Alert archive / New Jersey / River Flood Warnings in 2023

River Flood Warning 2, NWS Philadelphia/Mount Holly

April 30, 2023Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at Apr 30, 2023, 10:31 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 24 hr.

The area

The outline as issued.

The facts

Issued: Apr 30, 2023, 10:31 PM EDT (02:31 UTC)
Expired: May 1, 2023, 10:57 PM EDT
In force: 24 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

Counties Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 02:32 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 Passaic River at Chatham (CAMN4). The gauge peaked at 6.36 ft at May 1, 2023, 12:00 AM EDT.

Action stage: 5.5 ft
Minor stage: 6 ft
Moderate stage: 8 ft
Major stage: 10 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01379500, 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.

811 
WGUS41 KPHI 010231
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1031 PM EDT Sun Apr 30 2023

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

  Passaic River At Chatham affecting Morris and Somerset Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 Monday morning by 1145 AM EDT.

&&


NJC027-035-011600-
/O.NEW.KPHI.FL.W.0002.230501T0231Z-230501T1600Z/
/CAMN4.1.ER.230501T0225Z.230501T0300Z.230501T0600Z.NO/
1031 PM EDT Sun Apr 30 2023

...FLOOD WARNING IN EFFECT FROM THIS EVENING TO EARLY TOMORROW 
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Passaic River At Chatham.

* WHEN...From this evening to early tomorrow afternoon.

* IMPACTS...At 5.5 feet, Open areas adjacent to the Passaic River 
  flood in New Providence, Chatham Township, and Berkley Heights.
  At 6.0 feet, Portions of the Shepard Kolluck Park in Chatham 
  floods. River Road by Henry Drive is subject to closures.
  At 6.5 feet, The Central and Bridge Avenue bridges in Chatham 
  Township are subject to closures. Edgewood Road is closed.

* ADDITIONAL DETAILS...
  - At 9:15 PM EDT Sunday the stage was 5.8 feet.
  - Forecast...The river is expected to rise to a crest of 6.1
    feet tonight. It will then fall below flood stage sometime
    later Monday morning or by midday.
  - Flood stage is 6.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.1 feet on 04/02/2005.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (8 pm)        Crest
Location        Stg   Stg Day/Time    Mon  Tue        Stg Time Date

Passaic River
Chatham         6.0   5.8  Sun 9 pm   6.1  6.0        6.1 11pm 4/30


&&

LAT...LON 4082 7430 4074 7432 4060 7452 4067 7452
      4075 7441 4081 7438


$$

AAD

3 follow-up statements

493 
WGUS81 KPHI 011539
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1139 AM EDT Mon May 1 2023

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

  Passaic River At Chatham affecting Morris and Somerset Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

The next statement will be issued this evening by 600 PM EDT.

&&


NJC027-035-012200-
/O.EXT.KPHI.FL.W.0002.000000T0000Z-230501T2200Z/
/CAMN4.1.ER.230501T0225Z.230501T0400Z.230503T0000Z.NO/
1139 AM EDT Mon May 1 2023

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

* WHAT...Minor flooding is forecast.

* WHERE...Passaic River At Chatham.

* WHEN...Until this evening.

* IMPACTS...At 5.5 feet, Open areas adjacent to the Passaic River 
  flood in New Providence, Chatham Township, and Berkley Heights.
  At 6.0 feet, Portions of the Shepard Kolluck Park in Chatham 
  floods. River Road by Henry Drive is subject to closures.
  At 6.5 feet, The Central and Bridge Avenue bridges in Chatham 
  Township are subject to closures. Edgewood Road is closed.

* ADDITIONAL DETAILS...
  - At 11:15 AM EDT Monday the stage was 5.8 feet.
  - Forecast...The river is expected to rise to a crest of 6.0
    feet just after midnight tonight. It will then fall below
    flood stage tomorrow evening.
  - Flood stage is 6.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.0 feet on 01/27/1996.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (2 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Passaic River
Chatham         6.0   5.8  Mon 11 a   6.0  5.8        6.0 2am 5/02


&&

LAT...LON 4082 7430 4074 7432 4060 7452 4067 7452
      4075 7441 4081 7438


$$

Kruzdlo

530 
WGUS81 KPHI 012042
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
442 PM EDT Mon May 1 2023

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

  Passaic River At Chatham affecting Morris and Somerset Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

The next statement will be issued this evening by 1100 PM EDT.

