Alert archive / Delaware / River Flood Warnings in 2021
River Flood Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Aug 17, 2021, 2:06 PM EDT for New Castle County, Delaware. It took effect at Aug 17, 2021, 2:22 PM EDT. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2021, 2:06 PM EDT (18:06 UTC)
- In effect from
- Aug 17, 2021, 2:22 PM EDT
- Expired
- Aug 17, 2021, 6:33 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Moderate
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 95 km from the middle of the area, began a volume at 18:08 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 Christina River at Coochs Bridge (CHBD1). The gauge peaked at 11.68 ft at Aug 17, 2021, 4:00 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.
742
WGUS41 KPHI 171806
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
206 PM EDT Tue Aug 17 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...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.
DEC003-180100-
/O.NEW.KPHI.FL.W.0009.210817T1822Z-210818T0100Z/
/CHBD1.2.ER.210817T1822Z.210817T1900Z.210817T2004Z.NO/
206 PM EDT Tue Aug 17 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for
the Christina River At Coochs Bridge.
* Until this evening.
* At 1:16 PM EDT Tuesday the stage was 8.7 feet.
* Flood stage is 11.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage this
afternoon, cresting near 12.3 feet. It should then fall back below
flood stage by this evening.
* 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 12.2
feet on 08/13/2004.
&&
Fld Observed Forecast
Location Stg Stg Day/Time Crest
Christina River
Coochs Bridge 11.0 8.7 Tue 1 pm EDT 12.28 3pm Tue
&&
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
3968 7557 3959 7569
$$
Iovino1 follow-up statement
209
WGUS81 KPHI 172233
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
633 PM EDT Tue Aug 17 2021
...The Flood Warning is cancelled for the following rivers in
Delaware...
Christina River At Coochs Bridge affecting New Castle County.
DEC003-172345-
/O.CAN.KPHI.FL.W.0009.000000T0000Z-210817T2233Z/
/CHBD1.2.ER.210817T1822Z.210817T1900Z.210817T2004Z.NO/
633 PM EDT Tue Aug 17 2021
...The Flood Warning for the Christina River At Coochs Bridge has
been cancelled...
The Flood Warning is cancelled for
the Christina River At Coochs Bridge.
* At 6:15 PM EDT Tuesday the stage was 10.6 feet.
* Flood stage is 11.0 feet.
* Forecast...The river level is expected to continue falling.
&&
Fld Observed Forecast
Location Stg Stg Day/Time Crest
Christina River
Coochs Bridge 11.0 10.6 Tue 6 pm EDT Crested
&&
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
3968 7557 3959 7569
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 12:11 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 17, 1:25 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Aug 17, 1:31 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Aug 17, 1:46 PM EDT | River Flood Warning | PHI | New Castle | 3 hr |
| Aug 17, 1:56 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Aug 17, 2:49 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 91 min |
Nearby
River Flood Warnings in Delaware, 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.