Alert archive / New Jersey / River Flood Warnings in 2020

River Flood Warning 68, NWS Philadelphia/Mount Holly

December 25, 2020Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 25, 2020, 2:12 PM EST for Somerset County, New Jersey. It took effect at Dec 25, 2020, 3:46 PM EST. It was in force for 18 hr.

The area

The outline as issued.

The facts

Issued: Dec 25, 2020, 2:12 PM EST (19:12 UTC)
In effect from: Dec 25, 2020, 3:46 PM EST
Expired: Dec 26, 2020, 10:10 AM EST
In force: 18 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Moderate

County Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 19:13 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 Millstone River at Blackwells Mills (BKWN4). The gauge peaked at 9.49 ft at Dec 26, 2020, 12:00 AM EST.

Action stage: 7 ft
Minor stage: 9 ft
Moderate stage: 10 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01402000, 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.

529 
WGUS41 KPHI 251912
FLWPHI

BULLETIN - EAS ACTIVATION REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
212 PM EST Fri Dec 25 2020

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

  Millstone River At Blackwells Mills affecting Somerset County.

For the Millstone River...including Blackwells Mills...Moderate 
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.


NJC035-260715-
/O.NEW.KPHI.FL.W.0068.201225T2046Z-201227T0149Z/
/BKWN4.2.ER.201225T2046Z.201226T0600Z.201226T1948Z.NO/
212 PM EST Fri Dec 25 2020

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the Millstone River At Blackwells Mills.
* Until Saturday evening.
* At 1:15 PM EST Friday the stage was 8.1 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this afternoon to a crest of 10.4 feet just after midnight 
  tonight. It will then fall below flood stage early tomorrow 
  afternoon.
* Impact at 10.0 feet...The D&R Canal is flooded by the Millstone 
  River.
* Flood History...This crest compares to a previous crest of 10.5 
  feet on 03/22/1999.

&&


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

Millstone River
Blackwells Mill 9.0   8.1  Fri 1 pm   9.3  5.1        10.4 1am 12/26





&&

LAT...LON 4045 7463 4047 7461 4054 7459 4054 7453
      4046 7454 4043 7456

$$

SFJ

3 follow-up statements

662 
WGUS81 KPHI 252332
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
632 PM EST Fri Dec 25 2020

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

  Millstone River At Blackwells Mills affecting Somerset County.

For the Millstone River...including Blackwells Mills...minor 
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.


NJC035-261145-
/O.EXT.KPHI.FL.W.0068.000000T0000Z-201226T1520Z/
/BKWN4.1.ER.201225T2306Z.201226T0600Z.201226T0920Z.NO/
632 PM EST Fri Dec 25 2020

...The Flood Warning is now in effect until late tomorrow morning...

The Flood Warning continues for
  the Millstone River At Blackwells Mills.
* Until Saturday morning.
* At 6:15 PM EST Friday the stage was 9.0 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 6:15 PM EST Friday was 9.0 feet.
* Forecast...The river is expected to rise to a crest of 9.5 feet 
  just after midnight tonight. It will then fall below flood stage 
  late tonight.
* Impact at 9.0 feet...Flood stage reached with flooding now along 
  River Road in Blackwells Mills and S. River Street in Millstone. 
  Base of Route 533 bridge floods. River Road between Yorktown and 
  Amsterdam is subject to closure. Canal Road near Suydam Road 
  floods.
* Flood History...This crest compares to a previous crest of 9.7 
  feet on 01/19/2015.

&&


Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Sat  Sun        Stg Time Date

Millstone River
Blackwells Mill 9.0   9.0  Fri 6 pm   7.1  3.7        9.5 1am 12/26





&&

LAT...LON 4045 7463 4047 7461 4054 7459 4054 7453
      4046 7454 4043 7456

$$

Iovino

811 
WGUS81 KPHI 260905
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
405 AM EST Sat Dec 26 2020

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

  Millstone River At Blackwells Mills affecting Somerset County.

For the Millstone River...including Blackwells Mills...Minor 
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.


