Alert archive / Delaware / River Flood Warnings in 2018

River Flood Warning 32, NWS Philadelphia/Mount Holly

August 13, 2018New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Aug 13, 2018, 8:28 AM EDT for New Castle County, Delaware. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Aug 13, 2018, 8:28 AM EDT (12:28 UTC)
Expired: Aug 13, 2018, 2:34 PM EDT
In force: 6 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 12:29 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 Christina River at Coochs Bridge (CHBD1). The gauge peaked at 12.09 ft at Aug 13, 2018, 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.

084 
WGUS41 KPHI 131228
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
828 AM EDT Mon Aug 13 2018

...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.

&&

DEC003-131827-
/O.NEW.KPHI.FL.W.0032.180813T1228Z-180813T1906Z/
/CHBD1.1.ER.180813T1219Z.180813T1300Z.180813T1306Z.NO/
828 AM EDT Mon Aug 13 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Christina River at Coochs Bridge.
* until this afternoon...or until the warning is cancelled.
* At 8:16 AM Monday the stage was 11.0 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage and continue to rise to near
  11.3 feet by late this morning. The river will fall below 
  flood stage by late this morning.
* 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 11.3
  feet on Jul 3 1994.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Christina River
  Coochs Bridge          11.0   10.97  Mon 8 AM    11.3    Mon 9 AM 
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

Kruzdlo

2 follow-up statements

058 
WGUS41 KPHI 131538
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1138 AM EDT Mon Aug 13 2018

...Forecast flooding changed from Minor to Moderate severity 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.

&&

DEC003-132137-
/O.EXT.KPHI.FL.W.0032.000000T0000Z-180813T2336Z/
/CHBD1.2.ER.180813T1218Z.180813T1600Z.180813T1736Z.NO/
1138 AM EDT Mon Aug 13 2018

...Observed flooding increased from Minor to Moderate severity...
...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for 
 The Christina River at Coochs Bridge.
* until this evening...or until the warning is cancelled.
* At 11:30 AM Monday the stage was 12.0 feet.
* Flood stage is 11.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 12.2 feet by this afternoon.
  The river will fall below flood stage this afternoon.
* 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   12.00  Mon 11 AM   12.2    Mon 12 PM
 
&&
 
LAT...LON 3964 7578 3970 7578 3965 7570 3968 7565
      3968 7557 3959 7569             

$$

719 
WGUS81 KPHI 131834
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
234 PM EDT Mon Aug 13 2018

...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.

&&

DEC003-131904-
/O.CAN.KPHI.FL.W.0032.000000T0000Z-180813T2336Z/
/CHBD1.2.ER.180813T1218Z.180813T1631Z.180813T1755Z.NO/
234 PM EDT Mon Aug 13 2018

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 1:55 PM Monday.
* Forecast...Barring any additional rainfall, the river will 
  continue to fall this afternoon.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Christina River
  Coochs Bridge          11.0   10.33  Mon 2 PM    9.2    Mon 3 PM 
 
&&
 
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
Aug 12, 10:08 PM EDT	Flash Flood Watch	PHI	New Castle	24 hr
Aug 13, 5:12 AM EDT	Areal Flood Advisory	PHI	Kent, New Castle	103 min
Aug 13, 6:24 AM EDT	Areal Flood Advisory	PHI	New Castle	4 hr
Aug 13, 6:50 AM EDT	Flash Flood Warning	PHI	New Castle	6 hr
Aug 13, 8:20 AM EDT	River Flood Warning	PHI	New Castle	7 hr
Aug 13, 9:05 AM EDT	River Flood Warning	PHI	New Castle	6 hr
Aug 13, 12:37 PM EDT	Areal Flood Warning	PHI	New Castle	18 hr

Nearby

River Flood Warnings in Delaware, 2018 Every river flood warning in 2018

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.