Alert archive / Delaware / River Flood Warnings in 2020

River Flood Warning 8, NWS Philadelphia/Mount Holly

April 13, 2020New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Apr 13, 2020, 11:25 AM EDT for New Castle County, Delaware. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Apr 13, 2020, 11:25 AM EDT (15:25 UTC)
Expired: Apr 13, 2020, 2:55 PM EDT
In force: 4 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 15:26 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 11.23 ft at Apr 13, 2020, 12:00 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.

105 
WGUS41 KPHI 131525
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1125 AM EDT Mon Apr 13 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.

&&

DEC003-132125-
/O.NEW.KPHI.FL.W.0008.200413T1525Z-200413T2306Z/
/CHBD1.1.ER.200413T1430Z.200413T1600Z.200413T1706Z.NO/
1125 AM EDT Mon Apr 13 2020

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Christina River at Coochs Bridge.
* Until this evening...or until the warning is cancelled.
* At 11:15 AM Monday the stage was 11.2 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring.
* Forecast...The river will continue rising to near 11.3 feet.
  The river will fall below flood stage this afternoon.
* 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.
* Flood history...This crest compares to a previous crest of 11.4 
  feet on Apr 17 2011.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Christina River
  Coochs Bridge          11.0   11.19  Mon 11 AM   11.3    Mon 12 PM
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

Kruzdlo

1 follow-up statement

524 
WGUS81 KPHI 131855
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
255 PM EDT Mon Apr 13 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.

&&

DEC003-131925-
/O.CAN.KPHI.FL.W.0008.000000T0000Z-200413T2306Z/
/CHBD1.1.ER.200413T1430Z.200413T1602Z.200413T1718Z.NO/
255 PM EDT Mon Apr 13 2020

The Flood Warning is cancelled for
  The Christina River at Coochs Bridge.
* At 2:16 PM Monday the stage was 10.3 feet.
* Flood stage is 11.0 feet.
* Fell below flood stage at 1:18 PM Monday.
* Forecast...Additional rain will move across northern New Castle
  county this afternoon. Additional rises are possible.
* 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.
* Flood history...This crest compares to a previous crest of 10.3 
  feet on Mar 21 2001.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Christina River
  Coochs Bridge          11.0   10.32  Mon 2 PM    Now Below Flood Stage 
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

Kruzdlo

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 3:43 AM EDT	Coastal Flood Statement	PHI	Sussex	17 hr
Apr 13, 5:12 AM EDT	Special Weather Statement	PHI	Kent, New Castle	33 min
Apr 13, 5:41 AM EDT	Special Weather Statement	PHI	New Castle	34 min
Apr 13, 5:44 AM EDT	Special Weather Statement	PHI	Kent, Sussex	31 min
Apr 13, 6:11 AM EDT	Areal Flood Advisory	PHI	New Castle	4 hr
Apr 13, 6:17 AM EDT	Special Weather Statement	PHI	Kent, New Castle	28 min
Apr 13, 6:42 AM EDT	Areal Flood Advisory	PHI	Kent, New Castle	4 hr
Apr 13, 6:48 AM EDT	Areal Flood Advisory	PHI	New Castle	4 hr
Apr 13, 12:13 PM EDT	River Flood Warning	PHI	New Castle	3 hr
Apr 13, 2:41 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	64 min
Apr 13, 3:22 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	38 min
Apr 13, 3:26 PM EDT	Tornado Warning	PHI	Kent	13 min
Apr 13, 3:40 PM EDT	Severe Thunderstorm Warning	PHI	Kent	65 min
Apr 13, 3:45 PM EDT	Tornado Warning	PHI	Kent	15 min

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.