Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 24, NWS St. Louis, MO

June 12, 2002Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jun 12, 2002, 12:35 AM CDT for Adams County, Brown County, Pike 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 12, 2002, 12:35 AM CDT (05:35 UTC)
Expired
Jun 12, 2002, 3:30 AM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Adams County, IL, Brown County, IL, Pike County, IL

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.6 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-pSkew-T log-p diagram, Davenport, at 00:00Z on 2002-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 264 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2002-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
264 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 120535
FFWSTL
ILC001-009-149-120830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1230 AM CDT WED JUN 12 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS
  BROWN COUNTY IN WEST CENTRAL ILLINOIS
  PIKE COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 330 AM CDT

* AT 1230 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN AND AROUND ADAMS COUNTY 
AND BROWN COUNTY CENTERED FROM 20 MILES NORTHEAST OF QUINCY 
SOUTHEAST TO MOUNT STERLING. 

COPIOUS RAINFALL IS OCCURRING WITH THESE STORMS. THEY ARE SETTLING 
SOUTHEAST AT 20 MPH AND WILL MOVE TOWARD PIKE COUNTY DURING THE WEE 
HOURS OF THE MORNING. RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE LIKELY 
IN TWO HOURS OR LESS. RAINFALL TOTALS COULD EXCEED 5 INCHES IN A FEW 
COMMUNITIES. 

FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE   
AFFECTING MOUNT STERLING...GOLDEN...CAMP POINT...AND OTHER 
COMMUNITIES IN THE AREA.  SIGNIFICANT RISES AND FLOODING CAN BE
EXPECTED IN THE SOUTH FORK OF BEAR CREEK AND IN MC KEE CREEK.  MAJOR 
RUNOFF WILL ALSO AFFECT THE LA MOINE RIVER AS WELL.

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

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.

$$
PEDIGO

Nearby

Flash Flood Warnings in Illinois, 2002Every flash flood warning in 2002

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.