Alert archive / Delaware / River Flood Warnings in 2018

River Flood Warning 59, NWS Philadelphia/Mount Holly

November 24, 2018New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this river flood warning at Nov 24, 2018, 9:14 PM EST for New Castle County, Delaware. It took effect at Nov 24, 2018, 9:26 PM EST. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Nov 24, 2018, 9:14 PM EST (02:14 UTC)
In effect from: Nov 24, 2018, 9:26 PM EST
Expired: Nov 25, 2018, 5:25 AM EST
In force: 8 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), 100 km from the middle of the area, began a volume at 02:14 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 14.27 ft at Nov 25, 2018, 1:00 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.

783 
WGUS41 KPHI 250214
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
914 PM EST Sat Nov 24 2018

...The National Weather Service in Mount Holly NJ has issued a
Flood Warning for the White Clay Creek at Newark...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

DEC003-250813-
/O.NEW.KPHI.FL.W.0059.181125T0226Z-181125T1247Z/
/DPKD1.1.ER.181125T0226Z.181125T0400Z.181125T0647Z.NO/
914 PM EST Sat Nov 24 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The White Clay Creek at Newark.
* until Sunday morning or until the warning is cancelled.
* At 9:00 PM the river level was 11.93 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is forecast to rise above flood stage 
  this evening, reaching 14.9 feet. The river level should fall
  back below flood stage after midnight.
* Impact...At 13.5 feet businesses on Delaware Route 7 begin to
  flood.
* Flood history...This crest compares to a previous crest of 14.9
  feet on October 19, 1996.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

White Clay Creek
  Newark                13.0   11.93  Sat 9 PM    14.9  Sat 11 PM
 
&&
 
LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574
                                      
$$

Iovino

2 follow-up statements

135 
WGUS41 KPHI 250703
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
203 AM EST Sun Nov 25 2018

...Flood Warning Continues for the White Clay Creek Near
Newark...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

DEC003-251303-
/O.EXT.KPHI.FL.W.0059.000000T0000Z-181125T1658Z/
/DPKD1.1.ER.181125T0245Z.181125T0615Z.181125T1058Z.NO/
203 AM EST Sun Nov 25 2018

The Flood Warning continues for 
 The White Clay Creek Near Newark.
* until late this morning or until the warning is cancelled.
* At 1:15 AM the creek level was 14.32 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and is forecast to continue.
* Forecast...The creek was near crest and it should fall back
  below flood stage this morning.
* Impact...At 13.5 feet...Businesses on Delaware Route 7 flood.
* Flood history...This crest compares to a previous crest of
  14.3 feet on June 28, 2006.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

White Clay Creek
  Newark                13.0   14.32  Sun 115 AM   14.3   Sun 3 AM 
 
&&
 
LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574
                                      
$$

Iovino

973 
WGUS81 KPHI 251025
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
525 AM EST Sun Nov 25 2018

...The Flood Warning is cancelled for the White Clay Creek
at Newark...

&&

DEC003-251055-
/O.CAN.KPHI.FL.W.0059.000000T0000Z-181125T1658Z/
/DPKD1.1.ER.181125T0245Z.181125T0630Z.181125T1004Z.NO/
525 AM EST Sun Nov 25 2018

The Flood Warning is cancelled for
  The White Clay Creek at Newark.
* At 5:15 AM the creek level was 12.81 feet.
* Flood stage is 13.0 feet.
* The creek fell below flood stage at 5:04 AM.
* Forecast...The creek level will continue to fall.

&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

White Clay Creek
  Newark                13.0   12.81  Sun 515 AM   Crested 
 
&&
 
LAT...LON 3972 7576 3973 7566 3967 7564 3966 7574
                                      
$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 24, 8:03 PM EST	River Flood Warning	PHI	New Castle	8 hr
Nov 24, 10:08 PM EST	River Flood Warning	PHI	New Castle	6 hr
Nov 24, 11:01 PM EST	Wind Advisory	PHI	Sussex	5 hr
Nov 25, 9:39 AM EST	Coastal Flood Advisory	PHI	Sussex	5 hr
Nov 25, 3:25 PM EST	Coastal Flood Advisory	PHI	Kent, New Castle, Sussex	34 hr
Nov 25, 3:35 PM EST	Flood Watch	PHI	New Castle	27 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.