Alert archive / Illinois / Flash Flood Warnings in 2004

Flash Flood Warning 49, NWS Lincoln, IL

July 10, 2004Champaign County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 10, 2004, 1:18 PM CDT for Champaign County, Illinois. 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: Jul 10, 2004, 1:18 PM CDT (18:18 UTC)
Expired: Jul 10, 2004, 4:00 PM CDT
In force: 3 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Champaign County, IL

The radar

The Lincoln radar (KILX), 90 km from the middle of the area, began a volume at 18:18 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 12:00Z, 6.3 hours before the alert went out and 31 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: 443 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 91 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 
WGUS53 KILX 101818
FFWILX
ILC019-102100-

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 400 PM CDT

* AT 113 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINS CONTINUING ACROSS SOUTHWEST CHAMPAIGN COUNTY. 2 TO 3 INCHES
  INCHES OF RAIN HAS BEEN ESTIMATED SINCE NOON...ESPECIALLY AT LOCATIONS 
  ALONG AND NORTH OF A LINE FROM IVESDALE TO SADORUS.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS
  SOUTHWEST CHAMPAIGN COUNTY OVER THE NEXT HOUR. RAINFALL AMOUNTS
  WILL LIKELY RANGE FROM 4 TO 5 INCHES BY 230 PM. THESE RAINFALL
  AMOUNTS 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 4008 8818 3989 8818 3989 8846 4007 8846

$$

PLAHMER

1 follow-up statement

000 
WGUS73 KILX 101922
FFSILX
ILC019-101945-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
222 PM CDT SAT JUL 10 2004

...THE FLASH FLOOD WARNING FOR CHAMPAIGN COUNTY HAS BEEN CANCELLED...

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

MORE STORMS WILL BE POSSIBLE ACROSS CHAMPAIGN COUNTY LATE THIS
AFTERNOON AND THIS EVENING. ANY ADDITIONAL RAINFALL OVER ALREADY SATURATED
GROUNDS WILL QUICKLY RESULT IN ANOTHER RISK OF FLASH FLOODING. BE AWARE OF
THE POSSIBILITY OF ADDITIONAL HEAVY RAINS THROUGH THE EVENING.


LAT...LON 4027 8796 3989 8796 3989 8846 4027 8846

$$

PLAHMER

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, 12:53 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	6 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.