Alert archive / Delaware / River Flood Warnings in 2020

River Flood Warning 11, NWS Philadelphia/Mount Holly

July 10, 2020New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Jul 10, 2020, 3:38 PM EDT for New Castle County, Delaware. It took effect at Jul 10, 2020, 4:43 PM EDT. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jul 10, 2020, 3:38 PM EDT (19:38 UTC)
In effect from: Jul 10, 2020, 4:43 PM EDT
Expired: Jul 10, 2020, 7:37 PM EDT
In force: 3 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 19:40 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 9.78 ft at Jul 10, 2020, 5:00 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.

554 
WGUS41 KPHI 101938
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
338 PM EDT Fri Jul 10 2020

...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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

DEC003-110138-
/O.NEW.KPHI.FL.W.0011.200710T2043Z-200711T0718Z/
/CHBD1.1.ER.200710T2043Z.200710T2300Z.200711T0118Z.NO/
338 PM EDT Fri Jul 10 2020

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Christina River at Coochs Bridge.
* until late tonight...or until the warning is cancelled.
* At  3:15 PM Friday the stage was 8.9 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and continue to rise 
  to near 12.0 feet by this evening.the river will fall below flood stage by 
  tonight.
* 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 12.0 feet on Mar 22 
  2000.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Christina River
  Coochs Bridge          11.0    8.92  Fri 3 PM    12.0    Fri 7 PM 
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

1 follow-up statement

691 
WGUS81 KPHI 102337
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
737 PM EDT Fri Jul 10 2020

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

  Christina River At Coochs Bridge affecting New Castle County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

DEC003-110007-
/O.CAN.KPHI.FL.W.0011.000000T0000Z-200711T0718Z/
/CHBD1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
737 PM EDT Fri Jul 10 2020

The Flood Warning is cancelled for
  The Christina River at Coochs Bridge.
* At  7:15 PM Friday the stage was 8.7 feet.
* Flood stage is 11.0 feet.
* Forecast...The river crested below flood stage at 9.8 feet. The river will 
  continue to fall to 3.6 feet by tomorrow morning.


 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Christina River
  Coochs Bridge          11.0    8.68  Fri 7 PM     7.6    Fri 8 PM 
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 6:34 AM EDT	Flash Flood Warning	PHI	Sussex	6 hr
Jul 10, 9:21 AM EDT	Areal Flood Advisory	PHI	Kent, New Castle, Sussex	8 hr
Jul 10, 11:02 AM EDT	Areal Flood Advisory	PHI	New Castle	4 hr
Jul 10, 12:22 PM EDT	Areal Flood Warning	PHI	Sussex	3 hr
Jul 10, 12:56 PM EDT	Flash Flood Warning	PHI	New Castle	4 hr
Jul 10, 4:48 PM EDT	Areal Flood Warning	PHI	New Castle	4 hr

Nearby

River Flood Warnings in Delaware, 2020 Every river flood warning in 2020

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.