Alert archive / New Jersey / River Flood Warnings in 2023

River Flood Warning 5, NWS Philadelphia/Mount Holly

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

NWS Philadelphia/Mount Holly issued this river flood warning at Apr 30, 2023, 11:11 PM EDT for Morris County, Passaic County, New Jersey. It took effect at May 1, 2023, 4:00 AM EDT. It was in force for 28 hr.

The area

The outline as issued.

The facts

Issued: Apr 30, 2023, 11:11 PM EDT (03:11 UTC)
In effect from: May 1, 2023, 4:00 AM EDT
Expired: May 2, 2023, 7:35 AM EDT
In force: 28 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

Counties Morris County, NJ, Passaic County, NJ

The radar

The Philadelphia radar (KDIX), 117 km from the middle of the area, began a volume at 03:14 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 Pequannock River at Macopin (MCPN4). The gauge peaked at 5.81 ft at May 1, 2023, 12:00 PM EDT.

Action stage: 5 ft
Minor stage: 5.5 ft
Moderate stage: 6.5 ft
Major stage: 7.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01382500, 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.

776 
WGUS41 KPHI 010311
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1111 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...

  Pequannock River Below Macopin Dam affecting Morris and Passaic 
  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 afternoon by 1200 PM EDT.

&&


NJC027-031-011600-
/O.NEW.KPHI.FL.W.0005.230501T0800Z-230502T1200Z/
/MCPN4.1.ER.230501T1200Z.230501T1800Z.230502T0300Z.NO/
1111 PM EDT Sun Apr 30 2023

...FLOOD WARNING IN EFFECT FROM LATE TONIGHT TO TUESDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Pequannock River Below Macopin Dam.

* WHEN...From late tonight to Tuesday morning.

* IMPACTS...At 5.5 feet, Road closures begin in both Butler and 
  Bloomingdale due to flooding.
  At 6.5 feet, Both Main Streets in Butler and Bloomingdale flood. 
  Several commercial properties are also flooded. The Hamburg 
  Turnpike experiences significant flooding. Flooding expands to the 
  east side of Bloomingdale. Sloan Park is flooded.

* ADDITIONAL DETAILS...
  - At 10:55 PM EDT Sunday the stage was 5.4 feet.
  - Forecast...The river is expected to rise above flood stage
    overnight or early Monday morning to a crest of 5.6 feet
    early Monday afternoon. It will then fall below flood stage
    Monday night.
  - Flood stage is 5.5 feet.
  - Flood History...This crest compares to a previous crest of
    5.6 feet on 03/31/2010.
  - http://www.weather.gov/safety/flood

&&

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

Pequannock River
Macopin Dam     5.5   5.4  Sun 10 p   5.4  4.6        5.6 2pm 5/01


&&

LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
      4099 7441 4104 7438


$$

AAD

4 follow-up statements

525 
WGUS81 KPHI 011553
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1153 AM EDT Mon May 1 2023

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

  Pequannock River Below Macopin Dam affecting Morris and Passaic 
  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 late tonight by 1200 AM EDT.

&&


NJC027-031-020400-
/O.CON.KPHI.FL.W.0005.000000T0000Z-230502T1200Z/
/MCPN4.1.ER.230501T0337Z.230501T1300Z.230502T0300Z.NO/
1153 AM EDT Mon May 1 2023

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

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

* WHERE...Pequannock River Below Macopin Dam.

* WHEN...Until tomorrow morning.

* IMPACTS...At 5.5 feet, Road closures begin in both Butler and 
  Bloomingdale due to flooding.
  At 6.5 feet, Both Main Streets in Butler and Bloomingdale flood. 
  Several commercial properties are also flooded. The Hamburg 
  Turnpike experiences significant flooding. Flooding expands to the 
  east side of Bloomingdale. Sloan Park is flooded.

* ADDITIONAL DETAILS...
  - At 11:40 AM EDT Monday the stage was 5.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 11:40 AM EDT Monday was 5.9 feet.
  - Forecast...The river is cresting and will fall below flood
    stage late this evening.
  - Flood stage is 5.5 feet.
  - Flood History...This crest compares to a previous crest of
    5.8 feet on 12/12/2003.
  - http://www.weather.gov/safety/flood

&&

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

Pequannock River
Macopin Dam     5.5   5.8  Mon 11 a   5.1  4.4        Cresting    


&&

LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
      4099 7441 4104 7438


$$

Kruzdlo

905 
WGUS81 KPHI 012101
FLSPHI

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

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

  Pequannock River Below Macopin Dam affecting Morris and Passaic 
  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 late tonight by 500 AM EDT.

