Alert archive / New Jersey / River Flood Warnings in 2021
River Flood Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Aug 23, 2021, 11:22 AM EDT for Middlesex County, Somerset County, New Jersey. It took effect at Aug 23, 2021, 11:52 AM EDT. It was in force for 16 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2021, 11:22 AM EDT (15:22 UTC)
- In effect from
- Aug 23, 2021, 11:52 AM EDT
- Expired
- Aug 24, 2021, 3:35 AM EDT
- In force
- 16 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Middlesex County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 70 km from the middle of the area, began a volume at 15:22 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 Raritan River at Manville (MNVN4). The gauge peaked at 16.59 ft at Aug 23, 2021, 9:00 PM EDT.
- Action stage
- 12 ft
- Minor stage
- 14 ft
- Moderate stage
- 17 ft
- Major stage
- 20 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01400500, 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.
187
WGUS41 KPHI 231522
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1122 AM EDT Mon Aug 23 2021
...The National Weather Service in Mount Holly NJ has issued a Flood
Warning for the following rivers in New Jersey...
Raritan River At Manville affecting Somerset and Middlesex
Counties.
For the Raritan River...including Manville...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Additional information is available at www.weather.gov/phi.
NJC023-035-240330-
/O.NEW.KPHI.FL.W.0021.210823T1552Z-210824T1733Z/
/MNVN4.1.ER.210823T1552Z.210824T0600Z.210824T1132Z.NO/
1122 AM EDT Mon Aug 23 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for
the Raritan River At Manville.
* Until Tuesday afternoon.
* At 10:15 AM EDT Monday the stage was 13.6 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
this morning to a crest of 15.2 feet just after midnight tonight.
It will then fall below flood stage tomorrow morning.
* Impact...At 11.0 feet, At this level, inundation begins in Dukes
Park in Manville.
* Impact...At 12.0 feet, Cautionary/Action stage is reached. Roads
and trails flood within Dukes Park.
* Impact...At 13.0 feet, Southside Avenue in Somerville floods.
* Impact...At 15.0 feet, Dukes Parkway begins to flood in
Hillsborough.
* Impact...At 16.0 feet, Lincoln Avenue in the Lost Valley section
of Manville floods.
* Flood History...This crest compares to a previous crest of 14.9
feet on 03/11/2011.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Raritan River
Manville 14.0 13.6 Mon 10 am ED 10.4 6.4 MSG
&&
LAT...LON 4058 7464 4057 7456 4052 7456 4054 7471
$$
Kruzdlo3 follow-up statements
621
WGUS81 KPHI 231957
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
357 PM EDT Mon Aug 23 2021
...The Flood Warning continues for the following rivers in New
Jersey...
Raritan River At Manville affecting Somerset and Middlesex
Counties.
For the Raritan River...including Manville...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Additional information is available at www.weather.gov/phi.
NJC023-035-240800-
/O.CON.KPHI.FL.W.0021.000000T0000Z-210824T1733Z/
/MNVN4.1.ER.210823T1523Z.210824T0000Z.210824T0600Z.NO/
357 PM EDT Mon Aug 23 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Raritan River At Manville.
* Until Tuesday afternoon.
* At 3:15 PM EDT Monday the stage was 15.2 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:15 PM EDT Monday was 15.2 feet.
* Forecast...The river is expected to rise to a crest of 16.0 feet
this evening. It will then fall below flood stage just after
midnight tonight.
* Impact...At 11.0 feet, At this level, inundation begins in Dukes
Park in Manville.
* Impact...At 12.0 feet, Cautionary/Action stage is reached. Roads
and trails flood within Dukes Park.
* Impact...At 13.0 feet, Southside Avenue in Somerville floods.
* Impact...At 15.0 feet, Dukes Parkway begins to flood in
Hillsborough.
* Impact...At 16.0 feet, Lincoln Avenue in the Lost Valley section
of Manville floods.
* Impact...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.
* Flood History...This crest compares to a previous crest of 16.2
feet on 09/21/1989.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Raritan River
Manville 14.0 15.2 Mon 3 pm EDT 8.8 6.1 5.4
&&
LAT...LON 4058 7464 4057 7456 4052 7456 4054 7471
$$
Kruzdlo748
WGUS81 KPHI 240117
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
917 PM EDT Mon Aug 23 2021
...The Flood Warning is extended for the following rivers in New
Jersey...
