Alert archive / Delaware / Flash Flood Warnings in 2004

Flash Flood Warning 62, NWS Philadelphia/Mount Holly

August 1, 2004Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 1, 2004, 12:03 PM EDT for Kent County, Sussex County, Delaware. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 1, 2004, 12:03 PM EDT (16:03 UTC)
Expired: Aug 1, 2004, 3:00 PM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Kent County, DE, Sussex County, DE

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 4.1 hours before the alert went out and 109 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1993 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 487 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KPHI 011605
FFWPHI
DEC001-005-011900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1203 PM EDT SUN AUG 1 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN KENT COUNTY IN CENTRAL DELAWARE
  NORTHEASTERN SUSSEX COUNTY IN SOUTHERN DELAWARE

* UNTIL 300 PM EDT

* AT 1157 AM EDT...DOPPLER RADAR STORM TOTAL ESTIMATES HAVE REACHED 
  BETWEEN 3 AND 4 INCHES ALONG THE COUNTY BORDER FROM HOUSTON AND
  MILFORD EASTWARD. OVER 2 INCHES OF RAIN HAS FALLEN IN THE PAST 
  HOUR AND ADDITIONAL HEAVY RAIN IS LIKELY THROUGH 1 PM. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 3892 7561 3878 7552 3886 7526 3905 7531

$$

TFG

1 follow-up statement

000 
WGUS71 KPHI 011821
FFSPHI
DEC001-011835-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
217 PM EDT SUN AUG 1 2004

...THE FLASH FLOOD WARNING FOR KENT COUNTY DELAWARE HAS BEEN 
CANCELLED...

ALTHOUGH SCATTERED SHOWERS REMAIN OVER KENT COUNTY DELAWARE, THE 
SHOWERS AND THUNDERSTORMS THAT WERE CAUSING THE TORRENTIAL DOWNPOURS 
AND FLOODING HAVE MOVED SOUTH INTO SUSSEX COUNTY DELAWARE. .

$$

RNS/GIGI

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 8:46 AM EDT	Flash Flood Warning	PHI	New Castle	119 min
Aug 1, 2:17 PM EDT	Flash Flood Warning	PHI	Sussex	3 hr

Nearby

Flash Flood Warnings in Delaware, 2004 Every flash flood warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.