Alert archive / New Jersey / River Flood Warnings in 2023

River Flood Warning 83, NWS Philadelphia/Mount Holly

December 28, 2023Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 28, 2023, 3:41 AM EST for Somerset County, New Jersey. It was in force for 16 hr.

The area

The outline as issued.

The facts

Issued: Dec 28, 2023, 3:41 AM EST (08:41 UTC)
Expired: Dec 28, 2023, 8:00 PM EST
In force: 16 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 08:45 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 river

Written for the forecast point North Branch Raritan River near Raritan (RRTN4). The gauge peaked at 11.76 ft at Dec 28, 2023, 11:00 AM EST.

Action stage: 8 ft
Minor stage: 10 ft
Moderate stage: 12 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01400000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

130 
WGUS41 KPHI 280841
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
341 AM EST Thu Dec 28 2023

...The National Weather Service in Mount Holly NJ has issued a Flood 
Warning for the following rivers in New Jersey...

  North Branch Raritan River At Raritan affecting Somerset County.



For the Raritan River...including Stanton, Raritan, Manville, Bound 
Brook...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this afternoon at 345 PM EST.

&&

NJC035-282045-
/O.NEW.KPHI.FL.W.0083.231228T0841Z-231229T0100Z/
/RRTN4.1.ER.231228T1038Z.231228T1200Z.231228T1925Z.NO/
341 AM EST Thu Dec 28 2023

...FLOOD WARNING IN EFFECT FROM EARLY THIS MORNING TO THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...North Branch Raritan River at Raritan.

* WHEN...From early this morning to this evening.

* IMPACTS...At 7.0 feet, Minor flooding begins upstream on Black 
  River Road.
  At 10.0 feet, Flooding occurs along Old York Road and in North 
  Branch Village.

* ADDITIONAL DETAILS...
  - At 3:30 AM EST Thursday the stage was 8.1 feet.
  - Forecast...The river is expected to rise above flood stage
    early this morning to a crest of 11.2 feet this morning. It
    will then fall below flood stage this afternoon.
  - Flood stage is 10.0 feet.
  - Flood History...This crest compares to a previous crest of
    11.2 feet on 04/17/2011.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 am)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

North Branch Rar
Raritan         10.0  8.1  Thu 3 am   7.2  4.7        11.2 7am 12/28


&&

LAT...LON 4063 7470 4062 7463 4058 7464 4054 7471


$$

AKL

3 follow-up statements

109 
WGUS41 KPHI 281504
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1004 AM EST Thu Dec 28 2023

...Forecast flooding changed from Minor to Moderate severity for the 
following rivers in New Jersey...

  North Branch Raritan River At Raritan affecting Somerset County.



For the Raritan River...including Raritan...Moderate flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening at 800 PM EST.

&&

NJC035-290100-
/O.CON.KPHI.FL.W.0083.000000T0000Z-231229T0100Z/
/RRTN4.2.ER.231228T1145Z.231228T1800Z.231228T2236Z.NO/
1004 AM EST Thu Dec 28 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and moderate flooding is 
  forecast.

* WHERE...North Branch Raritan River at Raritan.

* WHEN...Until this evening.

* IMPACTS...At 7.0 feet, Minor flooding begins upstream on Black 
  River Road.
  At 10.0 feet, Flooding occurs along Old York Road and in North 
  Branch Village.
  At 13.0 feet, The first evacuations begin in Village of North 
  Branch at Route 28 and Vaanderveer Avenue.

* ADDITIONAL DETAILS...
  - At 9:45 AM EST Thursday the stage was 11.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:45 AM EST Thursday was 11.5 feet.
  - Forecast...The river is expected to rise to a crest of 12.0
    feet this afternoon. It will then fall below flood stage late
    this afternoon.
  - Flood stage is 10.0 feet.
  - Flood History...This crest compares to a previous crest of
    12.0 feet on 07/23/2004.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

North Branch Rar
Raritan         10.0  11.5 Thu 9 am   6.0  4.6        12.0 1pm 12/28


&&

LAT...LON 4063 7470 4062 7463 4058 7464 4054 7471


$$

Hoeflich

018 
WGUS81 KPHI 281655
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1155 AM EST Thu Dec 28 2023

...The Flood Warning continues for the following rivers in New 
Jersey...

