Alert archive / New Jersey / River Flood Warnings in 2018

River Flood Warning 93, NWS Philadelphia/Mount Holly

December 21, 2018Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 21, 2018, 5:55 AM EST for Somerset County, New Jersey. It took effect at Dec 21, 2018, 4:00 PM EST. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Dec 21, 2018, 5:55 AM EST (10:55 UTC)
In effect from: Dec 21, 2018, 4:00 PM EST
Expired: Dec 21, 2018, 9:47 PM EST
In force: 6 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 10:56 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 8.47 ft at Dec 22, 2018, 5:00 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.

862 
WGUS41 KPHI 211055
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
555 AM EST Fri Dec 21 2018

...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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

NJC035-211654-
/O.NEW.KPHI.FL.W.0093.181221T2100Z-181223T0936Z/
/BKWN4.2.ER.181221T2100Z.181222T1200Z.181223T0336Z.NO/
555 AM EST Fri Dec 21 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Millstone River at Blackwells Mills.
* from this afternoon to late Saturday night...Or until the warning is 
  cancelled.
* At 5:15 AM Friday the stage was 3.4 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and continue to rise 
  to near 10.7 feet by tomorrow morning. The river will fall below flood stage by
  late tomorrow evening.
* 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 Dec 2 
  1996.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Millstone River
  Blackwells Mills       9.0    3.36  Fri 5 AM    10.7    Sat 7 AM 
 
&&
 
LAT...LON 4045 7463 4048 7461 4055 7460 4054 7453
      4046 7454 4043 7456             

$$

3 follow-up statements

507 
WGUS81 KPHI 211601
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1101 AM EST Fri Dec 21 2018

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

  Millstone River At Blackwells Mills affecting Somerset 
  County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.

&&

NJC035-220200-
/O.EXT.KPHI.FL.W.0093.181221T2100Z-181223T1240Z/
/BKWN4.2.ER.181221T2100Z.181222T1200Z.181223T0640Z.NO/
1101 AM EST Fri Dec 21 2018

The Flood Warning continues for
  The Millstone River at Blackwells Mills.
* From this afternoon to Sunday morning...or until the warning
  is cancelled.
* At 10:15 AM Friday the stage was 6.3 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and 
  continue to rise to near 10.9 feet by tomorrow morning. The 
  river will fall below flood stage by early Sunday morning.
* 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 11.0
  feet on Jun 5 2003.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Millstone River
  Blackwells Mills       9.0    6.31  Fri 10 AM    10.9    Sat 7 AM 
 
&&
 
LAT...LON 4045 7463 4048 7461 4055 7460 4054 7453
      4046 7454 4043 7456             

$$

Kruzdlo

320 
WGUS81 KPHI 212020
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
320 PM EST Fri Dec 21 2018

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

  Millstone River At Blackwells Mills affecting Somerset 
  County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.

&&

NJC035-220619-
/O.EXT.KPHI.FL.W.0093.181221T2100Z-181222T2200Z/
/BKWN4.1.ER.181221T2100Z.181222T1200Z.181222T1600Z.NO/
320 PM EST Fri Dec 21 2018

The Flood Warning continues for
  The Millstone River at Blackwells Mills.
* Until Saturday afternoon...or until the warning is cancelled.
* At 2:15 PM Friday the stage was 6.9 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage late this afternoon and 
  continue to rise to near 9.2 feet by tomorrow morning. The river 
  will fall below flood stage by late tomorrow morning.
* 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 Mar 12 2011.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Millstone River
  Blackwells Mills       9.0    6.93  Fri 2 PM     9.2    Sat 7 AM 
 
&&
 
LAT...LON 4045 7463 4048 7461 4055 7460 4054 7453
      4046 7454 4043 7456             

$$

Kruzdlo

876 
WGUS81 KPHI 220247
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
947 PM EST Fri Dec 21 2018

...The Flood Warning is cancelled for the Millstone River at
Blackwells Mills...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

NJC035-220317-
/O.CAN.KPHI.FL.W.0093.000000T0000Z-181222T2200Z/
/BKWN4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
947 PM EST Fri Dec 21 2018

The Flood Warning is cancelled for
  The Millstone River at Blackwells Mills.
* At 9:15 PM, the river level was 8.0 feet.
* Flood stage is 9.0 feet.
* Forecast...The river will crest below flood stage at 8.7 feet
  early on Saturday morning.

&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Millstone River
  Blackwells Mills       9.0   8.00  Fri 915 PM    8.7  Sat 7 AM 
 
&&
 
LAT...LON 4045 7463 4048 7461 4055 7460 4054 7453
      4046 7454 4043 7456             

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 21, 4:09 AM EST	Areal Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	16 hr
Dec 21, 4:27 AM EST	Areal Flood Warning	PHI	Sussex, Warren	8 hr
Dec 21, 4:36 AM EST	Areal Flood Warning	PHI	Atlantic, Burlington, Camden, Mercer, Middlesex, Monmouth and 1 more	7 hr
Dec 21, 4:50 AM EST	Areal Flood Warning	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	4 hr
Dec 21, 5:47 AM EST	River Flood Warning	PHI	Burlington	9 hr
Dec 21, 5:50 AM EST	River Flood Warning	PHI	Morris, Somerset	37 hr
Dec 21, 5:50 AM EST	River Flood Warning	PHI	Morris, Somerset	49 hr
Dec 21, 5:50 AM EST	River Flood Warning	PHI	Essex, Morris, Passaic	5 days
Dec 21, 5:50 AM EST	River Flood Warning	PHI	Essex, Passaic	3 days
Dec 21, 5:52 AM EST	River Flood Warning	PHI	Morris, Passaic	32 hr
Dec 21, 5:55 AM EST	River Flood Warning	PHI	Somerset	20 hr
Dec 21, 5:55 AM EST	River Flood Warning	PHI	Middlesex, Somerset	20 hr
Dec 21, 5:55 AM EST	River Flood Warning	PHI	Middlesex, Somerset	15 hr
Dec 21, 6:00 AM EST	River Flood Warning	PHI	Morris	42 hr
Dec 21, 6:30 AM EST	River Flood Warning	PHI	Mercer	5 hr
Dec 21, 6:37 AM EST	Small Craft Advisory	PHI		21 hr
Dec 21, 8:26 AM EST	Areal Flood Warning	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	4 hr
Dec 21, 10:38 AM EST	Special Marine Warning	PHI		37 min
Dec 21, 12:02 PM EST	Areal Flood Advisory	PHI	Monmouth, Ocean	4 hr
Dec 21, 12:49 PM EST	Marine Dense Fog Advisory	PHI		6 hr
Dec 21, 4:25 PM EST	Gale Warning	PHI		26 hr
Dec 21, 4:38 PM EST	River Flood Warning	PHI	Passaic	20 hr
Dec 21, 5:07 PM EST	Areal Flood Warning	PHI	Warren	4 hr

Nearby

River Flood Warnings in New Jersey, 2018 Every river flood warning in 2018

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.