Alert archive / Illinois / Flash Flood Warnings in 2008

Flash Flood Warning 22, NWS St. Louis, MO

April 10, 200812 counties in Illinois; 5 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at Apr 10, 2008, 8:24 AM CDT for 12 counties in Illinois; 5 counties in Missouri. It was in force for 3 hr. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 10, 2008, 8:24 AM CDT (13:24 UTC)
Expired: Apr 10, 2008, 11:52 AM CDT
In force: 3 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Montgomery County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Lincoln County, MO, Pike County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 51 km from the middle of the area, began a volume at 13:23 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.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 8:34 AM CDT	HEAVY RAIN 1.1	St. Peters, MO
Apr 10, 8:49 AM CDT	HEAVY RAIN 1.13	Lebanon, IL
Apr 10, 9:14 AM CDT	HEAVY RAIN 1.2	Aviston, IL
Apr 10, 9:30 AM CDT	HEAVY RAIN 1.03	2 Sw Lake St. Louis, MO
Apr 10, 11:15 AM CDT	HEAVY RAIN 0	1 Sw Fenton, MO	TOTAL RAINFALL 2.05 INCHES OF RAIN FELL SOUTHWEST OF FENTON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.4 hours before the alert went out and 194 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 451 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 158 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 101330
FFWLSX
ILC005-013-027-051-061-083-117-119-121-135-163-189-MOC113-163-183-
189-510-101930-
/O.NEW.KLSX.FF.W.0022.080410T1324Z-080410T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
824 AM CDT THU APR 10 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LINCOLN COUNTY IN EAST CENTRAL MISSOURI
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI
  PIKE COUNTY IN NORTHEAST MISSOURI
  BOND COUNTY IN SOUTH CENTRAL ILLINOIS
  CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS
  FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS
  MARION COUNTY IN SOUTH CENTRAL ILLINOIS
  MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS
  WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS
  GREENE COUNTY IN SOUTHWEST ILLINOIS
  JERSEY COUNTY IN SOUTHWEST ILLINOIS
  MACOUPIN COUNTY IN SOUTHWEST ILLINOIS
  MADISON COUNTY IN SOUTHWEST ILLINOIS
  ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 230 PM CDT THURSDAY

* ONE ROUND OF HEAVY RAIN HAS MOVED THROUGH THE AREA THIS 
  MORNING...AND NATIONAL WEATHER SERVICE DOPPLER RADARS
  THROUGHOUT THE REGION INDICATE THAT ANOTHER ROUND OF VERY
  HEAVY RAIN WILL BE PUSHING INTO THE AREA DURING THE REMAINDER
  OF THE MORNING.  WIDESPREAD ADDITIONAL RAINS OF
  1 TO 2 INCHES ARE LIKELY...WITH SOME AREAS IN EAST CENTRAL
  MISSOURI AND SOUTHERN ILLINOIS RECEIVING HEAVIER AMOUNTS
  IN LOCALIZED AREAS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING  WHITE HALL...VIRDEN...VANDALIA...STAUNTON...
  ROODHOUSE...RAYMOND...PALMYRA...NOKOMIS...LITCHFIELD...
  JERSEYVILLE...HILLSBORO...HARDIN...GRAFTON...
  GODFREY...GIRARD...GILLESPIE...FARMERSVILLE...COFFEEN...
  CARROLLTON...CARLINVILLE...BUNKER HILL...BRIGHTON...
  WINFIELD...TROY...LOUISIANA...HAWK POINT...ELSBERRY...
  CLARKSVILLE AND BOWLING GREEN.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 203 TO EXIT 231.
INTERSTATE 70 IN ILLINOIS FROM EXIT 21 TO EXIT 76.
INTERSTATE 44 FROM EXIT 261 TO EXIT 277.
INTERSTATE 55 IN ILLINOIS FROM EXIT 23 TO EXIT 63.
INTERSTATE 57 FROM EXIT 109 TO EXIT 135.
INTERSTATE 64 IN ILLINOIS FROM EXIT 9 TO EXIT 61.

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.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

LAT...LON 3847 8914 3821 8916 3823 8990 3851 9026
      3840 9033 3850 9041 3846 9073 3863 9074
      3855 9097 3886 9097 3915 9141 3946 9147
      3960 9120 3939 9075 3952 9058 3953 8955
      3935 8953 3935 8914 3921 8881 3848 8870
TIME...MOT...LOC 1324Z 180DEG 0KT 3895 9083

$$

TRUETT

1 follow-up statement

000 
WGUS73 KLSX 101652
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1149 AM CDT THU APR 10 2008

ILC005-013-027-051-061-083-117-119-121-133-135-149-163-189-MOC099-
113-139-163-183-189-510-101659-
/O.CAN.KLSX.FF.W.0022.000000T0000Z-080410T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY IL-WASHINGTON IL-MONROE IL-ST. CLAIR IL-CLINTON IL-
MARION IL-MADISON IL-BOND IL-FAYETTE IL-JERSEY IL-CALHOUN IL-
GREENE IL-MACOUPIN IL-PIKE IL-JEFFERSON MO-ST. LOUIS CITY MO-
ST. LOUIS MO-ST. CHARLES MO-MONTGOMERY MO-LINCOLN MO-PIKE MO-
1149 AM CDT THU APR 10 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR FAYETTE...BOND...
MARION...CLINTON...WASHINGTON AND MONTGOMERY COUNTIES IN SOUTH
CENTRAL ILLINOIS...AND MACOUPIN...GREENE...CALHOUN...JERSEY...
MADISON...ST. CLAIR AND NORTHEASTERN MONROE COUNTIES IN SOUTHWEST
ILLINOIS...AND SOUTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...AND
LINCOLN...NORTHERN MONTGOMERY...ST. CHARLES...ST. LOUIS...ST. LOUIS
CITY AND NORTHEASTERN JEFFERSON COUNTIES IN EAST CENTRAL MISSOURI...
AND PIKE COUNTY IN NORTHEAST MISSOURI...