  North Branch Raritan River At Raritan affecting Somerset County.



For the Raritan River...including Raritan...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

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

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening at 800 PM EST.

&&

NJC035-290100-
/O.CON.KPHI.FL.W.0083.000000T0000Z-231229T0100Z/
/RRTN4.1.ER.231228T1145Z.231228T1545Z.231228T2217Z.NO/
1155 AM EST Thu Dec 28 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...North Branch Raritan River at Raritan.

* WHEN...Until this evening.

* IMPACTS...At 7.0 feet, Minor flooding begins upstream on Black 
  River Road.
  At 10.0 feet, Flooding occurs along Old York Road and in North 
  Branch Village.

* ADDITIONAL DETAILS...
  - At 11:45 AM EST Thursday the stage was 11.5 feet and falling.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 11:45 AM EST Thursday was 11.6 feet.
  - Forecast...The river is expected to rise to a crest of 11.5
    feet this afternoon. It will then fall below flood stage late
    this afternoon.
  - Flood stage is 10.0 feet.
  - Flood History...This crest compares to a previous crest of
    11.6 feet on 04/16/1983.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

North Branch Rar
Raritan         10.0  11.5 Thu 11 a   6.0  4.6      Crested & Falling


&&

LAT...LON 4063 7470 4062 7463 4058 7464 4054 7471


$$

Hoeflich

773 
WGUS81 KPHI 282037
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
337 PM EST Thu Dec 28 2023

...The Flood Warning is extended for the following rivers in New 
Jersey...

  Raritan River At Bound Brook affecting Somerset and Middlesex 
  Counties.

...The Flood Warning continues for the following rivers in New 
Jersey...

  Raritan River At Manville affecting Somerset and Middlesex 
  Counties.

...The Flood Warning is cancelled for the following rivers in New 
Jersey...

  North Branch Raritan River At Raritan affecting Somerset County.



For the Raritan River...including Stanton, Raritan, Manville, Bound 
Brook...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

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

Additional information is available at www.weather.gov/phi.

The next statement will be issued this afternoon at 445 PM EST.

&&

NJC035-282145-
/O.CAN.KPHI.FL.W.0083.000000T0000Z-231228T2037Z/
/RRTN4.1.ER.231228T1145Z.231228T1545Z.231228T1934Z.NO/
337 PM EST Thu Dec 28 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the North Branch Raritan River At Raritan.

* ADDITIONAL DETAILS...
  - At 3:15 PM EST Thursday the stage was 9.4 feet.
  - The river has crested and fallen below flood stage. The North
    Branch Raritan River gauge at South Branch remains in
    moderate flood stage at this time.
  - Forecast...The river is expected to fall to 4.1 feet early
    Sunday afternoon.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

North Branch Rar
Raritan         10.0  9.4  Thu 3 pm   5.3  4.3         MSG  unknown


&&

LAT...LON 4063 7470 4062 7463 4058 7464 4054 7471


$$

NJC023-035-290845-
/O.EXT.KPHI.FL.W.0089.000000T0000Z-231229T1200Z/
/BDKN4.1.ER.231228T1816Z.231229T0000Z.231229T0600Z.NO/
337 PM EST Thu Dec 28 2023

...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Raritan River at Bound Brook.

* WHEN...Until tomorrow morning.

* IMPACTS...At 28.0 feet, Backyard and low areas are protected by 
  levees and the flood wall. Without the levees or if there is a 
  breach in the levees, minor flooding will occur.
  At 30.0 feet, Main Street is protected by flap valves/sluice 
  gates. This level triggers the gate closures to protect Main 
  Street.

