Alert archive / New Jersey / Areal Flood Warnings in 2021

Areal Flood Warning 63, NWS Philadelphia/Mount Holly

October 27, 2021Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 27, 2021, 2:59 AM EDT for Sussex County, Warren County, New Jersey. It was in force for 11 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 27, 2021, 2:59 AM EDT (06:59 UTC)
Expired
Oct 27, 2021, 2:00 PM EDT
In force
11 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 116 km from the middle of the area, began a volume at 07:02 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, 7.0 hours before the alert went out and 177 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2021-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -56 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted.

883 
WGUS41 KPHI 270659
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
259 AM EDT Wed Oct 27 2021

NJC037-041-271300-
/O.NEW.KPHI.FA.W.0063.211027T0659Z-211027T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
259 AM EDT Wed Oct 27 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for...
  South Central Sussex County in northwestern New Jersey...
  Central Warren County in northwestern New Jersey...

* Until 900 AM EDT Wednesday.

* At 259 AM EDT, Minor flooding was occurring along streams and 
  creeks in the region, including the Pequest River near Huntsville. 
  The flooding was due to the heavy rain Monday night and Tuesday. 
  Flooding is already occurring in the warned area. Minor flooding 
  is expected to continue through at least mid morning Wednesday.

* Some locations that may experience flooding include...
  Belvidere, Oxford, Hope, Andover, Great Meadows-Vienna, 
  Allamuchy-Panther Valley, and Greendell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 4104 7478 4100 7471 4080 7498 4082 7508
      4084 7509 4085 7508 4085 7507 4086 7505
      4087 7505

$$

SFJ
2 follow-up statements
594 
WGUS41 KPHI 271246
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
846 AM EDT Wed Oct 27 2021

NJC037-041-271800-
/O.EXT.KPHI.FA.W.0063.000000T0000Z-211027T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
846 AM EDT Wed Oct 27 2021

The National Weather Service in Mount Holly has extended the

* Flood Warning for...
  South Central Sussex County in northwestern New Jersey...
  Central Warren County in northwestern New Jersey...

* Until 200 PM EDT.

* At 846 AM EDT, Minor flooding was occurring along streams and 
  creeks in the region, including the Pequest River near Huntsville. 
  The flooding was due to the heavy rain Monday night and Tuesday. 
  Flooding is already occurring in the warned area. Minor flooding 
  is expected to continue through at least early this afternoon.

* Some locations that may experience flooding include...
  Belvidere, Oxford, Hope, Andover, Great Meadows-Vienna, 
  Allamuchy-Panther Valley, and Greendell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 4104 7478 4100 7471 4080 7498 4082 7508
      4084 7509 4085 7508 4085 7507 4086 7505
      4087 7505

$$

Meola
925 
WGUS81 KPHI 271751
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
151 PM EDT Wed Oct 27 2021

NJC037-041-271801-
/O.EXP.KPHI.FA.W.0063.000000T0000Z-211027T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
151 PM EDT Wed Oct 27 2021

...FLOOD WARNING WILL EXPIRE AT 2 PM EDT THIS AFTERNOON FOR SOUTH 
CENTRAL SUSSEX AND CENTRAL WARREN COUNTIES...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4104 7478 4100 7471 4080 7498 4082 7508
      4084 7509 4085 7508 4085 7507 4086 7505
      4087 7505

$$

Meola

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 26, 8:18 PM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean21 hr
Oct 26, 9:24 PM EDTAreal Flood WarningPHISomerset2 hr
Oct 26, 11:23 PM EDTAreal Flood AdvisoryPHIMiddlesex, Monmouth, Ocean5 hr
Oct 27, 12:12 AM EDTRiver Flood WarningPHIEssex, Morris, Passaic5 days
Oct 27, 4:26 AM EDTRiver Flood WarningPHISussex, Warren26 hr
Oct 27, 4:26 AM EDTRiver Flood WarningPHIHunterdon, Warren38 hr
Oct 27, 9:55 AM EDTRiver Flood WarningPHIHunterdon, Mercer29 hr
Oct 27, 11:54 AM EDTSmall Craft AdvisoryPHI42 hr
Oct 27, 5:08 PM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more34 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.