Alert archive / Illinois / Flash Flood Warnings in 2003

Flash Flood Warning 23, NWS St. Louis, MO

June 26, 2003Calhoun County, Jersey County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jun 26, 2003, 12:28 AM CDT for Calhoun County, Jersey 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 counties it named.

The facts

Issued: Jun 26, 2003, 12:28 AM CDT (05:28 UTC)
Expired: Jun 26, 2003, 3:30 AM CDT
In force: 3 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Calhoun County, IL, Jersey County, IL

The radar

The St Louis radar (KLSX), 50 km from the middle of the area, began a volume at 05:31 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, 5.5 hours before the alert went out and 199 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: 843 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1649 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 260534
FFWLSX
ILC013-083-260830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1228 AM CDT THU JUN 26 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS
  JERSEY COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 330 AM CDT

* AT 1228 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN AND AROUND  DEER PLAIN 
AND BATCHTOWN IN SOUTHERN CALHOUN COUNTY AND NEAR FIELDON IN JERSEY 
COUNTY. MODERATE TO HEAVY RAIN WILL CONTINUE ACROSS THE AREA FOR THE 
NEXT SEVERAL HOURS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE   
AFFECTING ROADS AND STREAMS NEAR 
BATCHTOWN...ROSEDALE...OTTERVILLE...AND NEAR FIELDON.
 

IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER
GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW WATER CROSSINGS IF WATER COVERS THE
ROADWAY. DO NOT DRIVE AROUND BARRICADES IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. 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.

$$

WDB

1 follow-up statement

000 
WGUS73 KLSX 260835
FFSLSX
ILC013-083-260845-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
334 AM CDT THU JUN 26 2003

...FLASH FLOOD WARNING FOR JERSEY AND CALHOUN COUNTIES HAS EXPIRED...

WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS AND 
HEAVY RAIN WHICH PROMPTED THE FLASH FLOOD WARNING HAVE ENDED...AND 
NO ADDITIONAL HEAVY RAIN IS EXPECTED.  A CHECK WITH THE CALHOUN AND 
JERSEY COUNTY SHERIFFS DEPARTMENTS INDICATED THAT FLOODING WAS NO 
LONGER A PROBLEM.

ALTHOUGH THE HEAVY RAINS HAVE SUBSIDED...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.

$$

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 1:13 AM CDT	Flash Flood Warning	LSX	Monroe	6 hr
Jun 26, 1:41 AM CDT	Flash Flood Warning	LSX	Macoupin, Madison, Saint Clair	6 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; radar from the NEXRAD Level II archive.