Alert archive / Delaware / River Flood Warnings in 2021

River Flood Warning 27, NWS Philadelphia/Mount Holly

September 1, 2021New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Sep 1, 2021, 8:03 AM EDT for New Castle County, Delaware. It took effect at Sep 1, 2021, 8:10 AM EDT. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Sep 1, 2021, 8:03 AM EDT (12:03 UTC)
In effect from: Sep 1, 2021, 8:10 AM EDT
Expired: Sep 1, 2021, 12:22 PM EDT
In force: 4 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), 95 km from the middle of the area, began a volume at 12:07 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 Christina River at Coochs Bridge (CHBD1). The gauge peaked at 12.84 ft at Sep 1, 2021, 10:00 PM EDT.

Action stage: 9 ft
Minor stage: 11 ft
Moderate stage: 12 ft
Major stage: 13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01478000, 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.

122 
WGUS41 KPHI 011203
FLWPHI

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

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

  Christina River At Coochs Bridge affecting New Castle County.

For the Christina River...including Coochs Bridge...Minor flooding 
is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

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


DEC003-011415-
/O.NEW.KPHI.FL.W.0027.210901T1210Z-210901T1410Z/
/CHBD1.1.ER.210901T1255Z.210901T1300Z.210901T1310Z.NO/
803 AM EDT Wed Sep 1 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the Christina River At Coochs Bridge.
* For this morning.
* At 7:46 AM EDT Wednesday the stage was 9.3 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  morning to a crest of 11.1 feet this morning. It will then fall 
  below flood stage late this morning.
* Impact...At 9.0 feet, Flooding begins in fields and floodplain 
  adjacent to the river.
* Impact...At 11.0 feet, Flooding begins in the town of Christiana. 
  East Main Street (Del 7) begins to flood as does Water Street. 
  Meadow Road near New Castle Airport is subject to flooding. 
  Barksdale Road near Casho Mill Road is also subject to flooding as 
  are residential backyards.
* Impact...At 11.5 feet, Portions of Duross Heights near New Castle 
  Airport begin to flood including Don Avenue. Airport Road at the 
  New Castle Airport begins to flood as the Christina River backs up 
  the Nonesuch Creek. Walther Road in the Bear area also floods. 
  Flooding also occurs around Smalley's Pond Dam in Christiana.
* Flood History...This crest compares to a previous crest of 11.1 
  feet on 06/07/2003.

&&


               Fld   Observed           Forecasts (8 am EDT)     
Location       Stg   Stg   Day/Time     Thu   Fri   Sat          

Christina River
Coochs Bridge  11.0  9.3   Wed 7 am EDT 4.3   MSG   MSG          





&&

LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569

$$

NC

3 follow-up statements

110 
WGUS81 KPHI 011331
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
931 AM EDT Wed Sep 1 2021

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

  Christina River At Coochs Bridge affecting New Castle County.

For the Christina River...including Coochs Bridge...Minor flooding 
is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

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


DEC003-011515-
/O.EXT.KPHI.FL.W.0027.000000T0000Z-210901T1515Z/
/CHBD1.1.ER.210901T1249Z.210901T1400Z.210901T1412Z.NO/
931 AM EDT Wed Sep 1 2021

...The Flood Warning is now in effect until late this morning...

The Flood Warning continues for
  the Christina River At Coochs Bridge.
* Until this morning.
* At 9:15 AM EDT Wednesday the stage was 11.5 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 9:15 AM EDT Wednesday was 11.5 feet.
* Forecast...The river is expected to rise to a crest of 11.7 feet 
  this morning. It will then fall below flood stage late this 
  morning.
* Impact...At 9.0 feet, Flooding begins in fields and floodplain 
  adjacent to the river.
* Impact...At 11.0 feet, Flooding begins in the town of Christiana. 
  East Main Street (Del 7) begins to flood as does Water Street. 
  Meadow Road near New Castle Airport is subject to flooding. 
  Barksdale Road near Casho Mill Road is also subject to flooding as 
  are residential backyards.
* Impact...At 11.5 feet, Portions of Duross Heights near New Castle 
  Airport begin to flood including Don Avenue. Airport Road at the 
  New Castle Airport begins to flood as the Christina River backs up 
  the Nonesuch Creek. Walther Road in the Bear area also floods. 
  Flooding also occurs around Smalley's Pond Dam in Christiana.
* Flood History...This crest compares to a previous crest of 11.7 
  feet on 10/19/1996.

