Alert archive / Illinois / Flash Flood Warnings in 2007

Flash Flood Warning 17, NWS St. Louis, MO

June 24, 2007Macoupin County, Madison County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jun 24, 2007, 2:08 PM CDT for Macoupin County, 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 counties it named.

The facts

Issued
Jun 24, 2007, 2:08 PM CDT (19:08 UTC)
Expired
Jun 24, 2007, 6:15 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Macoupin County, IL, Madison County, IL

The radar

The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 19:09 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 12:00Z, 7.1 hours before the alert went out and 167 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 2007-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 69 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 2007-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939Sfc1 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
69 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 241908
FFWLSX
ILC117-119-242315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
208 PM CDT SUN JUN 24 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS
  NORTHERN MADISON COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 615 PM CDT

* AT 204 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING OVER THE WARNED AREA.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING WILSONVILLE...MOUNT OLIVE...GILLESPIE AND BENLD.

DO NOT 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. MOVE TO HIGHER GROUND.

LAT...LON 3887 8985 3906 8991 3914 8991 3917 8986
      3916 8971 3893 8965

$$

CARNEY
2 follow-up statements
000 
WGUS73 KLSX 242050
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
344 PM CDT SUN JUN 24 2007

ILC117-119-242315-
MADISON IL-MACOUPIN IL-
351 PM CDT SUN JUN 24 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
SOUTHEASTERN MACOUPIN AND NORTHERN MADISON COUNTIES...

AT 342 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS CONTINUED TO REPORT 
HIGH WATER OVER THE WARNED AREA.  THOUGH THE HEAVY RAIN HAS ENDED 
FOR NOW...ADDITIONAL THUNDERSTORM DEVELOPMENT IS POSSIBLE THROUGH 
EARLY EVENING.  IF THUNDERSTORMS REDEVELOP OVER THE AREA THE 
FLOODING COULD CONTINUE LATER INTO THE EVENING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WILSONVILLE...MOUNT OLIVE...GILLESPIE AND BENLD.  PEOPLE TRAVELING 
ON ILLINOIS ROUTE 4 AND OLD ROUTE 66 SHOULD BE CAUTIOUS.  
ALSO...PEOPLE WHO LIVE NEAR CAHOKIA CREEK IN SOUTHEAST MACOUPIN AND 
NORTHEAST MADISON COUNTIES SHOULD MONITOR THE WATER LEVEL CLOSELY 
AND BE PREPARED TO MOVE TO HIGHER GROUND IF THE CREEK FLOODS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3887 8985 3906 8991 3914 8991 3917 8986
      3916 8971 3893 8965

$$

CARNEY
000 
WGUS73 KLSX 242246
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
545 PM CDT SUN JUN 24 2007

ILC117-119-242255-
MADISON IL-MACOUPIN IL-
545 PM CDT SUN JUN 24 2007

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
MACOUPIN AND NORTHERN MADISON COUNTIES...

HEAVY RAIN HAS LONG ENDED ACROSS THE REGION. A RECENT CHECK WITH 
AREA LAW ENFORCEMENT INDICATES THAT FLOODING IS NO LONGER A PROBLEM 
IN THE AREA.

LAT...LON 3887 8985 3906 8991 3914 8991 3917 8986
      3916 8971 3893 8965

$$

GLASS

Nearby

Flash Flood Warnings in Illinois, 2007Every flash flood warning in 2007

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.