Alert archive / Delaware / River Flood Warnings in 2009

River Flood Warning 1, NWS Philadelphia/Mount Holly

May 7, 2009New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at May 7, 2009, 2:00 AM EDT for New Castle County, Delaware. It took effect at May 7, 2009, 5:26 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
May 7, 2009, 2:00 AM EDT (06:00 UTC)
In effect from
May 7, 2009, 5:26 AM EDT
Expired
May 7, 2009, 4:55 AM EDT
In force
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 06:03 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 9.11 ft at May 7, 2009, 3:00 AM EDT.

actionminormoderatemajor51005/0705/08
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.

000 
WGUS41 KPHI 070600
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
200 AM EDT THU MAY 07 2009

...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

...MINOR FLOODING IS FORECAST FOR THE CHRISTINA RIVER...

DEC003-071200-
/O.NEW.KPHI.FL.W.0001.090507T0926Z-090507T2033Z/
/CHBD1.1.ER.090507T0926Z.090507T1200Z.090507T1433Z.NO/
200 AM EDT THU MAY 07 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE CHRISTINA RIVER AT COOCHS BRIDGE.
* FROM EARLY THIS MORNING TO THIS AFTERNOON...OR UNTIL THE WARNING IS 
  CANCELLED.
* AT  1:45 AM THURSDAY THE STAGE WAS 9.1 FEET. 
* MINOR FLOODING IS FORECAST. 
* FLOOD STAGE IS 10.5 FEET. 
* FORECAST...RISE ABOVE FLOOD STAGE EARLY THIS MORNING AND CONTINUE 
  TO RISE TO NEAR 11.3 FEET during the 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    9.07  THU 2 AM    11.3  THU 8 AM 

&&
1 follow-up statement
000 
WGUS81 KPHI 070855
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
455 AM EDT THU MAY 07 2009

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

...SIGNIFICANT RISES NEAR CHRISTINA RIVER AT COOCHS BRIDGE...

DEC003-070925-
/O.CAN.KPHI.FL.W.0001.000000T0000Z-090507T2033Z/
/CHBD1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
455 AM EDT THU MAY 07 2009

THE FLOOD WARNING IS CANCELLED FOR
  THE CHRISTINA RIVER AT COOCHS BRIDGE.
* AT 04AM THURSDAY THE STAGE WAS 8.6 FEET.  
* FLOOD STAGE IS 10.5 FEET.
* 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    8.65  THU 5 AM     8.4  THU 5 AM 

&&

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 9:01 PM EDTFlood WatchPHINew Castle19 hr
May 7, 1:51 AM EDTFlash Flood WarningPHINew Castle5 hr
May 7, 1:22 PM EDTAreal Flood AdvisoryPHINew Castle4 hr
May 7, 1:33 PM EDTSevere Thunderstorm WarningPHIKent, New Castle66 min

Nearby

River Flood Warnings in Delaware, 2009Every river flood warning in 2009

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.