Alert archive / Delaware / River Flood Warnings in 2011

River Flood Warning 210, NWS Philadelphia/Mount Holly

November 23, 2011New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Nov 23, 2011, 9:32 AM EST for New Castle County, Delaware. It was in force for 115 min.

The area

The counties it named.

The facts

Issued: Nov 23, 2011, 9:32 AM EST (14:32 UTC)
Expired: Nov 23, 2011, 11:27 AM EST
In force: 115 min
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 14:33 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 White Clay Creek near Newark (DPKD1). The gauge peaked at 12.88 ft at Nov 23, 2011, 9:00 AM EST.

Action stage: 11 ft
Minor stage: 13 ft
Moderate stage: 15 ft
Major stage: 16.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01479000, 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.

579 
WGUS41 KPHI 231432
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
932 AM EST WED NOV 23 2011

...THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A FLOOD 
WARNING FOR THE FOLLOWING RIVERS IN DELAWARE... 

  WHITE CLAY CREEK NEAR NEWARK 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.

&&

DEC003-232032-
/O.NEW.KPHI.FL.W.0210.111123T1435Z-111123T2202Z/
/DPKD1.1.ER.111123T1435Z.111123T1500Z.111123T1602Z.NO/
932 AM EST WED NOV 23 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE WHITE CLAY CREEK NEAR NEWARK.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT  9:16 AM WEDNESDAY THE STAGE WAS 12.9 FEET. 
* FLOOD STAGE IS 13.0 FEET. 
* MINOR FLOODING IS FORECAST. 
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS MORNING AND CONTINUE TO
  RISE TO NEAR 13.1 FEET BY LATE THIS MORNING. THE RIVER WILL FALL BELOW
  FLOOD STAGE VERY LATE THIS MORNING OR EARLY THIS AFTERNOON.
* IMPACT...AT 13.3 FEET...DELAWARE ROUTE 7 BEGINS TO FLOOD.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

WHITE CLAY CREEK
  NEWARK           13.0   12.88  WED 9 AM    13.1    WED 10 AM

&&

1 follow-up statement

846 
WGUS81 KPHI 231627
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1127 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
  WHITE CLAY CREEK NEAR NEWARK 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.

&&

DEC003-231657-
/O.CAN.KPHI.FL.W.0204.000000T0000Z-111123T2235Z/
/CHBD1.1.ER.111123T1126Z.111123T1401Z.111123T1557Z.NO/
1127 AM EST WED NOV 23 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE CHRISTINA RIVER AT COOCHS BRIDGE.
* AT 11:15 AM WEDNESDAY THE STAGE WAS 10.3 FEET. 
* FLOOD STAGE IS 10.5 FEET.
* FELL BELOW FLOOD STAGE AT 10:57 AM WEDNESDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 5.8 FEET BY TOMORROW 
  MORNING.
* IMPACT...AT 10.0 FEET...FLOODING BEGINS IN THE TOWN OF CHRISTIANA.

$$

DEC003-231657-
/O.CAN.KPHI.FL.W.0210.000000T0000Z-111123T2202Z/
/DPKD1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1127 AM EST WED NOV 23 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE WHITE CLAY CREEK NEAR NEWARK.
* AT 11:15 AM WEDNESDAY THE STAGE WAS 12.2 FEET. 
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER CRESTED BELOW FLOOD STAGE AT 12.9 FEET.  THE 
  RIVER WILL CONTINUE TO FALL TO 8.3 FEET BY TOMORROW MORNING.
* IMPACT...AT 13.3 FEET...DELAWARE ROUTE 7 BEGINS TO FLOOD.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHRISTINA RIVER
  COOCHS BRIDGE    10.5   10.26  WED 11 AM    CRESTED AND FALLING

WHITE CLAY CREEK
  NEWARK           13.0   12.22  WED 11 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, 8:03 PM EST	River Flood Warning	PHI	New Castle	6 hr
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, 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.