Alert archive / Delaware / River Flood Warnings in 2021

River Flood Warning 51, NWS Philadelphia/Mount Holly

September 1, 2021New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Sep 1, 2021, 6:08 PM EDT for New Castle County, Delaware. It took effect at Sep 1, 2021, 6:58 PM EDT. It was in force for 17 hr.

The area

The outline as issued.

The facts

Issued: Sep 1, 2021, 6:08 PM EDT (22:08 UTC)
In effect from: Sep 1, 2021, 6:58 PM EDT
Expired: Sep 2, 2021, 12:10 PM EDT
In force: 17 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County New Castle County, DE

The radar

The Dover AFB radar (KDOX), 100 km from the middle of the area, began a volume at 22:08 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 White Clay Creek near Newark (DPKD1). The gauge peaked at 15.72 ft at Sep 2, 2021, 6:00 AM EDT.

Action stage: 11 ft
Minor stage: 13 ft
Moderate stage: 15 ft
Major stage: 16.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01479000, 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.

997 
WGUS41 KPHI 012208
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
608 PM EDT Wed Sep 1 2021

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

  White Clay Creek Near Newark affecting New Castle County.

For the White Clay Creek...including Newark...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.

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


DEC003-020315-
/O.NEW.KPHI.FL.W.0051.210901T2258Z-210902T0311Z/
/DPKD1.1.ER.210901T2258Z.210902T0000Z.210902T0110Z.NO/
608 PM EDT Wed Sep 1 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the White Clay Creek Near Newark.
* For this evening.
* At 5:15 PM EDT Wednesday the stage was 9.2 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  evening to a crest of 14.3 feet this evening. It will then fall 
  below flood stage late this evening.
* Impact...At 11.0 feet, Flooding begins into adjacent open fields.
* Impact...At 13.3 feet, Delaware Route 7, Stanton Christiana Road, 
  begins to flood.
* Impact...At 13.5 feet, Businesses on Delaware Route 7 begin to 
  flood.
* Flood History...This crest compares to a previous crest of 14.3 
  feet on 02/22/2003.

&&


                Fld   Observed           Forecasts (6 pm EDT)     
Location        Stg   Stg   Day/Time     Thu   Fri   Sat          

White Clay Creek
Newark          13.0  9.2   Wed 5 pm EDT 6.3   MSG   MSG          





&&

LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574

$$

NC

3 follow-up statements

691 
WGUS81 KPHI 020141
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
941 PM EDT Wed Sep 1 2021

...The Flood Warning is extended for the following rivers in 
Delaware...

  White Clay Creek Near Newark affecting New Castle County.

For the White Clay Creek...including Newark...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.

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


DEC003-020745-
/O.EXT.KPHI.FL.W.0051.000000T0000Z-210902T0731Z/
/DPKD1.1.ER.210901T2329Z.210902T0200Z.210902T0331Z.NO/
941 PM EDT Wed Sep 1 2021

...The Flood Warning is now in effect until late tonight...

The Flood Warning continues for
  the White Clay Creek Near Newark.
* Until late tonight.
* At 9:15 PM EDT Wednesday the stage was 14.3 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 9:15 PM EDT Wednesday was 14.3 feet.
* Forecast...The river is expected to rise to a crest of 14.5 feet 
  late this evening. It will then fall below flood stage late this 
  evening.
* Impact...At 11.0 feet, Flooding begins into adjacent open fields.
* Impact...At 13.3 feet, Delaware Route 7, Stanton Christiana Road, 
  begins to flood.
* Impact...At 13.5 feet, Businesses on Delaware Route 7 begin to 
  flood.
* Flood History...This crest compares to a previous crest of 14.6 
  feet on 08/08/2020.

&&


                Fld   Observed           Forecasts (unknown time) 
Location        Stg   Stg   Day/Time     d1    d2    d3           

White Clay Creek
Newark          13.0  14.3  Wed 9 pm EDT MSG   MSG   MSG          





&&

LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574

$$

NC

299 
WGUS41 KPHI 020704
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
304 AM EDT Thu Sep 2 2021

...Forecast flooding changed from Minor to Moderate severity and 
increased in duration for the following rivers in Delaware...

