Alert archive / New Jersey / River Flood Warnings in 2021
River Flood Warning 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Aug 23, 2021, 2:09 AM EDT for Morris County, Passaic County, New Jersey. It was in force for 17 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2021, 2:09 AM EDT (06:09 UTC)
- Expired
- Aug 23, 2021, 7:04 PM EDT
- In force
- 17 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Moderate
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 06:09 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 Aug 23, 2021, 5:00 AM 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.
579
WGUS41 KPHI 230609
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
209 AM EDT Mon Aug 23 2021
...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.
For the Pequannock River, including Macopin Dam, Moderate 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.
NJC027-031-231815-
/O.NEW.KPHI.FL.W.0014.210823T0609Z-210824T2100Z/
/MCPN4.2.ER.210823T0553Z.210823T1800Z.210824T1500Z.NO/
209 AM EDT Mon Aug 23 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for
the Pequannock River Below Macopin Dam.
* From early this morning to Tuesday afternoon.
* At 1:55 AM EDT Monday the river level was 5.5 feet.
* Flood stage is 5.5 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Forecast...The river is expected to rise to a crest of 6.7 feet
this afternoon. It should then fall back below flood stage late
Tuesday morning.
* Impact...At 5.5 feet, road closures begin in both Butler and
Bloomingdale due to flooding.
* Impact...At 6.5 feet, Main Street 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.
* Flood History...This crest compares to a previous crest of 6.7
feet on 10/20/1996.
&&
Fld Observed Forecasts (2 am EDT)
Location Stg Stg Day/Time Tue Wed Thu
Pequannock River
Macopin Dam 5.5 5.5 Mon 1 am EDT 6.2 4.7 MSG
&&
LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
4099 7441 4104 7438
$$
Iovino4 follow-up statements
166
WGUS81 KPHI 230815
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
415 AM EDT Mon Aug 23 2021
...The Flood Warning is extended for the following rivers in New
Jersey...
Pequannock River Below Macopin Dam affecting Morris and Passaic
Counties.
For the Pequannock River, including Macopin Dam, moderate flooding
is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/phi.
NJC027-031-232015-
/O.EXT.KPHI.FL.W.0014.000000T0000Z-210825T0200Z/
/MCPN4.2.ER.210823T0553Z.210823T1800Z.210824T2000Z.NO/
415 AM EDT Mon Aug 23 2021
...The Flood Warning is now in effect until late tomorrow evening...
The Flood Warning continues for
the Pequannock River Below Macopin Dam.
* Until Tuesday evening.
* At 3:55 AM EDT Monday the river level was 5.8 feet.
* Flood stage is 5.5 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Forecast...The river is expected to rise to a crest of 6.5 feet
this afternoon. It should then fall back below flood stage on
Tuesday afternoon.
* Impact...At 5.5 feet, road closures begin in Butler and
Bloomingdale due to flooding.
* Impact...At 6.5 feet, Main Street in Butler and Bloomingdale
floods. Several commercial properties are also flooded. The
Hamburg Turnpike experiences significant flooding. Flooding
expands to the east side of Bloomingdale. Sloan Park is flooded.
* Flood History...This crest compares to a previous crest of 6.6
feet on 03/14/2010.
&&
Fld Observed Forecasts (2 am EDT)
Location Stg Stg Day/Time Tue Wed Thu
Pequannock River
Macopin Dam 5.5 5.8 Mon 3 am EDT 6.1 5.0 3.2
&&
LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
4099 7441 4104 7438
$$
Iovino833
WGUS81 KPHI 231512
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
1112 AM EDT Mon Aug 23 2021
...The Flood Warning continues for the following rivers in New
Jersey...
Pequannock River Below Macopin Dam affecting Morris and Passaic
Counties.
For the Pequannock River...including Macopin Dam...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.
NJC027-031-240315-
/O.CON.KPHI.FL.W.0014.000000T0000Z-210825T0200Z/
/MCPN4.1.ER.210823T0553Z.210823T0945Z.210823T2100Z.NO/
1112 AM EDT Mon Aug 23 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Pequannock River Below Macopin Dam.
* Until Tuesday evening.
* At 10:55 AM EDT Monday the stage was 5.7 feet.
* Flood stage is 5.5 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 10:55 AM EDT Monday was 5.9 feet.
* Forecast...The river is expected to fall below flood stage late
this afternoon and continue falling to 2.6 feet Thursday morning.
* Impact...At 5.5 feet, Road closures begin in both Butler and
Bloomingdale due to flooding.
* Impact...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.
* Flood History...This crest compares to a previous crest of 5.7
feet on 04/17/2011.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Pequannock River
Macopin Dam 5.5 5.7 Mon 10 am ED 4.9 3.2 MSG
&&
LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
4099 7441 4104 7438
$$
Kruzdlo281
WGUS81 KPHI 232000
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
400 PM EDT Mon Aug 23 2021
...The Flood Warning continues for the following rivers in New
Jersey...
Pequannock River Below Macopin Dam affecting Morris and Passaic
Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov/phi.