NJC035-261530-
/O.CON.KPHI.FL.W.0068.000000T0000Z-201226T1520Z/
/BKWN4.1.ER.201225T2306Z.201226T0430Z.201226T1245Z.NO/
405 AM EST Sat Dec 26 2020

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Millstone River At Blackwells Mills.
* Until this morning.
* At 3:15 AM EST Saturday the stage was 9.4 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 3:15 AM EST Saturday was 9.5 feet.
* Forecast...The river has crested. It is expected to fall below 
  flood stage this morning and continue falling to 2.7 feet early 
  Tuesday morning.
* Impact at 6.0 feet...The Griggstown Causway is closed due to 
  flooding. Impact at 7.0 feet...Several more causways are closed 
  due to flooding. Impact at 9.0 feet...Flood stage reached with 
  flooding now along River Road in Blackwells Mills and S. River 
  Street in Millstone. Base of Route 533 bridge floods. River Road 
  between Yorktown and Amsterdam is subject to closure. Canal Road 
  near Suydam Road floods.
* Flood History...This crest compares to a previous crest of 9.2 
  feet on 03/12/2011.

&&


Stream          Fld   Observed        Fcsts (7 am)        Crest
Location        Stg   Stg Day/Time    Sun  Mon        Stg Time Date

Millstone River
Blackwells Mill 9.0   9.4  Sat 3 am   5.4  3.0        Crested   





&&

LAT...LON 4045 7463 4047 7461 4054 7459 4054 7453
      4046 7454 4043 7456

$$

CMS

949 
WGUS81 KPHI 261510
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1010 AM EST Sat Dec 26 2020

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

  Millstone River At Blackwells Mills affecting Somerset County.

NJC035-261615-
/O.CAN.KPHI.FL.W.0068.000000T0000Z-201226T1510Z/
/BKWN4.1.ER.201225T2306Z.201226T0430Z.201226T1245Z.NO/
1010 AM EST Sat Dec 26 2020

...The Flood Warning for the Millstone River At Blackwells Mills has 
been cancelled...

The Flood Warning is cancelled for
  the Millstone River At Blackwells Mills.
* At 9:15 AM EST Saturday the stage was 8.8 feet.
* Flood stage is 9.0 feet.
* Forecast...The river is expected to fall to 2.7 feet Tuesday 
  morning.

&&


Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Sun  Mon        Stg Time Date

Millstone River
Blackwells Mill 9.0   8.8  Sat 9 am   4.5  2.9        Crested   





&&

LAT...LON 4045 7463 4047 7461 4054 7459 4054 7453
      4046 7454 4043 7456

$$

Kruzdlo

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 24, 8:39 PM EST	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	6 hr
Dec 24, 9:08 PM EST	Coastal Flood Advisory	PHI	Burlington, Camden	14 hr
Dec 24, 9:16 PM EST	Areal Flood Advisory	PHI	Hunterdon, Warren	3 hr
Dec 24, 9:38 PM EST	Areal Flood Warning	PHI	Camden	14 hr
Dec 24, 11:10 PM EST	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Dec 24, 11:48 PM EST	Areal Flood Warning	PHI	Hunterdon, Mercer, Morris, Somerset, Warren	15 hr
Dec 25, 12:00 AM EST	Areal Flood Warning	PHI	Middlesex, Somerset	6 hr
Dec 25, 12:03 AM EST	Coastal Flood Statement	PHI	Ocean	12 hr
Dec 25, 1:37 AM EST	Areal Flood Advisory	PHI	Morris, Sussex, Warren	10 hr
Dec 25, 1:56 AM EST	Areal Flood Warning	PHI	Burlington, Camden	7 hr
Dec 25, 2:05 AM EST	River Flood Warning	PHI	Hunterdon, Somerset	4 hr
Dec 25, 3:22 AM EST	Gale Warning	PHI		6 hr
Dec 25, 3:22 AM EST	Small Craft Advisory	PHI		51 hr
Dec 25, 5:43 AM EST	Areal Flood Advisory	PHI	Mercer, Middlesex, Somerset	3 hr
Dec 25, 7:25 AM EST	River Flood Warning	PHI	Morris, Passaic	37 hr
Dec 25, 11:27 AM EST	Areal Flood Warning	PHI	Sussex, Warren	16 hr
Dec 25, 12:17 PM EST	River Flood Warning	PHI	Middlesex, Somerset	9 hr
Dec 25, 12:53 PM EST	Coastal Flood Statement	PHI	Burlington, Ocean	4 hr
Dec 25, 2:11 PM EST	River Flood Warning	PHI	Middlesex, Somerset	7 hr
Dec 25, 2:26 PM EST	River Flood Warning	PHI	Hunterdon, Somerset	3 hr
Dec 25, 6:25 PM EST	River Flood Warning	PHI	Morris	21 hr

Nearby

River Flood Warnings in New Jersey, 2020 Every river flood warning in 2020

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.