Alert archive / Illinois / Flash Flood Warnings in 2003

Flash Flood Warning 17, NWS Lincoln, IL

June 11, 2003DeWitt County, Piatt County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 11, 2003, 7:56 PM CDT for DeWitt County, Piatt 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: Jun 11, 2003, 7:56 PM CDT (00:56 UTC)
Expired: Jun 12, 2003, 2:00 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties DeWitt County, IL, Piatt County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.9 hours before the alert went out and 8 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: 467 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1056 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 26 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 120057
FFWILX
ILC039-147-120700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
756 PM CDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DE WITT COUNTY IN CENTRAL ILLINOIS
  PIATT COUNTY IN CENTRAL ILLINOIS

* UNTIL 200 AM CDT

* AT 750 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN HAS FALLEN ACROSS ALONG AND NORTH OF A CLINTON
  TO CISCO LINE. 2 TO 3 INCHES OF RAIN HAS BEEN ESTIMATED SINCE
  600 PM. .

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS
  THESE AREAS THROUGH 10 PM. RAINFALL AMOUNTS WILL LIKELY RANGE 
  2 TO 4 INCHES...WHICH 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 4027 8852 3982 8849 4004 8874 4023 8915

$$

SMITH
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:01 PM CDT	Flash Flood Warning	ILX	Logan, Macon, Sangamon	6 hr
Jun 11, 7:04 PM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	6 hr
Jun 11, 7:18 PM CDT	Tornado Warning	ILX	Christian, Macon, Piatt, Sangamon	57 min
Jun 11, 7:32 PM CDT	Tornado Warning	ILX	Champaign, Vermilion	58 min
Jun 11, 9:40 PM CDT	Flash Flood Warning	ILX	Christian	6 hr
Jun 12, 12:57 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	3 hr

Nearby

Flash Flood Warnings in Illinois, 2003 Every flash flood warning in 2003

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.