Alert archive / Delaware / River Flood Warnings in 2021

River Flood Warning 5, NWS Philadelphia/Mount Holly

June 9, 2021New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Jun 9, 2021, 7:54 AM EDT for New Castle County, Delaware. It took effect at Jun 9, 2021, 10:15 AM EDT. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 9, 2021, 7:54 AM EDT (11:54 UTC)
In effect from
Jun 9, 2021, 10:15 AM EDT
Expired
Jun 9, 2021, 12:24 PM EDT
In force
2 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 11:56 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 16.27 ft at Jun 9, 2021, 10:00 AM EDT.

actionminormoderatemajor15202506/0906/10
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.

846 
WGUS41 KPHI 091154
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
754 AM EDT Wed Jun 9 2021

...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 Downingtown, Chadds Ford, 
Wilmington...Moderate 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.


DEC003-092200-
/O.NEW.KPHI.FL.W.0005.210609T1415Z-210609T2146Z/
/WMND1.1.ER.210609T1415Z.210609T1500Z.210609T1545Z.UU/
754 AM EDT Wed Jun 9 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the Brandywine Creek At Wilmington.
* Until this afternoon.
* At 7:15 AM EDT Wednesday the stage was 15.9 feet.
* Flood stage is 16.5 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this morning to a crest of 16.6 feet late this morning. It will 
  then fall below flood stage late this morning.
* Impact...At 14.5 feet, Minor flooding begins along the creek in 
  the Brandywine State Park.
* Impact...At 16.5 feet, North Park Drive, west of North Market 
  Street, in Brandywine State Park is subject to flooding and 
  closures.
* Impact...At 17.0 feet, Some flooding begins in the historic 
  Breck's Mill area in Montchanin.
* Flood History...This crest compares to a previous crest of 16.7 
  feet on 10/30/2012.

&&


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

Brandywine Creek
Wilmington      16.5  15.9  Wed 7 am EDT 13.7  13.7  MSG          





&&

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

$$

Deal
1 follow-up statement
989 
WGUS81 KPHI 091624
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1224 PM EDT Wed Jun 9 2021

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

  Brandywine Creek At Wilmington affecting New Castle County.

DEC003-091730-
/O.CAN.KPHI.FL.W.0005.000000T0000Z-210609T1624Z/
/WMND1.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1224 PM EDT Wed Jun 9 2021

...The Flood Warning for the Brandywine Creek At Wilmington has been 
cancelled...

The Flood Warning is cancelled for
  the Brandywine Creek At Wilmington.
* At 12:15 PM EDT Wednesday the stage was 16.2 feet.
* Flood stage is 16.5 feet.
* Forecast...The river is expected to fall to 13.1 feet Saturday 
  morning.

&&


                Fld   Observed           Forecasts (2 pm EDT)     
Location        Stg   Stg   Day/Time     Thu   Fri   Sat          

Brandywine Creek
Wilmington      16.5  16.2  Wed 12 pm ED 14.5  13.2  MSG          





&&

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

$$

JEO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:15 PM EDTSpecial Weather StatementPHISussex45 min
Jun 9, 1:35 PM EDTSpecial Weather StatementPHINew Castle25 min
Jun 9, 2:07 PM EDTSevere Thunderstorm WarningPHINew Castle23 min
Jun 9, 2:21 PM EDTFlash Flood WarningPHINew Castle73 min
Jun 9, 2:26 PM EDTSevere Thunderstorm WarningPHIKent64 min
Jun 9, 2:28 PM EDTSevere Thunderstorm WarningPHISussex62 min
Jun 9, 3:11 PM EDTSevere Thunderstorm WarningPHISussex64 min
Jun 9, 3:24 PM EDTAreal Flood AdvisoryPHISussex3 hr
Jun 9, 4:32 PM EDTAreal Flood AdvisoryPHISussex108 min
Jun 9, 4:37 PM EDTSevere Thunderstorm WarningPHIKent, Sussex27 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.