Alert archive / New Jersey / Areal Flood Warnings in 2021

Areal Flood Warning 58, NWS Philadelphia/Mount Holly

October 26, 20215 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 26, 2021, 7:38 AM EDT for 5 counties in New Jersey. It was in force for 37 hr. 7 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: Oct 26, 2021, 7:38 AM EDT (11:38 UTC)
Expired: Oct 27, 2021, 8:42 PM EDT
In force: 37 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 11:40 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
Oct 26, 7:45 AM EDT	HEAVY RAIN 3.31	Readington Twp, NJ
Oct 26, 7:48 AM EDT	FLOOD	1 Nnw Whitehouse Statio, NJ	FLOODING ON U.S. HIGHWAY 22 EAST OF POTTERSTOWN ROAD. ALL LANES CLOSED. TIME BASED ON DISPATCH REPORT.
Oct 26, 7:55 AM EDT	FLASH FLOOD	1 Ene Whitehouse Statio, NJ	US 22 CLOSED DUE TO FLASH FLOODING IN READINGTON TWP.
Oct 26, 7:55 AM EDT	FLASH FLOOD	1 Ese Oldwick, NJ	LAMINGTON ROAD CLOSED DUE TO FLOODING.
Oct 26, 7:55 AM EDT	FLASH FLOOD	2 Ese Stanton, NJ	PLEASANT RUN ROAD CLOSED DUE TO FLASH FLOODING.
Oct 26, 8:30 AM EDT	FLOOD	2 W Chester, NJ	TANNERS BROOK ROAD CLOSED IN THE AREA OF CARLISLE COURT FROM FLOODING. TIME BASED ON DISPATCH REPORT.
Oct 26, 11:23 AM EDT	FLOOD	2 W Stanton, NJ	STANTON ROAD CLOSED NEAR THE SOUTH BRANCH OF THE RARITAN RIVER DUE TO FLOODING.

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, 11.6 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 544 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 758 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

492 
WGUS41 KPHI 261138
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
738 AM EDT Tue Oct 26 2021

NJC019-027-035-037-041-261900-
/O.NEW.KPHI.FA.W.0058.211026T1138Z-211026T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Morris NJ-Somerset NJ-Sussex NJ-Warren NJ-
738 AM EDT Tue Oct 26 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for...
  Western Morris County in northern New Jersey...
  Northwestern Somerset County in northern New Jersey...
  Northern Hunterdon County in northwestern New Jersey...
  Sussex County in northwestern New Jersey...
  Warren County in northwestern New Jersey...

* Until 300 PM EDT Tuesday.

* At 738 AM EDT, Doppler radar and automated rain gauges indicated 
  heavy rain. Flooding is ongoing or expected to begin shortly in 
  the warned area. Between 1.5 and 3.5 inches of rain have fallen.

* Some locations that may experience flooding include...
  Newton, Montague, Dover, Hopatcong, Hackettstown, Wharton, 
  Washington, Blairstown, Mount Arlington, Franklin, and High Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4066 7519 4075 7520 4079 7511 4082 7508
      4085 7510 4086 7505 4099 7513 4109 7497
      4109 7499 4118 7488 4132 7479 4136 7469
      4120 7437 4109 7450 4103 7450 4104 7443
      4102 7444 4072 7472 4052 7473

$$

CMS

6 follow-up statements

606 
WGUS41 KPHI 261833 RRC
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
233 PM EDT Tue Oct 26 2021

NJC019-027-035-037-041-270000-
/O.EXT.KPHI.FA.W.0058.000000T0000Z-211027T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Morris NJ-Somerset NJ-Sussex NJ-Warren NJ-
233 PM EDT Tue Oct 26 2021

The National Weather Service in Mount Holly has extended the

* Flood Warning for...
  Western Morris County in northern New Jersey...
  Northwestern Somerset County in northern New Jersey...
  Northern Hunterdon County in northwestern New Jersey...
  Sussex County in northwestern New Jersey...
  Warren County in northwestern New Jersey...

* Until 800 PM EDT.

* At 233 PM EDT, Flooding continues on several local roads, creeks, 
  and streams in the warned area. Between 2 and 4 inches of rain 
  have fallen. Although the heavy rain has ended, additional showers 
  are possible through the rest of today and this evening.

* Some locations that may experience flooding include...
  Easton, Newton, Montague, Dover, Hopatcong, Hackettstown, Wharton, 
  Washington, Blairstown, Mount Arlington, Franklin, and High Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4066 7519 4075 7520 4079 7511 4082 7508
      4085 7510 4086 7505 4099 7513 4109 7497
      4109 7499 4118 7488 4132 7479 4136 7469
      4120 7437 4109 7450 4103 7450 4104 7443
      4102 7444 4072 7472 4052 7473

$$

Robertson

638 
WGUS81 KPHI 262338
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
738 PM EDT Tue Oct 26 2021

NJC019-027-035-262348-
/O.CAN.KPHI.FA.W.0058.000000T0000Z-211027T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Morris NJ-Somerset NJ-
738 PM EDT Tue Oct 26 2021

...FLOOD WARNING IS CANCELLED FOR WESTERN MORRIS, NORTHWESTERN 
SOMERSET, AND NORTHERN HUNTERDON COUNTIES...

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

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

NJC037-041-270000-
/O.CON.KPHI.FA.W.0058.000000T0000Z-211027T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
738 PM EDT Tue Oct 26 2021

...FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR 
SOUTHWESTERN SUSSEX AND NORTHERN WARREN COUNTIES...

At 738 PM EDT, Minor flooding was occurring along streams and creeks 
in the region, including Paulins Kill and Flat Brook.