Rockaway River At Boonton Below Resvr affecting Morris County.
...The Flood Warning continues for the following rivers in New
Jersey...
North Branch Rancocas Creek At Pemberton affecting Burlington
County.
Raritan River At Manville affecting Somerset and Middlesex
Counties.
Raritan River At Bound Brook affecting Somerset and Middlesex
Counties.
Millstone River At Blackwells Mills affecting Somerset County.
Passaic River Above Singac affecting Morris, Essex, and Passaic
Counties.
Passaic River At Pine Brook affecting Morris, Essex, and Passaic
Counties.
For the Passaic River...including Millington, Chatham, Pine Brook,
Singac, Little Falls...Moderate flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/phi.
NJC005-241200-
/O.EXT.KPHI.FL.W.0024.000000T0000Z-210824T1200Z/
/PEBN4.1.ER.210824T0015Z.210824T0100Z.210824T0600Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until tomorrow morning...
The Flood Warning continues for
the North Branch Rancocas Creek At Pemberton.
* Until Tuesday morning.
* At 9:00 PM EDT Monday the stage was 2.5 feet.
* Flood stage is 2.5 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 9:00 PM EDT Monday was 2.5 feet.
* Forecast...The river is expected to fall below flood stage just
after midnight tonight and continue falling to 2.0 feet Thursday
evening.
* Impact...At 2.5 feet, Some minor flooding begins in Eastampton
along Rustic, Peninsula, and Paducah Roads. Lee Street, Joe Road,
and Jill Court in Southampton also begin to flood.
* Flood History...This crest compares to a previous crest of 2.5
feet on 04/18/2011.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
North Branch Rancocas Creek
Pemberton 2.5 2.5 Mon 9 pm EDT 2.4 2.1 2.0
&&
LAT...LON 4001 7482 3998 7466 3998 7459 3993 7457
3993 7468 3998 7487
$$
NJC023-035-241200-
/O.EXT.KPHI.FL.W.0021.000000T0000Z-210824T1200Z/
/MNVN4.1.ER.210823T1523Z.210824T0015Z.210824T0600Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until tomorrow morning...
The Flood Warning continues for
the Raritan River At Manville.
* Until Tuesday morning.
* At 8:15 PM EDT Monday the stage was 16.6 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM EDT Monday was 16.6 feet.
* Forecast...The river is expected to fall below flood stage just
after midnight tonight and continue falling to 5.4 feet early
Thursday afternoon.
* Impact...At 16.0 feet, Lincoln Avenue in the Lost Valley section
of Manville floods.
* Impact...At 17.0 feet, Street and roadway flooding increases
across the Manville area. The Van Veghten Bridge and Main Street
in Manville are flooded as well as 5th Street in Somerville. The
amount of flooding can vary from event to event and can be
affected by the amount of water in the Millstone.
* Flood History...This crest compares to a previous crest of 16.6
feet on 01/05/1982.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Raritan River
Manville 14.0 16.6 Mon 8 pm EDT 7.7 5.7 MSG
&&
LAT...LON 4058 7464 4057 7456 4052 7456 4054 7471
$$
NJC023-035-241330-
/O.EXT.KPHI.FL.W.0020.000000T0000Z-210824T1600Z/
/BDKN4.2.ER.210823T1113Z.210824T0015Z.210824T1000Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until early tomorrow
afternoon...
The Flood Warning continues for
the Raritan River At Bound Brook.
* Until Tuesday afternoon.
* At 8:15 PM EDT Monday the stage was 30.4 feet.
* Flood stage is 28.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM EDT Monday was 30.4 feet.
* Forecast...The river is expected to fall below flood stage
tomorrow morning and continue falling to 19.2 feet early Thursday
afternoon.
* Impact...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.
* Impact...At 30.0 feet, Main Street is protected by flap
valves/sluice gates. This level triggers the gate closures to
protect Main Street.
* Flood History...This crest compares to a previous crest of 30.5
feet on 02/01/1973.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Raritan River
Bound Brook 28.0 30.4 Mon 8 pm EDT 24.1 20.3 MSG
&&
LAT...LON 4057 7456 4056 7448 4049 7438 4045 7442
4051 7452 4052 7456
$$
NJC027-241330-
/O.EXT.KPHI.FL.W.0017.000000T0000Z-210825T0400Z/
/BONN4.1.ER.210823T0900Z.210824T0000Z.210824T2200Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until early Wednesday
morning...
