that may experience flooding include...
Long Branch, Asbury Park, Sandy Hook, Lakewood, Middletown, Old
Bridge, Jackson, Howell, East Brunswick, South Brunswick,
Marlboro, and Manalapan.
This includes the following highways...
New Jersey Turnpike between exits 7 and 9.
Interstate 295 in New Jersey between mile markers 53 and 59...and
near mile marker 63.
Interstate 195 in New Jersey between mile markers 1 and 34.
Garden State Parkway between mile markers 97 and 121.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4015 7472 4016 7472 4039 7463 4038 7462
4040 7459 4040 7428 4046 7425 4044 7421
4046 7414 4042 7406 4040 7398 4048 7401
4042 7396 4022 7396 4003 7433 4008 7476
$$
CMS1 follow-up statement
647
WGUS81 KPHI 020941
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
541 AM EDT Thu Sep 2 2021
NJC005-021-023-025-029-020951-
/O.EXP.KPHI.FA.W.0038.000000T0000Z-210902T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Middlesex NJ-Monmouth NJ-Ocean NJ-
541 AM EDT Thu Sep 2 2021
...FLOOD WARNING WILL EXPIRE AT 545 AM EDT EARLY THIS MORNING FOR
EASTERN MERCER, MONMOUTH, SOUTHEASTERN MIDDLESEX, NORTHEASTERN
BURLINGTON, AND NORTHERN OCEAN COUNTIES...
The heavy rain has ended. The flood warning will be allowed o expire.
LAT...LON 4015 7472 4016 7472 4039 7463 4038 7462
4040 7459 4040 7428 4046 7425 4044 7421
4046 7414 4042 7406 4040 7398 4048 7401
4042 7396 4022 7396 4003 7433 4008 7476
$$
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, 1:52 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, 3:53 AM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 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.