* ADDITIONAL DETAILS...
  - At 3:15 PM EST Thursday the stage was 28.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 3:15 PM EST Thursday was 28.9 feet.
  - Forecast...The river is expected to rise to a crest of 29.5
    feet this evening. It will then fall below flood stage just
    after midnight tonight.
  - Flood stage is 28.0 feet.
  - Flood History...This crest compares to a previous crest of
    29.5 feet on 03/11/1994.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

Raritan River
Bound Brook     28.0  28.9 Thu 3 pm   24.8 21.3       29.5 7pm 12/28


&&

LAT...LON 4057 7456 4056 7448 4049 7438 4045 7442
      4051 7452 4052 7456


$$

NJC023-035-290815-
/O.EXT.KPHI.FL.W.0086.000000T0000Z-231229T0811Z/
/MNVN4.1.ER.231228T1623Z.231228T2000Z.231229T0211Z.NO/
337 PM EST Thu Dec 28 2023

...FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Raritan River at Manville.

* WHEN...Until late tonight.

* IMPACTS...At 11.0 feet, At this level, inundation begins in Dukes 
  Park in Manville.
  At 12.0 feet, Cautionary/Action stage is reached. Roads and trails 
  flood within Dukes Park.
  At 13.0 feet, Southside Avenue in Somerville floods.
  At 15.0 feet, Dukes Parkway begins to flood in Hillsborough.
  At 16.0 feet, Lincoln Avenue in the Lost Valley section of 
  Manville floods.
  At 17.0 feet, Street and roadway flooding increases across the 
  Manville area. The Van Veghten Bridge and Main Street in Manville 
  are flooded as well as 5th Street in Somerville. The amount of 
  flooding can vary from event to event and can be affected by the 
  amount of water in the Millstone.

* ADDITIONAL DETAILS...
  - At 3:15 PM EST Thursday the stage was 16.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 3:15 PM EST Thursday was 16.2 feet.
  - Forecast...The river is expected to fall below flood stage
    late this evening and continue falling to 6.1 feet early
    Sunday afternoon.
  - Flood stage is 14.0 feet.
  - Flood History...This crest compares to a previous crest of
    16.2 feet on 09/21/1989.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Fri  Sat        Stg Time Date

Raritan River
Manville        14.0  16.2 Thu 3 pm   8.8  6.5         MSG  unknown


&&

LAT...LON 4058 7464 4057 7456 4052 7456 4054 7471


$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 27, 11:29 PM EST	Areal Flood Warning	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Morris and 3 more	8 hr
Dec 28, 12:10 AM EST	Small Craft Advisory	PHI		30 hr
Dec 28, 12:24 AM EST	Areal Flood Warning	PHI	Hunterdon	9 hr
Dec 28, 12:26 AM EST	Areal Flood Advisory	PHI	Mercer, Middlesex, Monmouth, Morris, Somerset, Sussex	84 min
Dec 28, 1:37 AM EST	River Flood Warning	PHI	Hunterdon, Somerset	12 hr
Dec 28, 1:50 AM EST	Areal Flood Warning	PHI	Mercer, Middlesex, Monmouth, Morris, Somerset, Sussex	6 hr
Dec 28, 2:33 AM EST	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	39 hr
Dec 28, 2:48 AM EST	Areal Flood Warning	PHI	Morris	8 hr
Dec 28, 3:22 AM EST	Areal Flood Warning	PHI	Somerset	8 hr
Dec 28, 4:05 AM EST	River Flood Warning	PHI	Morris, Somerset	21 days
Dec 28, 8:31 AM EST	River Flood Warning	PHI	Middlesex, Somerset	16 hr
Dec 28, 9:05 AM EST	River Flood Warning	PHI	Essex, Morris, Passaic	5 days
Dec 28, 9:30 AM EST	River Flood Warning	PHI	Passaic	11 hr
Dec 28, 10:48 AM EST	Areal Flood Warning	PHI	Morris	3 hr
Dec 28, 11:02 AM EST	River Flood Warning	PHI	Middlesex, Somerset	15 hr
Dec 28, 11:05 AM EST	River Flood Warning	PHI	Morris	33 hr
Dec 28, 11:32 AM EST	River Flood Warning	PHI	Somerset	23 hr
Dec 28, 11:38 AM EST	River Flood Warning	PHI	Essex, Morris, Passaic	3 days
Dec 28, 12:18 PM EST	River Flood Warning	PHI	Essex, Passaic	70 hr

Nearby

River Flood Warnings in New Jersey, 2023 Every river flood warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.