&&


NJC027-031-020915-
/O.CON.KPHI.FL.W.0005.000000T0000Z-230502T1200Z/
/MCPN4.1.ER.230501T0337Z.230501T1300Z.230502T0300Z.NO/
501 PM EDT Mon May 1 2023

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

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

* WHERE...Pequannock River Below Macopin Dam.

* WHEN...Until tomorrow morning.

* IMPACTS...At 5.5 feet, Road closures begin in both Butler and 
  Bloomingdale due to flooding.
  At 6.5 feet, Both Main Streets in Butler and Bloomingdale flood. 
  Several commercial properties are also flooded. The Hamburg 
  Turnpike experiences significant flooding. Flooding expands to the 
  east side of Bloomingdale. Sloan Park is flooded.

* ADDITIONAL DETAILS...
  - At 4:40 PM EDT Monday the stage was 5.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 4:40 PM EDT Monday was 5.9 feet.
  - Forecast...The river is expected to fall below flood stage
    late this evening and continue falling to 4.1 feet early
    Thursday afternoon.
  - Flood stage is 5.5 feet.
  - Flood History...This crest compares to a previous crest of
    5.8 feet on 12/12/2003.
  - http://www.weather.gov/safety/flood

&&

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

Pequannock River
Macopin Dam     5.5   5.7  Mon 4 pm   5.1  4.4      Crested & Falling


&&

LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
      4099 7441 4104 7438


$$

Kruzdlo

798 
WGUS81 KPHI 020910
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
510 AM EDT Tue May 2 2023

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

  Pequannock River Below Macopin Dam affecting Passaic and Morris 
  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 morning by 800 AM EDT.

&&


NJC027-031-021200-
/O.CON.KPHI.FL.W.0005.000000T0000Z-230502T1200Z/
/MCPN4.1.ER.230501T0337Z.230501T1300Z.230502T0300Z.NO/
510 AM EDT Tue May 2 2023

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

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

* WHERE...Pequannock River Below Macopin Dam.

* WHEN...Until this morning.

* IMPACTS...At 5.5 feet, Road closures begin in both Butler and 
  Bloomingdale due to flooding.
  At 6.5 feet, Both Main Streets in Butler and Bloomingdale flood. 
  Several commercial properties are also flooded. The Hamburg 
  Turnpike experiences significant flooding. Flooding expands to the 
  east side of Bloomingdale. Sloan Park is flooded.

* ADDITIONAL DETAILS...
  - At 4:55 AM EDT Tuesday the stage was 5.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 4:55 AM EDT Tuesday was 5.8 feet.
  - Forecast...The river is expected to fall below flood stage
    this morning and continue falling to 4.0 feet Thursday
    morning.
  - Flood stage is 5.5 feet.
  - Flood History...This crest compares to a previous crest of
    5.8 feet on 12/12/2003.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (8 am)        Crest
Location        Stg   Stg Day/Time    Wed  Thu        Stg Time Date

Pequannock River
Macopin Dam     5.5   5.5 Tue 4 am    4.7  4.0      Crested & Falling


&&

LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
      4099 7441 4104 7438


$$

Brudy

801 
WGUS81 KPHI 021135
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
735 AM EDT Tue May 2 2023

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

  Pequannock River Below Macopin Dam affecting Morris and Passaic 
  Counties.

NJC027-031-021245-
/O.CAN.KPHI.FL.W.0005.000000T0000Z-230502T1135Z/
/MCPN4.1.ER.230501T0337Z.230501T1300Z.230502T1120Z.NO/
735 AM EDT Tue May 2 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Pequannock River Below Macopin Dam.

* ADDITIONAL DETAILS...
  - At 7:25 AM EDT Tuesday the stage was 5.4 feet.
  - Forecast...The river is expected to fall to 3.9 feet early
    Friday morning.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (8 am)        Crest
Location        Stg   Stg Day/Time    Wed  Thu        Stg Time Date

Pequannock River
Macopin Dam     5.5   5.4  Tue 7 am   4.7  4.0          Crested   
 

&&

LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
      4099 7441 4104 7438


$$

Kruzdlo

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, 10:31 PM EDT	River Flood Warning	PHI	Morris, Somerset	24 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, 11:39 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.