Alert archive / Delaware / River Flood Warnings in 2023

River Flood Warning 49, NWS Philadelphia/Mount Holly

December 18, 2023New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 18, 2023, 6:24 AM EST for New Castle County, Delaware. It took effect at Dec 18, 2023, 1:00 PM EST. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Dec 18, 2023, 6:24 AM EST (11:24 UTC)
In effect from: Dec 18, 2023, 1:00 PM EST
Expired: Dec 18, 2023, 9:00 PM EST
In force: 8 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County New Castle County, DE

The radar

The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 11:29 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 Brandywine Creek at Wilmington (WMND1). The gauge peaked at 16.97 ft at Dec 18, 2023, 8:00 PM EST.

Action stage: 22 ft
Minor stage: 24.5 ft
Moderate stage: 26 ft
Major stage: 27 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01481500, 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.

886 
WGUS41 KPHI 181124
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
624 AM EST Mon Dec 18 2023

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

  Brandywine Creek At Wilmington affecting New Castle County.



For the Brandywine Creek...including Wilmington...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.

The next statement will be issued this evening at 630 PM EST.

&&

DEC003-182330-
/O.NEW.KPHI.FL.W.0049.231218T1800Z-231219T0000Z/
/WMND1.1.ER.231218T1800Z.231218T1800Z.231218T1800Z.NO/
624 AM EST Mon Dec 18 2023

...FLOOD WARNING IN EFFECT FROM THIS AFTERNOON TO THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Brandywine Creek at Wilmington.

* WHEN...From this afternoon to this evening.

* IMPACTS...At 14.5 feet, Minor flooding begins along the creek in 
  the Brandywine State Park.
  At 16.5 feet, North Park Drive, west of North Market Street, in 
  Brandywine State Park is subject to flooding and closures.
  At 17.0 feet, Some flooding begins in the historic Breck's Mill 
  area in Montchanin.

* ADDITIONAL DETAILS...
  - At 6:15 AM EST Monday the stage was 15.7 feet.
  - Forecast...The river is expected to rise to a crest of 16.5
    feet this afternoon.
  - Flood stage is 16.5 feet.
  - Flood History...This crest compares to a previous crest of
    16.4 feet on 04/16/2007.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 am)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Brandywine Creek
Wilmington      16.5  15.7 Mon 6 am   14.5 13.1       16.5 1pm 12/18


&&

LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560


$$

Kruzdlo

3 follow-up statements

435 
WGUS81 KPHI 182205
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
505 PM EST Mon Dec 18 2023

...The Flood Warning continues for the following rivers in 
Delaware...

  Brandywine Creek At Wilmington affecting New Castle County.



For the Brandywine Creek...including Wilmington...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.

The next statement will be issued this evening at 700 PM EST.

&&

DEC003-190000-
/O.CON.KPHI.FL.W.0049.000000T0000Z-231219T0000Z/
/WMND1.1.ER.231218T2308Z.231219T0000Z.231219T0040Z.NO/
505 PM EST Mon Dec 18 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Brandywine Creek at Wilmington.

* WHEN...Until this evening.

* IMPACTS...At 14.5 feet, Minor flooding begins along the creek in 
  the Brandywine State Park.
  At 16.5 feet, North Park Drive, west of North Market Street, in 
  Brandywine State Park is subject to flooding and closures.
  At 17.0 feet, Some flooding begins in the historic Breck's Mill 
  area in Montchanin.

* ADDITIONAL DETAILS...
  - At 4:15 PM EST Monday the stage was 16.3 feet.
  - Forecast...The river is expected to rise above flood stage
    this evening to a crest of 16.6 feet this evening. It will
    then fall below flood stage this evening.
  - Flood stage is 16.5 feet.
  - Flood History...This crest compares to a previous crest of
    16.7 feet on 10/30/2012.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Brandywine Creek
Wilmington      16.5  16.3 Mon 4 pm   13.5 12.8       16.6 7pm 12/18


&&

LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560


$$

Kruzdlo

403 
WGUS81 KPHI 182220
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
520 PM EST Mon Dec 18 2023

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

  Brandywine Creek At Wilmington affecting New Castle County.



