Alert archive / Delaware / River Flood Warnings in 2011

River Flood Warning 201, NWS Philadelphia/Mount Holly

November 22, 2011New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Nov 22, 2011, 8:03 PM EST for New Castle County, Delaware. It took effect at Nov 22, 2011, 8:52 PM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Nov 22, 2011, 8:03 PM EST (01:03 UTC)
In effect from: Nov 22, 2011, 8:52 PM EST
Expired: Nov 23, 2011, 1:50 AM EST
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly
Flood severity: Minor

County New Castle County, DE

The radar

The Dover AFB radar (KDOX), 85 km from the middle of the area, began a volume at 01:04 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 11.32 ft at Nov 23, 2011, 9:00 AM EST.

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, in the capitals the NWS used until 2016.

754 
WGUS41 KPHI 230103
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
803 PM EST TUE NOV 22 2011

...THE NATIONAL WEATHER SERVICE HAS ISSUED A FLOOD WARNING FOR
THE CHRISTINA RIVER AT COOCHS BRIDGE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE 
WATER MAY BE DEEPER THAN YOU THINK IT IS.

&&

DEC003-230703-
/O.NEW.KPHI.FL.W.0201.111123T0152Z-111123T0908Z/
/CHBD1.1.ER.111123T0152Z.111123T0200Z.111123T0308Z.NO/
803 PM EST TUE NOV 22 2011

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 7:46 PM...THE STAGE WAS 9.5 FEET AND RISING. 
* FLOOD STAGE IS 10.5 FEET. 
* MINOR FLOODING IS FORECAST. 
* FORECAST...THE RIVER LEVEL SHOULD RISE ABOVE FLOOD STAGE THIS
  EVENING...CRESTING AROUND 10.6 FEET. THE RIVER IS EXPECTED TO
  FALL BACK BELOW FLOOD STAGE OVERNIGHT.
* IMPACT...AT 10.0 FEET...FLOODING BEGINS IN THE TOWN OF CHRISTIANA.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHRISTINA RIVER
  COOCHS BRIDGE    10.5    9.54  TUE 745 PM   10.6    TUE 900 PM 

&&

IOVINO

1 follow-up statement

232 
WGUS81 KPHI 230650
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
150 AM EST WED NOV 23 2011

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN 
DELAWARE...
 
  CHRISTINA RIVER AT COOCHS BRIDGE AFFECTING NEW CASTLE COUNTY

...THE CHRISTINA RIVER AT COOCHS BRIDGE WILL CONTINUE TO FALL
EARLY THIS MORNING...

DEC003-230720-
/O.CAN.KPHI.FL.W.0201.000000T0000Z-111123T0908Z/
/CHBD1.1.ER.111123T0209Z.111123T0401Z.111123T0606Z.NO/
150 AM EST WED NOV 23 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE CHRISTINA RIVER AT COOCHS BRIDGE.
* AT  1:31 AM WEDNESDAY THE STAGE WAS 10.4 FEET. 
* FLOOD STAGE IS 10.5 FEET. 
* FORECAST...THE STREAM HAS FALLEN BELOW FLOOD STAGE AND WILL
  CONTINUE TO DROP SLOWLY EARLY THIS MORNING.
* IMPACT...AT 10.0 FEET...FLOODING BEGINS IN THE TOWN OF CHRISTIANA.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHRISTINA RIVER
  COOCHS BRIDGE    10.5   10.35  WED 2 AM    CRESTED AND FALLING 

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 22, 9:32 PM EST	Coastal Flood Advisory	PHI	Kent, New Castle, Sussex	15 hr
Nov 23, 3:08 AM EST	Special Weather Statement	PHI	New Castle	3 hr
Nov 23, 3:44 AM EST	Areal Flood Warning	PHI	New Castle	8 hr
Nov 23, 5:13 AM EST	Areal Flood Advisory	PHI	Kent, New Castle, Sussex	3 hr
Nov 23, 5:42 AM EST	River Flood Warning	PHI	New Castle	6 hr
Nov 23, 7:49 AM EST	River Flood Warning	PHI	New Castle	119 min
Nov 23, 9:32 AM EST	River Flood Warning	PHI	New Castle	115 min
Nov 23, 2:29 PM EST	Coastal Flood Statement	PHI	Sussex	11 hr

Nearby

River Flood Warnings in Delaware, 2011 Every river flood warning in 2011

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.