Alert archive / Illinois / Flash Flood Warnings in 2004

Flash Flood Warning 19, NWS St. Louis, MO

June 16, 2004Madison County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jun 16, 2004, 8:20 PM CDT for Madison County, Illinois. It was in force for 4 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 16, 2004, 8:20 PM CDT (01:20 UTC)
Expired: Jun 17, 2004, 12:15 AM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Madison County, IL

The radar

The St Louis radar (KLSX), 69 km from the middle of the area, began a volume at 01:23 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, 1.3 hours before the alert went out and 178 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: 1503 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 170124
FFWLSX
ILC119-170515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
820 PM CDT WED JUN 16 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL MADISON COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 1215 AM CDT

* AT 820 PM CDT...LAW ENFORCEMENT REPORTED FLASH FLOODING IN AND 
  AROUND THE TOWN OF WOOD RIVER...ILLINOIS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE   
  AFFECTING THE TOWNS OF WOOD RIVER...BETHALTO...HARTFORD...AND 
  ROXANA. FLOODING IS LIKELY OCCURRING ALONG INDIAN CREEK.

THUNDERSTORMS CONTINUE TO FORM ALONG A BOUNDARY THAT STRETCHES FROM 
ST. CHARLES...MISSOURI EASTWARD ACROSS THE MISSISSIPPI RIVER TO WOOD 
RIVER...ILLINOIS. RADAR ESTIMATES THAT BETWEEN 3 AND 4 INCHES OF 
RAINFALL HAS OCCURRED IN THE PAST 3 HOURS ACROSS CENTRAL MADISON 
COUNTY. 

ACT QUICKLY IF FLASH FLOODING IS OBSERVED. MOVE TO HIGHER GROUND TO 
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN 
WATER BEGINS RISING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS 
HARDER TO RECOGNIZE THE DANGERS OF FLOODING.

LAT...LON 3900 8992 3900 8977 3884 8978 3880 9011
          3893 9014

$$

CVKING

3 follow-up statements

000 
WGUS73 KLSX 170140
FFSLSX
ILC119-170515-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
835 PM CDT WED JUN 16 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL MADISON COUNTY
UNTIL 1215 AM CDT...

LAW ENFORCEMENT IN WOOD RIVER REPORTS THAT A FOOT AND A HALF OF 
WATER IS COVERING ROUTE 111. 

HEAVY RAINFALL WILL CONTINUE FOR THE NEXT HOUR AS THUNDERSTORMS 
CONTINUE TO MOVE OVER THE SATURATED AREA.

FLASH FLOODING IS OCCURRING ACROSS CENTRAL MADISON COUNTY...ACT 
QUICKLY AND MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN. BE 
ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS. 

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. AVOID BRIDGES...DIPS...
OR OTHER LOW LYING AREAS...AND NEVER DRIVE YOUR VEHICLE INTO AREAS
WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT
TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
$$

CVKING

000 
WGUS73 KLSX 170334
FFSLSX
ILC119-170515-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1035 PM CDT WED JUN 16 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MADISON COUNTY UNTIL 
1215 AM CDT...

THUNDERSTORMS THAT FORMED AND MOVED ALONG A STATIONARY BOUNDARY LATE 
THIS AFTERNOON AND EVENING HAVE MOVED SOUTH OF THE WARNED AREA.
RADAR ESTIMATED THAT NEARLY 4 INCHES OF RAINFALL OCCURRED THIS 
EVENING ACROSS A SMALL PORTION OF WEST CENTRAL MADISON 
COUNTY...WHICH INCLUDED THE TOWN OF WOOD RIVER. A NEARBY OBSERVER AT 
MELVIN PRICE LOCK AND DAM OBSERVED OVER 3 INCHES OF RAINFALL THIS 
EVENING. 

AT 1020 PM CDT...LAW ENFORCEMENT IN THE TOWN OF WOOD RIVER REPORTED 
THAT THE WATER HAD RECEEDED IN TOWN AND THAT ALL ROADS WERE AGAIN 
PASSIBLE...INCLUDING ROUTE 111.

ALTHOUGH THE THUNDERSTORMS HAVE MOVED SOUTH OF THE WARNED AREA...THE 
EXPECTED RUNOFF FROM THE EXCESSIVE RAINFALL WILL TAKE A FEW MORE 
HOURS TO DRAIN INTO LOCAL CREEKS...STREAMS...AND RIVERS. THEREFORE 
THE FLASH FLOOD WARNING WILL CONTINUE UNTIL 1215 AM FOR MADISON 
COUNTY. 

STAY AWAY FROM FLOOD WATERS...AND NEVER TRY TO DRIVE ACROSS A 
FLOODED ROADWAY.
$$

CVKING

000 
WGUS73 KLSX 170417
FFSLSX
ILC119-170515-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1115 PM CDT WED JUN 16 2004

...FLASH FLOOD WARNING FOR MADISON COUNTY ILLINOIS HAS BEEN 
CANCELLED...

WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH 
PROMPTED THE FLASH FLOOD WARNING HAVE MOVED EAST OF THE AREA AND NO 
LONGER POSE A THREAT FOR HEAVY RAIN.

LAW ENFORCEMENT IN THE TOWN OF WOOD RIVER REPORTED THAT THE WATER 
HAD RECEEDED IN TOWN AND THAT ALL ROADS WERE AGAIN 
PASSIBLE...INCLUDING ROUTE 111.

ALTHOUGH THE HEAVY RAINS HAVE ENDED AND THE WATER HAS 
RECEEDED...MOTORISTS SHOULD CONTINUE TO USE CAUTION WHILE DRIVING 
THROUGH AREAS THAT HAVE EXPERIENCED FLOODING. ROADS AND BRIDGES MAY 
HAVE BEEN DAMAGED BY RAPIDLY FLOWING FLOOD WATERS.

IN ADDITION...CHILDREN SHOULD NOT BE ALLOWED TO PLAY NEAR 
RAIN-SWOLLEN STREAMS OR DRAINAGE DITCHES.
 
$$
GKS

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 9:47 PM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	43 min

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.