Some locations that may experience flooding include...
  Newton, Blairstown, Millbrook, Flatbrookville, Five Points, and 
  Crandon Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

Iovino

706 
WGUS41 KPHI 262341
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
741 PM EDT Tue Oct 26 2021

NJC037-041-271200-
/O.EXT.KPHI.FA.W.0058.000000T0000Z-211027T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
741 PM EDT Tue Oct 26 2021

The National Weather Service in Mount Holly has extended the

* Flood Warning for...
  Southwestern Sussex County in northwestern New Jersey...
  Northern Warren County in northwestern New Jersey...

* Until 800 AM EDT Wednesday.

* At 741 PM EDT, Minor flooding was occurring along streams and 
  creeks in the region, including Paulins Kill and Flat Brook. The 
  flooding was due to Tuesday's heavy rainfall. The minor flooding 
  is expected to continue overnight, with most streams and creeks 
  returning within their banks on Wednesday morning.

* Some locations that may experience flooding include...
  Newton, Blairstown, Millbrook, Flatbrookville, Five Points, and 
  Crandon Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

Iovino

456 
WGUS41 KPHI 271128
FLWPHI

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

NJC037-041-272200-
/O.EXT.KPHI.FA.W.0058.000000T0000Z-211027T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
728 AM EDT Wed Oct 27 2021

The National Weather Service in Mount Holly has extended the

* Flood Warning for...
  Southwestern Sussex County in northwestern New Jersey...
  Northern Warren County in northwestern New Jersey...

* Until 600 PM EDT Wednesday.

* At 728 AM EDT, Minor flooding was occurring along streams and 
  creeks in the region, including Paulins Kill. The flooding was due 
  to Tuesday's heavy rainfall. The minor flooding is expected to 
  continue this morning, falling below flood stage this afternoon.

* Some locations that may experience flooding include...
  Newton, Blairstown, Millbrook, Flatbrookville, Five Points, and 
  Crandon Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

Meola

460 
WGUS41 KPHI 272154
FLWPHI

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

NJC037-041-280200-
/O.EXT.KPHI.FA.W.0058.000000T0000Z-211028T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
554 PM EDT Wed Oct 27 2021

The National Weather Service in Mount Holly has extended the

* Flood Warning for...
  Southwestern Sussex County in northwestern New Jersey...
  Northern Warren County in northwestern New Jersey...

* Until 1000 PM EDT.

* At 554 PM EDT, Minor flooding was occurring along streams and 
  creeks in the region, including Paulins Kill. The flooding was due 
  to Tuesday's heavy rainfall. The minor flooding is expected to 
  continue early this evening before levels fall below flood stage 
  later this evening.

* Some locations that may experience flooding include...
  Newton, Blairstown, Millbrook, Flatbrookville, Five Points, and 
  Crandon Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

Fitzsimmons

555 
WGUS81 KPHI 280042
FLSPHI

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

NJC037-041-280052-
/O.CAN.KPHI.FA.W.0058.000000T0000Z-211028T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
842 PM EDT Wed Oct 27 2021

...FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN SUSSEX AND NORTHERN 
WARREN COUNTIES...

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

LAT...LON 4086 7505 4087 7505 4089 7507 4091 7508
      4099 7513 4102 7509 4102 7507 4104 7503
      4106 7501 4109 7497 4110 7497 4109 7499
      4113 7494 4114 7492 4118 7488 4106 7475

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 8:26 PM EDT	Special Weather Statement	PHI	Mercer	34 min
Oct 25, 8:33 PM EDT	Special Weather Statement	PHI	Warren	42 min
Oct 25, 9:09 PM EDT	Special Weather Statement	PHI	Middlesex, Morris, Somerset	51 min
Oct 26, 1:22 AM EDT	Areal Flood Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	5 hr
Oct 26, 2:08 AM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	4 hr
Oct 26, 3:08 AM EDT	Flash Flood Warning	PHI	Middlesex, Monmouth, Ocean	8 hr
Oct 26, 4:14 AM EDT	Flash Flood Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	4 hr
Oct 26, 5:22 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	2 hr
Oct 26, 6:09 AM EDT	Areal Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	3 hr
Oct 26, 6:18 AM EDT	Areal Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Somerset	13 hr
Oct 26, 7:15 AM EDT	Areal Flood Warning	PHI	Monmouth, Ocean	5 hr
Oct 26, 7:32 AM EDT	River Flood Warning	PHI	Somerset	28 hr
Oct 26, 8:07 AM EDT	Areal Flood Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	12 hr
Oct 26, 8:18 AM EDT	River Flood Warning	PHI	Morris, Somerset	8 hr
Oct 26, 10:12 AM EDT	River Flood Warning	PHI	Somerset	11 hr
Oct 26, 10:12 AM EDT	River Flood Warning	PHI	Middlesex, Somerset	24 hr
Oct 26, 10:12 AM EDT	River Flood Warning	PHI	Middlesex, Somerset	33 hr
Oct 26, 10:50 AM EDT	Areal Flood Warning	PHI	Middlesex, Monmouth, Ocean	9 hr
Oct 26, 4:24 PM EDT	River Flood Warning	PHI	Morris	31 hr
Oct 26, 4:28 PM EDT	River Flood Warning	PHI	Morris, Passaic	29 hr
Oct 26, 4:39 PM EDT	River Flood Warning	PHI	Essex, Morris, Passaic	54 hr
Oct 26, 4:39 PM EDT	River Flood Warning	PHI	Essex, Passaic	42 hr

Nearby

Areal Flood Warnings in New Jersey, 2021 Every 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.