Alert archive / Illinois / Flash Flood Warnings in 2004

Flash Flood Warning 48, NWS Lincoln, IL

July 10, 2004Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 10, 2004, 12:53 AM CDT for Champaign County, Vermilion County, Illinois. It was in force for 6 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: Jul 10, 2004, 12:53 AM CDT (05:53 UTC)
Expired: Jul 10, 2004, 7:00 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 122 km from the middle of the area, began a volume at 05:56 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.9 hours before the alert went out and 60 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: 2969 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1066 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 100556
FFWILX
ILC019-183-101200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1253 AM CDT SAT JUL 10 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS
  VERMILION COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 700 AM CDT

* AT 1246 AM CDT...THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL 
  CONTINUE FROM CHAMPAIGN EAST TO DANVILLE AND BISMARK. DOPPLER
  RAINFALL RATES OF 1 TO 2 INCHES WILL BE LIKELY FROM JUST NORTH
  OF CHAMPAIGN TO DANVILLE. THE NORTHERN PART OF CHAMPAIGN AND
  VERMILION COUNTIES HAVE ALREADY RECEIVED HEAVY RAINFALL FROM 
  THUNDERSTORMS ON FRIDAY. ADDITIONAL RAINFALL IN THESE AREAS 
  WILL LIKELY PRODUCE FLASH FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG CREEKS AND STREAMS ARE ESPECIALLY VULNERABLE
TO THE EFFECTS OF FLASH FLOODING. DO NOT ATTEMPT TO CROSS FLOODED
AREAS BY FOOT OR AUTOMOBILE.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 4039 8757 4006 8758 3996 8838 4037 8841

$$

SMITH

1 follow-up statement

000 
WGUS73 KILX 100914
FFSILX
ILC019-183-100930-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
415 AM CDT SAT JUL 10 2004

...THE FLASH FLOOD WARNING FOR VERMILION AND CHAMPAIGN COUNTIES HAS
BEEN CANCELLED...

THE HEAVY RAINFALL AND FLASH FLOOD THREAT HAS ENDED ACROSS THE WARNED 
AREA. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED. 

ALTHOUGH THE HEAVY RAINS WHICH PROMPTED THE WARNING HAVE MOVED 
OUT...THERE IS A CHANCE FOR ADDITIONAL HEAVY RAINFALL FROM THUNDERSTORMS 
THAT ARE EXPECTED TO DEVELOP OVER THE AREA DURING THE AFTERNOON HOURS.

LAT...LON 4034 8771 3996 8772 3996 8822 4034 8821

$$
SMITH

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 7:14 PM CDT	Severe Thunderstorm Warning	ILX	Woodford	61 min
Jul 9, 7:43 PM CDT	Severe Thunderstorm Warning	ILX	Piatt	62 min
Jul 9, 9:23 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	67 min
Jul 10, 1:18 PM CDT	Flash Flood Warning	ILX	Champaign	3 hr

Nearby

Flash Flood Warnings in Illinois, 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; radar from the NEXRAD Level II archive.