&&


               Fld   Observed           Forecasts (9 am EDT)     
Location       Stg   Stg   Day/Time     Thu   Fri   Sat          

Christina River
Coochs Bridge  11.0  11.5  Wed 9 am EDT 4.3   MSG   MSG          





&&

LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569

$$

NC

745 
WGUS81 KPHI 011504
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1104 AM EDT Wed Sep 1 2021

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

  Christina River At Coochs Bridge affecting New Castle County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

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


DEC003-011630-
/O.EXT.KPHI.FL.W.0027.000000T0000Z-210901T1630Z/
/CHBD1.1.ER.210901T1249Z.210901T1415Z.210901T1505Z.NO/
1104 AM EDT Wed Sep 1 2021

...The Flood Warning is now in effect until this afternoon...

The Flood Warning continues for
  the Christina River At Coochs Bridge.
* Until this afternoon.
* At 10:46 AM EDT Wednesday the stage was 11.8 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 10:46 AM EDT Wednesday was 11.8 feet.
* Forecast...The river is expected to fall below flood stage by 
  early afternoon.
* Impact...At 9.0 feet, Flooding begins in fields and floodplain 
  adjacent to the river.
* Impact...At 11.0 feet, Flooding begins in the town of Christiana. 
  East Main Street (Del 7) begins to flood as does Water Street. 
  Meadow Road near New Castle Airport is subject to flooding. 
  Barksdale Road near Casho Mill Road is also subject to flooding as 
  are residential backyards.
* Impact...At 11.5 feet, Portions of Duross Heights near New Castle 
  Airport begin to flood including Don Avenue. Airport Road at the 
  New Castle Airport begins to flood as the Christina River backs up 
  the Nonesuch Creek. Walther Road in the Bear area also floods. 
  Flooding also occurs around Smalley's Pond Dam in Christiana.
* Impact...At 12.0 feet, Significant flooding occurs on Meadow Road 
  in Christiana. Roads are closed. Homes are flooded. Salem Church 
  Road and Reybold Road floods in Christiana also flood and are 
  subject to closures. Residential backyards can flood in this area. 
  Flooding also occurs in Newark on West Chestnut Hill Road and 
  South College Avenue.
* Flood History...This crest compares to a previous crest of 11.8 
  feet on 01/19/1996.

&&


               Fld   Observed           Forecasts (11 am EDT)    
Location       Stg   Stg   Day/Time     Thu   Fri   Sat          

Christina River
Coochs Bridge  11.0  11.8  Wed 10 am ED 4.3   MSG   MSG          





&&

LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569

$$

NC

281 
WGUS81 KPHI 011622
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1222 PM EDT Wed Sep 1 2021

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

  Christina River At Coochs Bridge affecting New Castle County.

DEC003-011730-
/O.CAN.KPHI.FL.W.0027.000000T0000Z-210901T1622Z/
/CHBD1.1.ER.210901T1249Z.210901T1430Z.210901T1550Z.NO/
1222 PM EDT Wed Sep 1 2021

...The Flood Warning for the Christina River At Coochs Bridge has 
been cancelled...

The Flood Warning is cancelled for
  the Christina River At Coochs Bridge.
* At 12:15 PM EDT Wednesday the stage was 10.4 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to fall to 4.3 feet early 
  tomorrow afternoon. However, some additional crests are possible 
  this afternoon as heavy rainfall returns

&&


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

Christina River
Coochs Bridge  11.0  10.4  Wed 12 pm ED 4.3   MSG   MSG          





&&

LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569

$$

NC

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, 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, 6:08 PM EDT	River Flood Warning	PHI	New Castle	18 hr
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.