The Flood Warning continues for
the Rockaway River At Boonton Below Resvr.
* Until late Tuesday night.
* At 8:00 PM EDT Monday the stage was 6.2 feet.
* Flood stage is 5.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:00 PM EDT Monday was 6.2 feet.
* Forecast...The river is expected to fall below flood stage
tomorrow evening and continue falling to 3.8 feet Thursday evening.
* Impact...At 6.0 feet, Flooding occurs on Vail Road in Montville.
The Road heading into Parsippany is subject to closures.
* Flood History...This crest compares to a previous crest of 6.2
feet on 04/02/1993.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Rockaway River
Boonton Below Resv 5.0 6.2 Mon 8 pm EDT 4.9 4.0 3.8
&&
LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436
$$
NJC035-241330-
/O.EXT.KPHI.FL.W.0011.000000T0000Z-210825T0500Z/
/BKWN4.2.ER.210822T2033Z.210823T1600Z.210824T2300Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until early Wednesday
morning...
The Flood Warning continues for
the Millstone River At Blackwells Mills.
* Until late Tuesday night.
* At 8:15 PM EDT Monday the stage was 13.3 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM EDT Monday was 14.2 feet.
* Forecast...The river is expected to fall below flood stage
tomorrow evening and continue falling to 2.8 feet early Thursday
afternoon.
* Impact...At 10.0 feet, The D&R Canal is flooded by the Millstone
River.
* Impact...At 13.0 feet, Washington Street and several businesses
are flooded.
* Flood History...This crest compares to a previous crest of 13.2
feet on 12/21/1973.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Millstone River
Blackwells Mill 9.0 13.3 Mon 8 pm EDT 8.8 3.9 MSG
&&
LAT...LON 4045 7463 4048 7461 4055 7460 4054 7453
4046 7454 4043 7456
$$
NJC013-027-031-241330-
/O.EXT.KPHI.FL.W.0025.210824T0249Z-210826T0900Z/
/SIGN4.1.ER.210824T0249Z.210824T1800Z.210826T0300Z.NR/
917 PM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until early Thursday morning...
The Flood Warning continues for
the Passaic River Above Singac.
* Until late Wednesday night.
* At 8:45 PM EDT Monday the stage was 8.4 feet.
* Flood stage is 8.5 feet.
* Minor flooding is forecast. This approaches the flood of record.
* Forecast...The river is expected to rise above flood stage late
this evening to a crest of 9.1 feet early tomorrow afternoon. It
will then fall below flood stage late Wednesday evening.
* Impact...At 8.5 feet, Portions of the Wayne Town Center parking
lot begin to flood. Hobson Avenue and Riverlawn Drive in Wayne
begin to flood. Fairfield Road, Fayette Avenue, and Riversedge
Road in Wayne can flood as water backs up the Pompton River.
Lincoln Boulevard in Lincoln Park can also flood due to backwater
up the Pompton river. The Pequannock River Park also floods.
* Impact...At 9.0 feet, Two Bridges Road in Fairfield is subject to
closures.
* Impact...At 9.5 feet, Camp Lane and Marginal Road in Fairfield
begins to flood.
* Flood History...This crest compares to a previous crest of 9.1
feet on 11/28/2018.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Passaic River
Singac 8.5 8.4 Mon 8 pm EDT 9.0 8.6 7.9
&&
LAT...LON 4093 7424 4092 7423 4086 7425 4088 7427
4088 7435 4093 7433
$$
NJC013-027-031-241330-
/O.CON.KPHI.FL.W.0022.000000T0000Z-000000T0000Z/
/PINN4.2.ER.210823T1845Z.210825T0000Z.000000T0000Z.NO/
917 PM EDT Mon Aug 23 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Passaic River At Pine Brook.
* Until further notice.
* At 8:15 PM EDT Monday the stage was 19.5 feet.
* Flood stage is 19.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM EDT Monday was 19.5 feet.
* Forecast...The river is expected to rise to a crest of 20.1 feet
tomorrow evening.
* Impact...At 19.0 feet, Street flooding begins in Fairfield
including Camp Lane Road. Two Bridges Road is closed going into
Lincoln Park and Wayne.
* Impact...At 19.5 feet, Horseneck Road in Fairfield is subject to
flooding and closures.
