Alert archive / New Jersey / River Flood Warnings in 2023

River Flood Warning 8, NWS Philadelphia/Mount Holly

May 1, 2023Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at May 1, 2023, 12:28 AM EDT for Morris County, New Jersey. It took effect at May 1, 2023, 3:00 AM EDT. It was in force for 45 hr.

The area

The outline as issued.

The facts

Issued: May 1, 2023, 12:28 AM EDT (04:28 UTC)
In effect from: May 1, 2023, 3:00 AM EDT
Expired: May 2, 2023, 11:59 PM EDT
In force: 45 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 103 km from the middle of the area, began a volume at 04:28 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 Rockaway River at Boonton below reservoir (BONN4). The gauge peaked at 6.11 ft at May 1, 2023, 4:00 PM EDT.

Action stage: 4.5 ft
Minor stage: 5 ft
Moderate stage: 7 ft
Major stage: 8 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01381000, 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.

924 
WGUS41 KPHI 010428
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1228 AM EDT Mon May 1 2023

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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 this afternoon by 1200 PM EDT.

&&


NJC027-011600-
/O.NEW.KPHI.FL.W.0008.230501T0700Z-230502T1200Z/
/BONN4.1.ER.230501T1800Z.230501T1800Z.230502T0000Z.NO/
1228 AM EDT Mon May 1 2023

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

* WHAT...Minor flooding is forecast.

* WHERE...Rockaway River At Boonton Below Resvr.

* WHEN...Until tomorrow morning.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 11:00 PM EDT Sunday the stage was 4.8 feet.
  - Forecast...The river is expected to rise to a crest of 5.0
    feet this afternoon. It will then fall below flood stage this
    evening.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    5.0 feet on 12/01/2020.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   4.8  Sun 11 p   4.9  4.4        5.0 2pm 5/01


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

AAD

6 follow-up statements

334 
WGUS81 KPHI 011555
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1155 AM EDT Mon May 1 2023

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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.

&&


NJC027-020400-
/O.CON.KPHI.FL.W.0008.000000T0000Z-230502T1200Z/
/BONN4.1.ER.230501T0452Z.230501T1800Z.230503T1800Z.NO/
1155 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...Rockaway River At Boonton Below Resvr.

* WHEN...Until tomorrow morning.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 11:00 AM EDT Monday the stage was 5.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 11:00 AM EDT Monday was 5.9 feet.
  - Forecast...The river is expected to rise to a crest of 6.2
    feet this afternoon. It will then fall below flood stage
    early Wednesday afternoon.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.2 feet on 04/02/1993.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   5.9  Mon 11 a   5.6  5.0        6.2 2pm 5/01


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

Kruzdlo

191 
WGUS81 KPHI 012057
FLSPHI

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

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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.

&&


NJC027-020900-
/O.CON.KPHI.FL.W.0008.000000T0000Z-230502T1200Z/
/BONN4.1.ER.230501T0452Z.230501T2000Z.230503T1800Z.NO/
457 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...Rockaway River At Boonton Below Resvr.

* WHEN...Until tomorrow morning.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 4:00 PM EDT Monday the stage was 6.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 4:00 PM EDT Monday was 6.1 feet.
  - Forecast...The river is expected to fall below flood stage
    early Wednesday afternoon and continue falling to 4.7 feet
    early Thursday afternoon.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.2 feet on 08/23/2021.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   6.1  Mon 4 pm   5.5  5.0         Near crest   


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

Kruzdlo

561 
WGUS81 KPHI 020844
FLSPHI

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

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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 afternoon by 500 PM EDT.

&&


NJC027-022100-
/O.EXT.KPHI.FL.W.0008.000000T0000Z-230502T2100Z/
/BONN4.1.ER.230501T0452Z.230501T2000Z.230503T1800Z.NO/
444 AM EDT Tue May 2 2023

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

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

* WHERE...Rockaway River At Boonton Below Resvr.

* WHEN...Until late this afternoon.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 4:00 AM EDT Tuesday the stage was 5.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 5:00 AM EDT Tuesday was 6.1 feet.
  - Forecast...The river is expected to fall below flood stage
    early Wednesday morning and continue falling to 4.6 feet
    Thursday afternoon.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.2 feet on 08/23/2021.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   5.7 Tue 4 am    5.1  4.8      Crested & Falling


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

Brudy

592 
WGUS81 KPHI 021409
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1009 AM EDT Tue May 2 2023

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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 this afternoon by 500 PM EDT.

&&


NJC027-022100-
/O.CON.KPHI.FL.W.0008.000000T0000Z-230502T2100Z/
/BONN4.1.ER.230501T0452Z.230501T2000Z.230503T0000Z.NO/
1009 AM EDT Tue May 2 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THIS AFTERNOON...

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

* WHERE...Rockaway River At Boonton Below Resvr.

* WHEN...Until late this afternoon.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 9:00 AM EDT Tuesday the stage was 5.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:00 AM EDT Tuesday was 6.1 feet.
  - Forecast...The river is expected to fall below flood stage
    this evening and continue falling to 4.5 feet Friday morning.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    5.5 feet on 03/30/1994.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   5.4  Tue 9 am   4.8  4.6          Crested   


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

Kruzdlo

121 
WGUS81 KPHI 022037
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
437 PM EDT Tue May 2 2023

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

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 late tonight by 1200 AM EDT.

&&


NJC027-030400-
/O.EXT.KPHI.FL.W.0008.000000T0000Z-230503T0400Z/
/BONN4.1.ER.230501T0452Z.230501T2000Z.230503T0300Z.NO/
437 PM EDT Tue May 2 2023

...FLOOD WARNING NOW IN EFFECT UNTIL JUST AFTER MIDNIGHT TONIGHT...

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

* WHERE...Rockaway River At Boonton Below Resvr.

* WHEN...Until just after midnight tonight.

* IMPACTS...At 6.0 feet, Flooding occurs on Vail Road in Montville. 
  The Road heading into Parsippany is subject to closures.

* ADDITIONAL DETAILS...
  - At 4:00 PM EDT Tuesday the stage was 5.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 4:00 PM EDT Tuesday was 6.1 feet.
  - Forecast...The river is expected to fall below flood stage
    late this evening and continue falling to 4.4 feet early
    Friday afternoon.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    5.3 feet on 03/22/2003.
  - http://www.weather.gov/safety/flood

&&

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

Rockaway River
Boonton Below R 5.0   5.2  Tue 4 pm   4.7  4.6         MSG  unknown


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

Staarmann

035 
WGUS81 KPHI 030359
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1159 PM EDT Tue May 2 2023

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

  Rockaway River At Boonton Below Resvr affecting Morris County.

NJC027-030500-
/O.CAN.KPHI.FL.W.0008.000000T0000Z-230503T0359Z/
/BONN4.1.ER.230501T0452Z.230501T2000Z.230503T0300Z.NO/
1159 PM EDT Tue May 2 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Rockaway River At Boonton Below Resvr.

* ADDITIONAL DETAILS...
  - At 11:00 PM EDT Tuesday the stage was 4.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 11:00 PM EDT Tuesday was 6.1 feet.
  - Forecast...The river is expected to remain below flood stage
    and continue falling to 4.4 feet early Friday afternoon.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (2 am)        Crest
Location        Stg   Stg Day/Time    Thu  Fri        Stg Time Date

Rockaway River
Boonton Below R 5.0   4.9 Tue 11 pm  4.5  4.4         MSG  unknown   


&&

LAT...LON 4087 7443 4092 7438 4087 7430 4082 7436


$$

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, 10:31 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, 11:11 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, 12:47 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.