Alert archive / New Jersey / Areal Flood Warnings in 2021
Areal Flood Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 2, 2021, 1:20 PM EDT for Middlesex County, New Jersey. It was in force for 21 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 2, 2021, 1:20 PM EDT (17:20 UTC)
- Expired
- Sep 3, 2021, 10:30 AM EDT
- In force
- 21 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Middlesex County, NJ
The radar
The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 17:22 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, 5.3 hours before the alert went out and 137 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 548 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -97 m²/s²
- 0-3 km storm-relative helicity
- -86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
633 WGUS41 KPHI 021720 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 120 PM EDT Thu Sep 2 2021 NJC023-022130- /O.NEW.KPHI.FA.W.0046.210902T1720Z-210902T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex NJ- 120 PM EDT Thu Sep 2 2021 The National Weather Service in Mount Holly has issued a * Flood Warning for... Central Middlesex County in northern New Jersey... * Until 530 PM EDT. * At 120 PM EDT, gauge reports indicated flooding was ongoing. * For Manalapan Brook at Spotswood: At 12:15pm the stage was 19.06 feet. Flood Stage is 19 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4049 7434 4040 7428 4029 7442 4040 7450 $$ Kruzdlo
3 follow-up statements
658 WGUS41 KPHI 022105 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 505 PM EDT Thu Sep 2 2021 NJC023-030330- /O.EXT.KPHI.FA.W.0046.000000T0000Z-210903T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex NJ- 505 PM EDT Thu Sep 2 2021 The National Weather Service in Mount Holly has extended the * Flood Warning for... Central Middlesex County in northern New Jersey... * Until 1130 PM EDT Thursday. * At 505 PM EDT, gauge reports indicated flooding was ongoing. * For Manalapan Brook at Spotswood: At 4:15pm the stage was 19.21 feet. Flood Stage is 19 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4049 7434 4040 7428 4029 7442 4040 7450 $$ Kruzdlo
517 WGUS41 KPHI 030259 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 1059 PM EDT Thu Sep 2 2021 NJC023-030930- /O.EXT.KPHI.FA.W.0046.000000T0000Z-210903T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex NJ- 1059 PM EDT Thu Sep 2 2021 The National Weather Service in Mount Holly has extended the * Flood Warning for... Central Middlesex County in northern New Jersey... * Until 530 AM EDT Friday. * At 1059 PM EDT, gauge reports indicated flooding is ongoing. * For Manalapan Brook at Spotswood: At 10:15pm the stage was 19.28 feet. Flood Stage is 19 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4049 7434 4040 7428 4029 7442 4040 7450 $$ Meola
240 WGUS41 KPHI 030854 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 454 AM EDT Fri Sep 3 2021 NJC023-031430- /O.EXT.KPHI.FA.W.0046.000000T0000Z-210903T1430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex NJ- 454 AM EDT Fri Sep 3 2021 The National Weather Service in Mount Holly has extended the * Flood Warning for... Central Middlesex County in northern New Jersey... * Until 1030 AM EDT. * At 454 AM EDT, gauge reports indicated flooding is ongoing. * For Manalapan Brook at Spotswood: At 4:15am the stage was 19.14 feet. Flood Stage is 19 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 4049 7434 4040 7428 4029 7442 4040 7450 $$ Meola
The 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, 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.