NJC027-031-240800-
/O.CON.KPHI.FL.W.0014.000000T0000Z-210825T0200Z/
/MCPN4.1.ER.210823T0553Z.210823T0945Z.210823T2117Z.NO/
400 PM EDT Mon Aug 23 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Pequannock River Below Macopin Dam.
* Until Tuesday evening.
* At 3:40 PM EDT Monday the stage was 5.6 feet.
* Flood stage is 5.5 feet.
* Minor flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:40 PM EDT Monday was 5.9 feet.
* Forecast...The river is expected to fall below flood stage late
this afternoon and continue falling to 2.2 feet early Thursday
afternoon.
* Impact...At 5.5 feet, Road closures begin in both Butler and
Bloomingdale due to flooding.
* Impact...At 6.5 feet, Both Main Streets in Butler and Bloomingdale
flood. Several commercial properties are also flooded. The Hamburg
Turnpike experiences significant flooding. Flooding expands to the
east side of Bloomingdale. Sloan Park is flooded.
* Flood History...This crest compares to a previous crest of 5.6
feet on 06/01/2003.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Pequannock River
Macopin Dam 5.5 5.6 Mon 3 pm EDT 4.7 2.8 2.2
&&
LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
4099 7441 4104 7438
$$
Kruzdlo236
WGUS81 KPHI 232304
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
704 PM EDT Mon Aug 23 2021
...The Flood Warning is cancelled for the following rivers in New
Jersey...
Pequannock River Below Macopin Dam affecting Morris and Passaic
Counties.
NJC027-031-240015-
/O.CAN.KPHI.FL.W.0014.000000T0000Z-210823T2304Z/
/MCPN4.1.ER.210823T0553Z.210823T0945Z.210823T2121Z.NO/
704 PM EDT Mon Aug 23 2021
...The Flood Warning for the Pequannock River Below Macopin Dam has
been cancelled...
The Flood Warning is cancelled for
the Pequannock River Below Macopin Dam.
* At 6:40 PM EDT Monday the stage was 5.4 feet.
* Flood stage is 5.5 feet.
* Forecast...The river is expected to fall to 2.2 feet early
Thursday afternoon.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Tue Wed Thu
Pequannock River
Macopin Dam 5.5 5.4 Mon 6 pm EDT 4.4 2.6 MSG
&&
LAT...LON 4101 7430 4101 7428 4097 7430 4097 7433
4099 7441 4104 7438
$$
DealThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 8:11 PM EDT | Areal Flood Advisory | PHI | Warren | 6 hr |
| Aug 22, 8:47 PM EDT | Flash Flood Warning | PHI | Sussex, Warren | 6 hr |
| Aug 22, 11:27 PM EDT | Areal Flood Warning | PHI | Middlesex | 29 hr |
| Aug 23, 3:25 AM EDT | Areal Flood Warning | PHI | Morris | 8 hr |
| Aug 23, 4:10 AM EDT | River Flood Warning | PHI | Morris | 41 hr |
| Aug 23, 5:07 AM EDT | Areal Flood Warning | PHI | Warren | 21 hr |
| Aug 23, 5:22 AM EDT | Areal Flood Warning | PHI | Somerset | 9 hr |
| Aug 23, 5:44 AM EDT | Areal Flood Warning | PHI | Hunterdon | 7 hr |
| Aug 23, 7:20 AM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 7 hr |
| Aug 23, 7:47 AM EDT | River Flood Warning | PHI | Morris, Passaic | 13 hr |
| Aug 23, 8:36 AM EDT | Areal Flood Warning | PHI | Somerset | 9 hr |
| Aug 23, 8:42 AM EDT | River Flood Warning | PHI | Middlesex, Somerset | 21 hr |
| Aug 23, 11:22 AM EDT | River Flood Warning | PHI | Middlesex, Somerset | 16 hr |
| Aug 23, 11:32 AM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 5 days |
| Aug 23, 11:58 AM EDT | River Flood Warning | PHI | Somerset | 15 hr |
| Aug 23, 12:19 PM EDT | River Flood Warning | PHI | Burlington | 33 hr |
| Aug 23, 12:51 PM EDT | Coastal Flood Statement | PHI | Ocean | 3 hr |
| Aug 23, 2:26 PM EDT | Areal Flood Warning | PHI | Sussex | 14 hr |
| Aug 23, 2:26 PM EDT | Special Weather Statement | PHI | Ocean | 49 min |
| Aug 23, 3:12 PM EDT | Special Weather Statement | PHI | Ocean | 33 min |
| Aug 23, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 45 min |
| Aug 23, 3:18 PM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 23, 3:38 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 48 hr |
| Aug 23, 4:47 PM EDT | Special Weather Statement | PHI | Atlantic | 28 min |
| Aug 23, 4:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| Aug 23, 5:13 PM EDT | Special Weather Statement | PHI | Camden | 32 min |
| Aug 23, 5:39 PM EDT | Special Marine Warning | PHI | 33 min | |
| Aug 23, 6:46 PM EDT | Special Marine Warning | PHI | 64 min |
Nearby
River Flood Warnings in New Jersey, 2021Every river flood warning in 2021
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.