Alert archive / Illinois / Flash Flood Warnings in 2003

Flash Flood Warning 40, NWS Lincoln, IL

July 18, 2003Champaign County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 18, 2003, 2:59 AM CDT for Champaign 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 18, 2003, 2:59 AM CDT (07:59 UTC)
Expired
Jul 18, 2003, 9:00 AM CDT
In force
6 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), 94 km from the middle of the area, began a volume at 08:00 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, 8.0 hours before the alert went out and 32 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 00:00Z on 2003-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2256 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 00:00Z on 2003-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
2256 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1630 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 180803
FFWILX
ILC019-181400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
259 AM CDT FRI JUL 18 2003

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 900 AM CDT

* AT 255 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN HAS FALLEN NEAR RANTOUL. 2 TO 3 INCHES OF RAIN HAS
  BEEN ESTIMATED SINCE MIDNIGHT ACROSS PARTS OF CHAMPAIGN COUNTY. 

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS 
  CHAMPAIGN COUNTY. RAINFALL AMOUNTS WILL LIKELY RANGE FROM 2 TO 5
  INCHES BY 600 AM. THESE RAINFALL AMOUNTS WILL LIKELY PRODUCE 
  FLASH FLOODING.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR
VEHICLE INTO AREAS IN WHICH WATER COVERS THE ROADWAY. IT ONLY TAKES A
FOOT OR TWO OF WATER TO WASH MOST VEHICLES AWAY. VEHICLES CAUGHT IN
RISING WATERS SHOULD BE ABANDONED QUICKLY.

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 4037 8839 3991 8843 3992 8798 4038 8795

$$

EH
NNNN
1 follow-up statement
000 
WGUS73 KILX 181207
FFSILX
ILC019-181230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
708 AM CDT FRI JUL 18 2003

...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.

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.

$$

PLAHMER

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 10:42 PM CDTSevere Thunderstorm WarningILXVermilion63 min
Jul 17, 11:48 PM CDTSevere Thunderstorm WarningILXChampaign, Vermilion57 min
Jul 18, 1:25 AM CDTSevere Thunderstorm WarningILXMcLean35 min
Jul 18, 2:01 AM CDTSevere Thunderstorm WarningILXChampaign44 min
Jul 18, 3:22 AM CDTSevere Thunderstorm WarningILXLogan53 min
Jul 18, 3:39 AM CDTSevere Thunderstorm WarningILXMason66 min
Jul 18, 4:11 AM CDTSevere Thunderstorm WarningILXMacon64 min
Jul 18, 4:45 AM CDTSevere Thunderstorm WarningILXSchuyler60 min
Jul 18, 4:49 AM CDTSevere Thunderstorm WarningILXChristian56 min
Jul 18, 5:08 AM CDTTornado WarningILXChristian52 min
Jul 18, 5:17 AM CDTSevere Thunderstorm WarningILXMason58 min
Jul 18, 5:29 AM CDTSevere Thunderstorm WarningILXCass61 min
Jul 18, 5:38 AM CDTSevere Thunderstorm WarningILXMenard37 min
Jul 18, 5:41 AM CDTTornado WarningILXShelby49 min
Jul 18, 5:45 AM CDTTornado WarningILXScott45 min
Jul 18, 6:00 AM CDTTornado WarningILXChristian45 min
Jul 18, 6:40 AM CDTFlash Flood WarningILXChristian, Logan6 hr
Jul 18, 6:45 AM CDTFlash Flood WarningILXSchuyler6 hr
Jul 18, 6:45 AM CDTSevere Thunderstorm WarningILXChristian, Shelby60 min
Jul 18, 7:05 AM CDTFlash Flood WarningILXCass, Morgan, Scott6 hr
Jul 18, 7:07 AM CDTSevere Thunderstorm WarningILXChristian, Shelby38 min
Jul 18, 7:18 AM CDTSevere Thunderstorm WarningILXCass, Morgan, Schuyler, Scott57 min
Jul 18, 8:16 AM CDTSevere Thunderstorm WarningILXCass, Morgan, Sangamon, Scott59 min
Jul 18, 8:50 AM CDTFlash Flood WarningILXShelby6 hr

Nearby

Flash Flood Warnings in Illinois, 2003Every 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; radar from the NEXRAD Level II archive.