&&


NJC027-035-020300-
/O.EXT.KPHI.FL.W.0002.000000T0000Z-230502T0300Z/
/CAMN4.1.ER.230501T0225Z.230501T0400Z.230503T0000Z.NO/
442 PM EDT Mon May 1 2023

...FLOOD WARNING NOW IN EFFECT UNTIL LATE THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Passaic River At Chatham.

* WHEN...Until late this evening.

* IMPACTS...At 5.5 feet, Open areas adjacent to the Passaic River 
  flood in New Providence, Chatham Township, and Berkley Heights.
  At 6.0 feet, Portions of the Shepard Kolluck Park in Chatham 
  floods. River Road by Henry Drive is subject to closures.
  At 6.5 feet, The Central and Bridge Avenue bridges in Chatham 
  Township are subject to closures. Edgewood Road is closed.

* ADDITIONAL DETAILS...
  - At 4:15 PM EDT Monday the stage was 5.8 feet.
  - Forecast...The river is expected to rise to a crest of 6.0
    feet just after midnight tonight. It will then fall below
    flood stage tomorrow evening.
  - Flood stage is 6.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.0 feet on 01/27/1996.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (2 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Passaic River
Chatham         6.0   5.8  Mon 4 pm   6.0  5.8        6.0 2am 5/02


&&

LAT...LON 4082 7430 4074 7432 4060 7452 4067 7452
      4075 7441 4081 7438


$$

Kruzdlo

007 
WGUS81 KPHI 020257
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1057 PM EDT Mon May 1 2023

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

  Passaic River At Chatham affecting Morris and Somerset Counties.

NJC027-035-020400-
/O.CAN.KPHI.FL.W.0002.000000T0000Z-230502T0257Z/
/CAMN4.1.ER.230501T0225Z.230501T0400Z.230503T0000Z.NO/
1057 PM EDT Mon May 1 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Passaic River At Chatham.

* ADDITIONAL DETAILS...
  - At 10:15 PM EDT Monday the stage was 5.9 feet.
  - Forecast...The river is expected to rise to a crest of 5.9
    feet just after midnight tonight. It is expected to hold just
    below flood stage.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (8 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Passaic River
Chatham         6.0   5.9  Mon 10 pm   5.9  5.7        5.9 2am 5/02


&&

LAT...LON 4082 7430 4074 7432 4060 7452 4067 7452
      4075 7441 4081 7438


$$

Brudy

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:34 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth	100 min
Apr 30, 8:55 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Apr 30, 10:14 PM EDT	Areal Flood Warning	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex	3 hr
Apr 30, 10:34 PM EDT	River Flood Warning	PHI	Burlington	13 hr
Apr 30, 10:37 PM EDT	River Flood Warning	PHI	Essex, Morris, Passaic	6 days
Apr 30, 10:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	50 min
Apr 30, 11:03 PM EDT	Areal Flood Advisory	PHI	Middlesex, Morris, Somerset	117 min
Apr 30, 11:11 PM EDT	River Flood Warning	PHI	Morris, Passaic	32 hr
Apr 30, 11:39 PM EDT	Areal Flood Warning	PHI	Hunterdon, Warren	5 hr
May 1, 12:15 AM EDT	Special Marine Warning	PHI		90 min
May 1, 12:17 AM EDT	Special Marine Warning	PHI		88 min
May 1, 12:28 AM EDT	River Flood Warning	PHI	Morris	48 hr
May 1, 12:47 AM EDT	Areal Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	10 hr
May 1, 1:40 AM EDT	Special Marine Warning	PHI		65 min
May 1, 1:41 AM EDT	Special Marine Warning	PHI		64 min
May 1, 2:33 AM EDT	Areal Flood Warning	PHI	Burlington	7 hr
May 1, 3:47 AM EDT	River Flood Warning	PHI	Essex, Morris, Passaic	4 days
May 1, 3:50 AM EDT	River Flood Warning	PHI	Somerset	27 hr
May 1, 7:46 AM EDT	Areal Flood Warning	PHI	Monmouth, Ocean	9 hr
May 1, 8:00 AM EDT	Areal Flood Warning	PHI	Cumberland, Gloucester, Salem	60 hr
May 1, 10:48 AM EDT	Areal Flood Warning	PHI	Somerset	6 hr
May 1, 12:18 PM EDT	River Flood Warning	PHI	Essex, Passaic	65 hr
May 1, 12:33 PM EDT	Areal Flood Warning	PHI	Atlantic, Camden, Gloucester	54 hr
May 1, 4:38 PM EDT	Special Weather Statement	PHI	Warren	37 min
May 1, 5:16 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	44 min

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.