Alert archive / New York / River Flood Warnings in 2021
River Flood Warning 6, NWS New York, NY
NWS New York, NY issued this river flood warning at Sep 1, 2021, 4:43 PM EDT for Orange County, Rockland County, New York; Bergen County, Passaic County, New Jersey. It took effect at Sep 2, 2021, 1:23 AM EDT. It was in force for 35 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2021, 4:43 PM EDT (20:43 UTC)
- In effect from
- Sep 2, 2021, 1:23 AM EDT
- Expired
- Sep 3, 2021, 11:53 AM EDT
- In force
- 35 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Bergen County, NJ, Passaic County, NJ, Orange County, NY, Rockland County, NY
The radar
The Brookhaven radar (KOKX), 115 km from the middle of the area, began a volume at 20:44 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 Ramapo River at Mahwah (MAWN4). The gauge peaked at 10.46 ft at Sep 2, 2021, 3:00 AM EDT.
- Action stage
- 7.5 ft
- Minor stage
- 8 ft
- Moderate stage
- 9 ft
- Major stage
- 12 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01387500, 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.
005
WGUS41 KOKX 012043
FLWOKX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service New York NY
443 PM EDT Wed Sep 1 2021
...The National Weather Service in New York NY has issued a Flood
Warning for the following rivers in New Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Minor flooding is forecast.
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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 445 AM EDT.
&&
NJC003-031-NYC071-087-020845-
/O.NEW.KOKX.FL.W.0006.210902T0700Z-210903T1200Z/
/MAWN4.1.ER.210902T0700Z.210902T1200Z.210903T0600Z.NO/
443 PM EDT Wed Sep 1 2021
The National Weather Service in Upton has issued a
* Flood Warning for
the Ramapo River near Mahwah.
* From late tonight to Friday morning.
* At 3:30 PM EDT Wednesday the stage was 4.0 feet.
* Flood stage is 8.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
tonight to a crest of 8.5 feet tomorrow morning. It will then fall
below flood stage early Friday morning.
* Impact...At 8.0 feet, Minor flooding along Route 202.
* Impact...At 9.0 feet, State Route 202 floods downstream. Moderate
flooding along Route 202 and Route 17. Water into backyards. Minor
flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 8.5
feet on 07/14/1996.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Thu Fri Sat
Ramapo River
Mahwah 8.0 4.0 Wed 3 pm EDT 8.5 7.2 6.1
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
Fig7 follow-up statements
298
WGUS81 KOKX 020019
FLSOKX
Flood Statement
National Weather Service New York NY
819 PM EDT Wed Sep 1 2021
...The Flood Warning continues for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued Thursday morning at 830 AM EDT.
&&
NJC003-031-NYC071-087-021230-
/O.CON.KOKX.FL.W.0006.210902T0700Z-210903T1200Z/
/MAWN4.1.ER.210902T0700Z.210902T1200Z.210903T0600Z.NO/
819 PM EDT Wed Sep 1 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Ramapo River near Mahwah.
* From late tonight to Friday morning.
* At 7:30 PM EDT Wednesday the stage was 4.6 feet.
* Flood stage is 8.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
tonight to a crest of 8.5 feet tomorrow morning. It will then fall
below flood stage early Friday morning.
* Impact...At 8.0 feet, Minor flooding along Route 202.
* Flood History...This crest compares to a previous crest of 8.5
feet on 07/14/1996.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Thu Fri Sat
Ramapo River
Mahwah 8.0 4.6 Wed 7 pm EDT 8.4 7.0 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
Fig512
WGUS81 KOKX 020150
FLSOKX
Flood Statement
National Weather Service New York NY
950 PM EDT Wed Sep 1 2021
...The Flood Warning continues for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Caution is urged when walking near riverbanks.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued Thursday morning at 1000 AM EDT.
&&
NJC003-031-NYC071-087-021400-
/O.CON.KOKX.FL.W.0006.210902T0700Z-210903T1200Z/
/MAWN4.1.ER.210902T0700Z.210902T1200Z.210903T0600Z.NO/
950 PM EDT Wed Sep 1 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Ramapo River near Mahwah.
* From late tonight to Friday morning.
* At 9:30 PM EDT Wednesday the stage was 7.3 feet.
* Flood stage is 8.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
tonight to a crest of 8.5 feet tomorrow morning. It will then fall
below flood stage early Friday morning.
* Impact...At 8.0 feet, Minor flooding along Route 202.
