Alert archive / Illinois / Flash Flood Warnings in 2004

Flash Flood Warning 7, NWS Lincoln, IL

May 18, 2004McLean County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 18, 2004, 6:24 PM CDT for McLean County, Illinois. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 18, 2004, 6:24 PM CDT (23:24 UTC)
Expired
May 18, 2004, 9:30 PM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Counties, with a storm outline in the text

County McLean County, IL

The radar

The Lincoln radar (KILX), 60 km from the middle of the area, began a volume at 23:24 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.

What was reported inside it

TimeReportWhereRemark
May 18, 6:30 PM CDTFLOODNormal, ILSTREETS FLOODED IN NORTHERN PART OF NORMAL.
May 18, 6:30 PM CDTFLOODNormal, ILSTREETS FLOODED IN NORTHERN PART OF NORMAL.
May 18, 6:30 PM CDTFLOODNormal, ILSTREETS FLOODED IN NORTHERN PART OF NORMAL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.4 hours before the alert went out and 45 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2004-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 989 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2004-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
989 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
838 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 182326
FFWILX
ILC113-190230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
624 PM CDT TUE MAY 18 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCLEAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 930 PM CDT

* AT 619 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN WAS FALLING OVER THE WESTERN PORTIONS OF MCLEAN    
  COUNTY. RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A SHORT 
  PERIOD OF TIME ARE POSSIBLE. THE HEAVIEST RAINS WILL BE MOVING INTO
  BLOOMINGTON BETWEEN 530 AND 6 PM.

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 4065 8863 4038 8856 4036 8918 4056 8912

$$

HALL
2 follow-up statements
000 
WGUS73 KILX 190025
FFSILX
ILC113-190215-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
720 PM CDT TUE MAY 18 2004

...A FLASH FLOOD WARNING CONTINUES FOR MCLEAN COUNTY UNTIL 930 PM
CDT...

AT 720 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT HEAVY RAINS WERE CONTINUING OVER CENTRAL AND SOUTHERN PORTIONS 
OF THE COUNTY. RAINFALL AMOUNTS OF ONE TO TWO INCHES PER HOUR ARE 
STILL POSSIBLE. SEVERAL REPORTS HAVE BEEN RECEIVED OF STREETS AND 
ROADS BEING UNDER WATER IN NORMAL AND DANVERS.  

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 4064 8869 4036 8868 4036 8918 4056 8912

$$

HALL
000 
WGUS73 KILX 190234
FFSILX
ILC113-190245-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
930 PM CDT TUE MAY 18 2004

...THE FLASH FLOOD WARNING FOR MCLEAN COUNTY HAS BEEN ALLOWED 
TO EXPIRE...

AT 927 PM CDT...MCLEAN COUNTY SHERIFFS AND BLOOMINGTON POLICE REPORT 
THAT NO ADDITIONAL REPORTS OF FLOODING HAVE BEEN RECEIVED. WATER WAS 
RECEDING IN THIS AREA AND THIS TREND SHOULD CONTINUE. THE HEAVY 
RAINFALL AND FLOOD THREAT HAS ENDED ACROSS THE WARNED AREA. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.


LAT...LON 4072 8860 4034 8861 4034 8911 4071 8896

$$
SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 12:27 PM CDTSevere Thunderstorm WarningILXMorgan63 min
May 18, 1:43 PM CDTSevere Thunderstorm WarningILXChampaign, Piatt62 min
May 18, 1:58 PM CDTFlash Flood WarningILXDeWitt6 hr
May 18, 3:41 PM CDTSevere Thunderstorm WarningILXMcLean49 min
May 18, 3:43 PM CDTSevere Thunderstorm WarningILXMcLean47 min
May 18, 4:43 PM CDTSevere Thunderstorm WarningILXPeoria, Tazewell, Woodford62 min
May 18, 4:45 PM CDTFlash Flood WarningILXPeoria4 hr
May 18, 4:53 PM CDTSevere Thunderstorm WarningILXChristian, Shelby52 min
May 18, 5:08 PM CDTTornado WarningILXTazewell, Woodford52 min
May 18, 5:35 PM CDTTornado WarningILXTazewell, Woodford25 min
May 18, 5:40 PM CDTSevere Thunderstorm WarningILXMcLean65 min
May 18, 6:11 PM CDTTornado WarningILXMcLean64 min

Nearby

Flash Flood Warnings in Illinois, 2004Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.