Alert archive / New Jersey / Areal Flood Warnings in 2021

Areal Flood Warning 25, NWS Philadelphia/Mount Holly

August 23, 2021Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Aug 23, 2021, 5:07 AM EDT for Warren County, New Jersey. It was in force for 21 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
Aug 23, 2021, 5:07 AM EDT (09:07 UTC)
Expired
Aug 24, 2021, 1:49 AM EDT
In force
21 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

County Warren County, NJ

The radar

The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 09:09 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

TimeReportWhereRemark
Aug 23, 7:00 AM EDTHEAVY RAIN 4.31Blairstown Twp, NJCOCORAHS STATION NJ-WR-34 BLAIRSTOWN TWP 2.4 E.

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, 9.1 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 2021-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.193958Sfc1 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
59 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-66 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

800 
WGUS41 KPHI 230907
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
507 AM EDT Mon Aug 23 2021

NJC041-232000-
/O.NEW.KPHI.FA.W.0025.210823T0907Z-210823T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
507 AM EDT Mon Aug 23 2021

The National Weather Service in Mount Holly has issued a

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

* Until 400 PM EDT Monday.

* At 507 AM EDT, gauge reports indicated minor flooding along the 
  Paulins Kill in the Blairstown area. The minor flooding should 
  continue into the afternoon hours.

* Some locations that will experience flooding include...
  Blairstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

&&

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

Iovino
5 follow-up statements
634 
WGUS41 KPHI 231504
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1104 AM EDT Mon Aug 23 2021

NJC041-240000-
/O.EXT.KPHI.FA.W.0025.000000T0000Z-210824T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
1104 AM EDT Mon Aug 23 2021

The National Weather Service in Mount Holly has extended the

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

* Until 800 PM EDT Monday.

* At 1104 AM EDT, gauge reports indicated minor flooding along the 
  Paulins Kill in the Blairstown area. The flooding will continue 
  through this afternoon an into this evening.

* Some locations that will experience flooding include...
  Blairstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

Kruzdlo
455 
WGUS41 KPHI 232336
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
736 PM EDT Mon Aug 23 2021

NJC041-240200-
/O.EXT.KPHI.FA.W.0025.000000T0000Z-210824T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
736 PM EDT Mon Aug 23 2021

The National Weather Service in Mount Holly has extended the

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

* Until 1000 PM EDT.

* At 736 PM EDT, gauge reports indicated minor flooding along the 
  Paulins Kill in the Blairstown area. The flooding will continue 
  through into this evening.

* For Paulins Kill at Blairstown:
  At 7:15pm the stage was 5.66 feet.
  Flood Stage is 5 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

Deal
198 
WGUS41 KPHI 240132
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
932 PM EDT Mon Aug 23 2021

NJC041-240400-
/O.EXT.KPHI.FA.W.0025.000000T0000Z-210824T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
932 PM EDT Mon Aug 23 2021

The National Weather Service in Mount Holly has extended the

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

* Until midnight EDT.

* At 932 PM EDT, gauge reports indicated minor flooding along the 
  Paulins Kill in the Blairstown area. The flooding will continue 
  through into this evening.

* For Paulins Kill at Blairstown:
  At 9:15pm the stage was 5.46 feet.
  Flood Stage is 5 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

Deal
636 
WGUS41 KPHI 240348
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1148 PM EDT Mon Aug 23 2021

NJC041-240600-
/O.EXT.KPHI.FA.W.0025.000000T0000Z-210824T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
1148 PM EDT Mon Aug 23 2021

The National Weather Service in Mount Holly has extended the

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

* Until 200 AM EDT.

* At 1148 PM EDT, Minor flooding is still occurring in the warning 
  particularly near Paulins Kill, therefore the warning has been 
  extended.

* For Paulins Kill at Blairstown:
  At 11:45 PM the stage was 5.24 feet.
  Flood Stage is 5 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

NC
227 
WGUS81 KPHI 240549
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
149 AM EDT Tue Aug 24 2021

NJC041-240559-
/O.CAN.KPHI.FA.W.0025.000000T0000Z-210824T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-
149 AM EDT Tue Aug 24 2021

...FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL WARREN COUNTY...

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

LAT...LON 4095 7501 4098 7502 4107 7495 4101 7488
      4097 7492

$$

NC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 8:11 PM EDTAreal Flood AdvisoryPHIWarren6 hr
Aug 22, 8:47 PM EDTFlash Flood WarningPHISussex, Warren6 hr
Aug 22, 11:27 PM EDTAreal Flood WarningPHIMiddlesex29 hr
Aug 23, 2:09 AM EDTRiver Flood WarningPHIMorris, Passaic17 hr
Aug 23, 3:25 AM EDTAreal Flood WarningPHIMorris8 hr
Aug 23, 4:10 AM EDTRiver Flood WarningPHIMorris41 hr
Aug 23, 5:22 AM EDTAreal Flood WarningPHISomerset9 hr
Aug 23, 5:44 AM EDTAreal Flood WarningPHIHunterdon7 hr
Aug 23, 7:20 AM EDTRiver Flood WarningPHIHunterdon, Somerset7 hr
Aug 23, 7:47 AM EDTRiver Flood WarningPHIMorris, Passaic13 hr
Aug 23, 8:36 AM EDTAreal Flood WarningPHISomerset9 hr
Aug 23, 8:42 AM EDTRiver Flood WarningPHIMiddlesex, Somerset21 hr
Aug 23, 11:22 AM EDTRiver Flood WarningPHIMiddlesex, Somerset16 hr
Aug 23, 11:32 AM EDTRiver Flood WarningPHIEssex, Morris, Passaic5 days
Aug 23, 11:58 AM EDTRiver Flood WarningPHISomerset15 hr
Aug 23, 12:19 PM EDTRiver Flood WarningPHIBurlington33 hr
Aug 23, 12:51 PM EDTCoastal Flood StatementPHIOcean3 hr
Aug 23, 2:26 PM EDTAreal Flood WarningPHISussex14 hr
Aug 23, 2:26 PM EDTSpecial Weather StatementPHIOcean49 min
Aug 23, 3:12 PM EDTSpecial Weather StatementPHIOcean33 min
Aug 23, 3:15 PM EDTSevere Thunderstorm WarningPHIOcean45 min
Aug 23, 3:18 PM EDTSpecial Marine WarningPHI57 min
Aug 23, 3:38 PM EDTRiver Flood WarningPHIEssex, Morris, Passaic48 hr
Aug 23, 4:47 PM EDTSpecial Weather StatementPHIAtlantic28 min
Aug 23, 4:50 PM EDTSpecial Marine WarningPHI55 min
Aug 23, 5:13 PM EDTSpecial Weather StatementPHICamden32 min
Aug 23, 5:39 PM EDTSpecial Marine WarningPHI33 min
Aug 23, 6:46 PM EDTSpecial Marine WarningPHI64 min

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.