* Impact...At 9.0 feet, State Route 202 floods downstream. Moderate
flooding along Route 202 and Route 17. Water into backyards. Minor
flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 8.5
feet on 07/14/1996.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Thu Fri Sat
Ramapo River
Mahwah 8.0 7.3 Wed 9 pm EDT 8.4 7.0 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
Fig081
WGUS41 KOKX 020523
FLWOKX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service New York NY
123 AM EDT Thu Sep 2 2021
...Forecast flooding changed from Minor to Moderate severity and
increased in duration for the following rivers in New Jersey...New
York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Moderate flooding is
forecast.
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.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Flooding is occurring or is imminent. Most flood related deaths
occur in automobiles. Do not attempt to cross water covered bridges,
dips, or low water crossings. Never try to cross a flowing stream,
even a small one, on foot. To escape rising water find another route
over higher ground.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 130 PM EDT.
&&
NJC003-031-NYC071-087-021730-
/O.EXT.KOKX.FL.W.0006.210902T0523Z-210903T1930Z/
/MAWN4.2.ER.210902T0158Z.210902T1200Z.210903T1330Z.NO/
123 AM EDT Thu Sep 2 2021
...Forecast flooding increased from Minor to Moderate severity and
increased in duration until tomorrow afternoon...
The Flood Warning continues for
the Ramapo River near Mahwah.
* From early this morning to tomorrow afternoon.
* At 12:30 AM EDT Thursday the stage was 9.9 feet.
* Flood stage is 8.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 12:30 AM EDT Thursday was 9.9 feet.
* Forecast...The river is expected to rise to a crest of 11.1 feet
this morning. It will then fall below flood stage late tomorrow
morning.
* Impact...At 12.0 feet, Major flooding along Route 202 and Route 17
intersection. Road closed. Flooding along Riverview Drive and
along Halifax Road and Bridle Path Lane. Flooding on Brakeshoe
Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 11.2
feet on 03/07/2011.
&&
Fld Observed Forecasts (2 am EDT)
Location Stg Stg Day/Time Fri Sat Sun
Ramapo River
Mahwah 8.0 9.9 Thu 12 am ED 8.6 7.1 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
JM228
WGUS81 KOKX 021726
FLSOKX
Flood Statement
National Weather Service New York NY
126 PM EDT Thu Sep 2 2021
...The Flood Warning is extended for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Moderate flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Caution is urged when walking near riverbanks.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 130 AM EDT.
&&
NJC003-031-NYC071-087-030530-
/O.EXT.KOKX.FL.W.0006.000000T0000Z-210903T2200Z/
/MAWN4.2.ER.210902T0158Z.210902T0800Z.210903T1600Z.NO/
126 PM EDT Thu Sep 2 2021
...The Flood Warning is now in effect until tomorrow evening...
The Flood Warning continues for
the Ramapo River near Mahwah.
* Until tomorrow evening.
* At 12:30 PM EDT Thursday the stage was 10.1 feet.
* Flood stage is 8.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 12:30 PM EDT Thursday was 10.5 feet.
* Forecast...The river is expected to fall below flood stage early
tomorrow afternoon and continue falling to 5.0 feet Sunday morning.
* Impact...At 9.0 feet, State Route 202 floods downstream. Moderate
flooding along Route 202 and Route 17. Water into backyards. Minor
flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 10.0
feet on 04/05/1987.
&&
Fld Observed Forecasts (2 pm EDT)
Location Stg Stg Day/Time Fri Sat Sun
Ramapo River
Mahwah 8.0 10.1 Thu 12 pm ED 7.8 6.3 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
JC902
WGUS81 KOKX 030453
FLSOKX
Flood Statement
National Weather Service New York NY
1253 AM EDT Fri Sep 3 2021
...The Flood Warning continues for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Minor flooding is forecast.
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.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Caution is urged when walking near riverbanks.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 1215 PM EDT.
&&
NJC003-031-NYC071-087-031615-
/O.EXT.KOKX.FL.W.0006.000000T0000Z-210903T1612Z/
/MAWN4.2.ER.210902T0158Z.210902T0800Z.210903T1012Z.NO/
1253 AM EDT Fri Sep 3 2021
...The Flood Warning is now in effect until this afternoon...
The Flood Warning continues for
the Ramapo River near Mahwah.
* Until this afternoon.
* At 12:30 AM EDT Friday the stage was 8.9 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 12:30 AM EDT Friday was 10.5 feet.