* Impact...At 20.0 feet, Eagle Rock Avenue in Roseland is subject to
flooding. Camp Lane Road, River Edge Drive and Broadway Lane in
Fairfield are flooded. Stewart Place is closed.
* Flood History...This crest compares to a previous crest of 20.1
feet on 05/13/1998.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Passaic River
Pine Brook 19.0 19.5 Mon 8 pm EDT 20.1 19.8 19.4
&&
LAT...LON 4088 7427 4082 7430 4081 7438 4088 7435
$$
Deal341
WGUS81 KPHI 240735
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
335 AM EDT Tue Aug 24 2021
...The Flood Warning is cancelled for the following rivers in New
Jersey...
Raritan River At Manville affecting Somerset and Middlesex
Counties.
NJC023-035-240845-
/O.CAN.KPHI.FL.W.0021.000000T0000Z-210824T0735Z/
/MNVN4.1.ER.210823T1523Z.210824T0015Z.210824T0600Z.NO/
335 AM EDT Tue Aug 24 2021
...The Flood Warning for the Raritan River At Manville has been
cancelled...
The Flood Warning is cancelled for
the Raritan River At Manville.
* At 315 AM the observed stage was 13.89 ft
* Flood stage is 14.0 feet.
* Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM EDT Monday was 16.6 feet.
* Forecast...The river has dropped below flood stage and is expected
to remain below flood stage.
&&
Fld Observed Forecasts (2 am EDT)
Location Stg Stg Day/Time Wed Thu Fri
Raritan River
Manville 14.0 13.9 Tue 3 am EDT 6.1 5.6 5.3
&&
LAT...LON 4058 7464 4057 7456 4052 7456 4054 7471
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 8:11 PM EDT | Areal Flood Advisory | PHI | Warren | 6 hr |
| Aug 22, 8:47 PM EDT | Flash Flood Warning | PHI | Sussex, Warren | 6 hr |
| Aug 22, 11:27 PM EDT | Areal Flood Warning | PHI | Middlesex | 29 hr |
| Aug 23, 2:09 AM EDT | River Flood Warning | PHI | Morris, Passaic | 17 hr |
| Aug 23, 3:25 AM EDT | Areal Flood Warning | PHI | Morris | 8 hr |
| Aug 23, 4:10 AM EDT | River Flood Warning | PHI | Morris | 41 hr |
| Aug 23, 5:07 AM EDT | Areal Flood Warning | PHI | Warren | 21 hr |
| Aug 23, 5:22 AM EDT | Areal Flood Warning | PHI | Somerset | 9 hr |
| Aug 23, 5:44 AM EDT | Areal Flood Warning | PHI | Hunterdon | 7 hr |
| Aug 23, 7:20 AM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 7 hr |
| Aug 23, 7:47 AM EDT | River Flood Warning | PHI | Morris, Passaic | 13 hr |
| Aug 23, 8:36 AM EDT | Areal Flood Warning | PHI | Somerset | 9 hr |
| Aug 23, 8:42 AM EDT | River Flood Warning | PHI | Middlesex, Somerset | 21 hr |
| Aug 23, 11:32 AM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 5 days |
| Aug 23, 11:58 AM EDT | River Flood Warning | PHI | Somerset | 15 hr |
| Aug 23, 12:19 PM EDT | River Flood Warning | PHI | Burlington | 33 hr |
| Aug 23, 12:51 PM EDT | Coastal Flood Statement | PHI | Ocean | 3 hr |
| Aug 23, 2:26 PM EDT | Areal Flood Warning | PHI | Sussex | 14 hr |
| Aug 23, 2:26 PM EDT | Special Weather Statement | PHI | Ocean | 49 min |
| Aug 23, 3:12 PM EDT | Special Weather Statement | PHI | Ocean | 33 min |
| Aug 23, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 45 min |
| Aug 23, 3:18 PM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 23, 3:38 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 48 hr |
| Aug 23, 4:47 PM EDT | Special Weather Statement | PHI | Atlantic | 28 min |
| Aug 23, 4:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| Aug 23, 5:13 PM EDT | Special Weather Statement | PHI | Camden | 32 min |
| Aug 23, 5:39 PM EDT | Special Marine Warning | PHI | 33 min | |
| Aug 23, 6:46 PM EDT | Special Marine Warning | PHI | 64 min |
Nearby
River Flood Warnings in New Jersey, 2021Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.