For the Brandywine Creek...including Wilmington...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.

The next statement will be issued this evening at 900 PM EST.

&&

DEC003-190200-
/O.EXT.KPHI.FL.W.0049.000000T0000Z-231219T0200Z/
/WMND1.1.ER.231218T2148Z.231218T2201Z.231219T0040Z.NO/
520 PM EST Mon Dec 18 2023

...FLOOD WARNING NOW IN EFFECT UNTIL LATE THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Brandywine Creek at Wilmington.

* WHEN...Until late this evening.

* IMPACTS...At 14.5 feet, Minor flooding begins along the creek in 
  the Brandywine State Park.
  At 16.5 feet, North Park Drive, west of North Market Street, in 
  Brandywine State Park is subject to flooding and closures.
  At 17.0 feet, Some flooding begins in the historic Breck's Mill 
  area in Montchanin.

* ADDITIONAL DETAILS...
  - At 5:15 PM EST Monday the stage was 16.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 5:15 PM EST Monday was 16.6 feet.
  - Forecast...The river is expected to rise to a crest of 16.6
    feet this evening. It will then fall below flood stage this
    evening.
  - Flood stage is 16.5 feet.
  - Flood History...This crest compares to a previous crest of
    16.7 feet on 10/30/2012.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Brandywine Creek
Wilmington      16.5  16.5 Mon 5 pm   13.5 12.8       16.6 7pm 12/18


&&

LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560


$$

Kruzdlo

848 
WGUS81 KPHI 190144
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
844 PM EST Mon Dec 18 2023

...The Flood Warning continues for the following rivers in 
Delaware...

  Brandywine Creek At Wilmington 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.

The next statement will be issued this evening at 945 PM EST.

&&

DEC003-190245-
/O.CON.KPHI.FL.W.0049.000000T0000Z-231219T0200Z/
/WMND1.1.ER.231218T2148Z.231219T0115Z.231219T0348Z.NO/
844 PM EST Mon Dec 18 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THIS EVENING...

* WHAT...Minor flooding is occurring.

* WHERE...Brandywine Creek at Wilmington.

* WHEN...Until late this evening.

* IMPACTS...At 14.5 feet, Minor flooding begins along the creek in 
  the Brandywine State Park.
  At 16.5 feet, North Park Drive, west of North Market Street, in 
  Brandywine State Park is subject to flooding and closures.
  At 17.0 feet, Some flooding begins in the historic Breck's Mill 
  area in Montchanin.
  At 18.0 feet, Ramsey Road is subject to closures between Del. 92 
  and Beaver Dam Road as the Brandywine backs up into Ransey Run.

* ADDITIONAL DETAILS...
  - At 8:15 PM EST Monday the stage was 17.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:15 PM EST Monday was 17.1 feet.
  - Forecast...The river is expected to crest soon and fall below
    flood stage late this evening and continue falling to 12.5
    feet Thursday evening.
  - Flood stage is 16.5 feet.
  - Flood History...This crest compares to a previous crest of
    16.9 feet on 02/25/2016.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Brandywine Creek
Wilmington      16.5  17.1 Mon 8 pm   13.5 12.8        MSG  unknown


&&

LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560


$$

AAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 18, 12:48 AM EST	River Flood Warning	PHI	New Castle	11 hr
Dec 18, 1:29 AM EST	Areal Flood Warning	PHI	Kent, Sussex	11 hr
Dec 18, 2:08 AM EST	Areal Flood Warning	PHI	New Castle	12 hr
Dec 18, 2:45 AM EST	Areal Flood Warning	PHI	New Castle	6 hr
Dec 18, 5:22 AM EST	River Flood Warning	PHI	New Castle	7 hr
Dec 18, 5:25 AM EST	River Flood Warning	PHI	New Castle	8 hr
Dec 18, 1:46 PM EST	Areal Flood Warning	PHI	Sussex	13 hr
Dec 18, 4:32 PM EST	Areal Flood Warning	PHI	Kent	25 hr
Dec 18, 6:13 PM EST	Coastal Flood Advisory	PHI	Sussex	10 hr

Nearby

River Flood Warnings in Delaware, 2023 Every river flood warning in 2023

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.