* Forecast...The river is expected to fall below flood stage this
morning and continue falling to 4.6 feet Sunday evening.
* Impact...At 9.0 feet, State Route 202 floods downstream. Moderate
flooding along Route 202 and Route 17. Water into backyards. Minor
flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 8.9
feet on 11/12/1995.
&&
Fld Observed Forecasts (2 am EDT)
Location Stg Stg Day/Time Sat Sun Mon
Ramapo River
Mahwah 8.0 8.9 Fri 12 am ED 5.2 4.7 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$
NV417
WGUS81 KOKX 031301
FLSOKX
Flood Statement
National Weather Service New York NY
901 AM EDT Fri Sep 3 2021
...The Flood Warning continues for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
For the Ramapo River...including Mahwah...Minor flooding is forecast.
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.
Caution is urged when walking near riverbanks.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 1215 PM EDT.
&&
NJC003-031-NYC071-087-031615-
/O.CON.KOKX.FL.W.0006.000000T0000Z-210903T1612Z/
/MAWN4.1.ER.210902T0158Z.210902T0800Z.210903T1012Z.NO/
901 AM EDT Fri Sep 3 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Ramapo River near Mahwah.
* Until this afternoon.
* At 7:30 AM EDT Friday the stage was 8.3 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 36 hours ending
at 8:30 AM EDT Friday was 10.5 feet.
* Forecast...The river is expected to fall below flood stage this
morning and continue falling to 4.6 feet Sunday evening.
* Impact...At 9.0 feet, State Route 202 floods downstream. Moderate
flooding along Route 202 and Route 17. Water into backyards. Minor
flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
* Flood History...This crest compares to a previous crest of 8.9
feet on 11/12/1995.
&&
Fld Observed Forecasts (8 am EDT)
Location Stg Stg Day/Time Sat Sun Mon
Ramapo River
Mahwah 8.0 8.9 Fri 12 am ED 4.7 4.6 MSG
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$334
WGUS81 KOKX 031553
FLSOKX
Flood Statement
National Weather Service New York NY
1153 AM EDT Fri Sep 3 2021
...The Flood Warning is cancelled for the following rivers in New
Jersey...New York...
Ramapo River near Mahwah affecting Orange, Rockland, Bergen and
Passaic Counties.
NJC003-031-NYC071-087-031700-
/O.CAN.KOKX.FL.W.0006.000000T0000Z-210903T1553Z/
/MAWN4.1.ER.210902T0158Z.210902T0800Z.210903T1012Z.NO/
1153 AM EDT Fri Sep 3 2021
...The Flood Warning for the Ramapo River near Mahwah has been
cancelled...
The Flood Warning is cancelled for
the Ramapo River near Mahwah.
* At 11:00 AM EDT Friday the stage was 7.9 feet.
* Flood stage is 8.0 feet.
* Forecast...The river has fallen below flood stage and will
continue falling to 4.6 feet Sunday evening.
&&
LAT...LON 4096 7425 4102 7430 4131 7417 4128 7411
4108 7413
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 4:05 AM EDT | Gale Warning | OKX | 31 hr | |
| Sep 1, 5:24 AM EDT | Coastal Flood Advisory | OKX | Suffolk | 17 hr |
| Sep 1, 9:36 AM EDT | Special Marine Warning | OKX | 54 min | |
| Sep 1, 10:18 AM EDT | Special Marine Warning | OKX | 87 min | |
| Sep 1, 10:30 AM EDT | Special Marine Warning | OKX | 60 min | |
| Sep 1, 11:45 AM EDT | Special Marine Warning | OKX | 90 min | |
| Sep 1, 1:15 PM EDT | Special Marine Warning | OKX | 90 min | |
| Sep 1, 1:40 PM EDT | Areal Flood Advisory | OKX | Orange, Putnam | 114 min |
| Sep 1, 2:43 PM EDT | Special Marine Warning | OKX | 62 min | |
| Sep 1, 3:34 PM EDT | Flash Flood Warning | OKX | Orange | 8 hr |
| Sep 1, 5:54 PM EDT | Flash Flood Warning | OKX | Richmond | 6 hr |
| Sep 1, 6:51 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Putnam, Queens and 3 more | 5 hr |
| Sep 1, 4:41 PM EDT | River Flood Warning | OKX | Bergen | 29 hr |
| Sep 1, 7:29 PM EDT | Severe Thunderstorm Warning | OKX | Union | 46 min |
Nearby
River Flood Warnings in New York, 2021River 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.