  White Clay Creek Near Newark affecting New Castle County.

For the White Clay Creek...including Newark...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.

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


DEC003-021800-
/O.EXT.KPHI.FL.W.0051.000000T0000Z-210902T1758Z/
/DPKD1.2.ER.210901T2329Z.210902T0800Z.210902T1158Z.NO/
304 AM EDT Thu Sep 2 2021

...Forecast flooding increased from Minor to Moderate severity and 
increased in duration until this afternoon...

The Flood Warning continues for
  the White Clay Creek Near Newark.
* Until this afternoon.
* At 2:16 AM EDT Thursday the stage was 14.6 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 2:16 AM EDT Thursday was 14.7 feet.
* Forecast...The river is expected to rise to 15.6 feet early this 
  morning. The river is then expected to fall below flood stage this 
  morning.
* Impact...At 11.0 feet, Flooding begins into adjacent open fields.
* Impact...At 13.3 feet, Delaware Route 7, Stanton Christiana Road, 
  begins to flood.
* Impact...At 13.5 feet, Businesses on Delaware Route 7 begin to 
  flood.
* Flood History...This crest compares to a previous crest of 15.4 
  feet on 10/01/2010.

&&


                Fld   Observed           Forecasts (3 am EDT)     
Location        Stg   Stg   Day/Time     Fri   Sat   Sun          

White Clay Creek
Newark          13.0  14.6  Thu 2 am EDT 8.7   MSG   MSG          





&&

LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574

$$

Meola

499 
WGUS81 KPHI 021610
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1210 PM EDT Thu Sep 2 2021

...The Flood Warning is cancelled for the following rivers in 
Delaware...

  White Clay Creek Near Newark affecting New Castle County.

DEC003-021715-
/O.CAN.KPHI.FL.W.0051.000000T0000Z-210902T1610Z/
/DPKD1.2.ER.210901T2329Z.210902T1116Z.210902T1357Z.NO/
1210 PM EDT Thu Sep 2 2021

...The Flood Warning for the White Clay Creek Near Newark has been 
cancelled...

The Flood Warning is cancelled for
  the White Clay Creek Near Newark.
* At 11:15 AM EDT Thursday the stage was 9.5 feet.
* Flood stage is 13.0 feet.
* Forecast...The river is expected to fall to 7.0 feet late tomorrow 
  evening.

&&


                Fld   Observed           Forecasts (12 pm EDT)    
Location        Stg   Stg   Day/Time     Fri   Sat   Sun          

White Clay Creek
Newark          13.0  9.5   Thu 11 am ED 7.0   MSG   MSG          





&&

LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574

$$

Kruzdlo

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 6:19 AM EDT	Areal Flood Advisory	PHI	New Castle	116 min
Sep 1, 6:49 AM EDT	Flash Flood Warning	PHI	New Castle	86 min
Sep 1, 8:03 AM EDT	River Flood Warning	PHI	New Castle	4 hr
Sep 1, 2:53 PM EDT	Flash Flood Warning	PHI	New Castle	9 hr
Sep 1, 4:59 PM EDT	Tornado Warning	PHI	Kent, Sussex	46 min
Sep 1, 5:01 PM EDT	Tornado Warning	PHI	Kent, New Castle	44 min
Sep 1, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	44 min
Sep 1, 5:26 PM EDT	Flash Flood Warning	PHI	New Castle	9 hr
Sep 1, 5:35 PM EDT	Tornado Warning	PHI	Kent, New Castle	25 min
Sep 1, 6:03 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	42 min
Sep 1, 6:15 PM EDT	River Flood Warning	PHI	New Castle	9 hr
Sep 1, 6:24 PM EDT	Tornado Warning	PHI	New Castle	16 min
Sep 1, 6:38 PM EDT	River Flood Warning	PHI	New Castle	28 hr
Sep 1, 6:57 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	63 min
Sep 1, 7:44 PM EDT	River Flood Warning	PHI	New Castle	11 hr

Nearby

River Flood Warnings in Delaware, 2021 Every 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.