A CHECK WITH AREA LAW ENFORCEMENT INDICATES THAT NO FLASH FLOODING 
IS OCCURRING IN THE WARNED AREA AND RADAR INDICATES THE HEAVIEST 
RAINFALL IS SHIFTING EAST OF THE AREA. RUNOFF FROM OVERNIGHT AND 
MORNING RAINFALL WILL CAUSE RISES IN LOCAL STREAMS AND CREEKS BUT 
FLASH FLOODING IS NOT ANTICIPATED.

ANOTHER ROUND OF THUNDERSTORMS...CAPABLE OF PRODUCING LOCALLY HEAVY 
RAINFALL...IS EXPECTED THIS AFTERNOON AND EVENING ACROSS THE AREA. 
THEREFORE...THE FLASH FLOOD WATCH WILL REMAIN IN EFFECT.

LAT...LON 3847 8914 3821 8916 3823 8990 3851 9026
      3840 9033 3850 9041 3846 9073 3863 9074
      3855 9097 3886 9097 3915 9141 3946 9147
      3960 9120 3939 9075 3952 9058 3953 8955
      3935 8953 3935 8914 3921 8881 3848 8870
TIME...MOT...LOC 1649Z 180DEG 0KT 3895 9083

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 8:26 PM CDT	River Flood Warning	LSX	Brown	38 hr
Apr 9, 8:31 PM CDT	River Flood Warning	LSX	Fayette	6 days
Apr 9, 10:13 PM CDT	River Flood Warning	LSX	Madison	42 days
Apr 9, 10:13 PM CDT	River Flood Warning	LSX	Saint Clair	7 days
Apr 9, 10:13 PM CDT	River Flood Warning	LSX	Randolph	45 days
Apr 10, 12:25 AM CDT	River Flood Warning	LSX	Adams	42 days
Apr 10, 5:10 AM CDT	Flash Flood Warning	LSX	Monroe, Randolph	6 hr
Apr 10, 11:34 AM CDT	River Flood Warning	LSX	Brown	11 hr
Apr 10, 5:15 PM CDT	Severe Thunderstorm Warning	LSX	Adams	60 min
Apr 10, 5:32 PM CDT	Severe Thunderstorm Warning	LSX	Adams	58 min
Apr 10, 5:40 PM CDT	Tornado Warning	LSX	Adams	32 min
Apr 10, 6:27 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown	51 min
Apr 9, 8:08 PM CDT	River Flood Warning	LSX	Reynolds	60 hr
Apr 9, 8:40 PM CDT	River Flood Warning	LSX	Osage	5 days
Apr 9, 8:40 PM CDT	River Flood Warning	LSX	Cole	67 hr
Apr 9, 9:15 PM CDT	River Flood Warning	LSX	Lincoln	4 days
Apr 9, 9:15 PM CDT	River Flood Warning	LSX	Lewis	71 hr
Apr 9, 9:15 PM CDT	River Flood Warning	LSX	Marion	35 hr
Apr 9, 9:15 PM CDT	River Flood Warning	LSX	Marion	61 hr
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Crawford	63 hr
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Crawford, Washington	71 hr
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Franklin, Jefferson	4 days
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	5 days
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	6 days
Apr 9, 9:43 PM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	41 days
Apr 9, 9:49 PM CDT	River Flood Warning	LSX	Jefferson	3 days
Apr 9, 9:49 PM CDT	River Flood Warning	LSX	Franklin	3 days
Apr 10, 3:21 AM CDT	River Flood Warning	LSX	Osage	30 hr
Apr 10, 8:51 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	39 min
Apr 10, 9:29 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Saint Francois	46 min
Apr 10, 10:03 AM CDT	River Flood Warning	LSX	Lincoln	35 hr
Apr 10, 10:55 AM CDT	River Flood Warning	LSX	Callaway, Cole	5 hr
Apr 10, 10:55 AM CDT	River Flood Warning	LSX	Callaway, Osage	3 days
Apr 10, 10:55 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	6 days
Apr 10, 10:55 AM CDT	River Flood Warning	LSX	Franklin, Warren	3 days
Apr 10, 10:55 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	4 days
Apr 10, 11:02 AM CDT	Flash Flood Warning	LSX	Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois	3 hr
Apr 10, 4:31 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	44 min
Apr 10, 4:43 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Shelby	47 min
Apr 10, 4:49 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Monroe	37 min
Apr 10, 5:22 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	38 min
Apr 10, 6:02 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	25 min

Nearby

Flash Flood Warnings in Illinois, 2008 Flash Flood Warnings in Missouri, 2008 Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.