Alert archive / New Jersey / Areal Flood Warnings in 2021
Areal Flood Warning 62, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 26, 2021, 9:24 PM EDT for Somerset County, New Jersey. It was in force for 2 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
- Oct 26, 2021, 9:24 PM EDT (01:24 UTC)
- Expired
- Oct 26, 2021, 11:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 01:25 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, 1.4 hours before the alert went out and 157 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
- 3 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 482 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
102 WGUS41 KPHI 270124 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 924 PM EDT Tue Oct 26 2021 NJC035-271200- /O.NEW.KPHI.FA.W.0062.211027T0124Z-211027T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Somerset NJ- 924 PM EDT Tue Oct 26 2021 The National Weather Service in Mount Holly has issued a * Flood Warning for... Western Somerset County in northern New Jersey... * Until 800 AM EDT Wednesday. * At 924 PM EDT, Minor flooding was occurring along the North Branch of the Raritan River near its confluence with the South Branch along the border between Branchburg Township and Bridgewater Township. The minor flooding is expected to continue overnight, with that segment of the river returning within its banks on Wednesday morning. * Some locations that may experience flooding include... Branchburg Township and Bridgewater Township PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4057 7467 4055 7468 4055 7469 4057 7469 $$ Iovino
1 follow-up statement
465 WGUS81 KPHI 270330 FLSPHI Flood Statement National Weather Service Mount Holly NJ 1130 PM EDT Tue Oct 26 2021 NJC035-270340- /O.CAN.KPHI.FA.W.0062.000000T0000Z-211027T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Somerset NJ- 1130 PM EDT Tue Oct 26 2021 ...FLOOD WARNING IS CANCELLED FOR WESTERN SOMERSET COUNTY... Flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 4057 7467 4055 7468 4055 7469 4057 7469 $$ SFJ
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 8:18 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean | 21 hr |
| Oct 26, 11:23 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Ocean | 5 hr |
| Oct 27, 12:12 AM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 5 days |
| Oct 27, 2:59 AM EDT | Areal Flood Warning | PHI | Sussex, Warren | 11 hr |
| Oct 27, 4:26 AM EDT | River Flood Warning | PHI | Sussex, Warren | 26 hr |
| Oct 27, 4:26 AM EDT | River Flood Warning | PHI | Hunterdon, Warren | 38 hr |
| Oct 27, 9:55 AM EDT | River Flood Warning | PHI | Hunterdon, Mercer | 29 hr |
| Oct 27, 11:54 AM EDT | Small Craft Advisory | PHI | 42 hr | |
| Oct 27, 5:08 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 34 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.