Alert archive / Delaware / River Flood Warnings in 2023

River Flood Warning 48, NWS Philadelphia/Mount Holly

December 18, 2023New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 18, 2023, 5:25 AM EST for New Castle County, Delaware. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Dec 18, 2023, 5:25 AM EST (10:25 UTC)
Expired: Dec 18, 2023, 1:22 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 Dover AFB radar (KDOX), 100 km from the middle of the area, began a volume at 10:24 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 14.42 ft at Dec 18, 2023, 9:00 AM EST.

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.

618 
WGUS41 KPHI 181025
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
525 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...

  White Clay Creek Near Newark affecting New Castle County.



For the White Clay Creek...including Newark...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 afternoon at 400 PM EST.

&&

DEC003-182100-
/O.NEW.KPHI.FL.W.0048.231218T1025Z-231218T2051Z/
/DPKD1.1.ER.231218T0840Z.231218T1200Z.231218T1450Z.NO/
525 AM EST Mon Dec 18 2023

...FLOOD WARNING IN EFFECT FROM EARLY THIS MORNING TO LATE THIS 
AFTERNOON...

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

* WHERE...White Clay Creek near Newark.

* WHEN...From early this morning to late this afternoon.

* IMPACTS...At 11.0 feet, Flooding begins into adjacent open fields.
  At 13.3 feet, Delaware Route 7, Stanton Christiana Road, begins to 
  flood.
  At 13.5 feet, Businesses on Delaware Route 7 begin to flood.

* ADDITIONAL DETAILS...
  - At 5:15 AM EST Monday the stage was 13.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 5:15 AM EST Monday was 13.9 feet.
  - Forecast...The river is expected to fall below flood stage
    late this morning.
  - Flood stage is 13.0 feet.
  - Flood History...This crest compares to a previous crest of
    14.2 feet on 11/30/2020.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (5 am)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

White Clay Creek
Newark          13.0  13.9 Mon 5 am   5.2  MSG        14.1 7am 12/18


&&

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


$$

Kruzdlo

1 follow-up statement

420 
WGUS81 KPHI 181822
FLSPHI

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

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

  White Clay Creek Near Newark affecting New Castle County.



DEC003-181930-
/O.CAN.KPHI.FL.W.0048.000000T0000Z-231218T1822Z/
/DPKD1.1.ER.231218T0840Z.231218T1330Z.231218T1812Z.NO/
122 PM EST Mon Dec 18 2023

...FLOOD WARNING IS CANCELLED...

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

* ADDITIONAL DETAILS...
  - At 1:15 PM EST Monday the stage was 13.0 feet.
  - Forecast...The river is expected to fall to 5.1 feet late
    tomorrow evening.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

White Clay Creek
Newark          13.0  12.97 Mon 1 pm   5.2  MSG    Crested & falling


&&

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
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, 6:24 AM EST	River Flood Warning	PHI	New Castle	15 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.