Alert archive / Illinois / Flash Flood Warnings in 2008

Flash Flood Warning 50, NWS St. Louis, MO

June 6, 2008Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 6, 2008, 2:58 PM CDT for Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri. It was in force for 4 hr. 4 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: Jun 6, 2008, 2:58 PM CDT (19:58 UTC)
Expired: Jun 6, 2008, 7:00 PM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO

The radar

The St Louis radar (KLSX), 54 km from the middle of the area, began a volume at 20:00 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
Jun 6, 3:02 PM CDT	HEAVY RAIN 1	Edwardsville, IL	POWER OUT AND VERY HEAVY RAIN. IN EDWARDSVILLE.
Jun 6, 3:28 PM CDT	HEAVY RAIN 1.5	Maryville, IL	FROM THIS AFTERNOON
Jun 6, 3:30 PM CDT	HEAVY RAIN 3.25	Edwardsville, IL	3.25 INCHES OF RAIN IN ONE HOUR.
Jun 6, 4:47 PM CDT	FLASH FLOOD	Caseyville, IL	2 INCHES OF WATER COVERS RIGHT LANE OF IL 157 GOING INTO COLLINSVILLLE

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, 8.0 hours before the alert went out and 204 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: 751 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 387 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 061959
FFWLSX
ILC119-163-MOC510-070000-
/O.NEW.KLSX.FF.W.0050.080606T1958Z-080607T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
258 PM CDT FRI JUN 6 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI
  MADISON COUNTY IN SOUTHWEST ILLINOIS
  ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 700 PM CDT

* AT 255 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LINE OF SEVERE THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL.      
  FLASH FLOODING IS LIKELY TO OCCUR DUE TO THIS EXCESSIVE RAINFALL. 

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING BROOKLYN...WASHINGTON PARK...VENICE...TROY...ST. JACOB...
  ROXANA...PONTOON BEACH...MARYVILLE...MARINE...MADISON...HIGHLAND...
  GRANITE CITY...GLEN CARBON...FAIRVIEW HEIGHTS...FAIRMONT CITY...
  EDWARDSVILLE...EAST ST. LOUIS...COLLINSVILLE...CASEYVILLE...
  CARPENTER AND ALHAMBRA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 3851 9026 3852 9026 3877 9018 3878 9014
      3882 9011 3900 8965 3870 8963
TIME...MOT...LOC 1958Z 180DEG 0KT 3859 9021

$$

CVKING

2 follow-up statements

000 
WGUS73 KLSX 062228
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
525 PM CDT FRI JUN 6 2008

ILC119-163-MOC510-070000-
/O.CON.KLSX.FF.W.0050.000000T0000Z-080607T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-
525 PM CDT FRI JUN 6 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR ST. 
LOUIS CITY...MADISON AND NORTHWESTERN ST. CLAIR COUNTIES...

AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
SEVERE THUNDERSTORMS THAT PRODUCED THE TORRENTIAL RAINFALL HAVE 
MOVED EAST OF THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL 
WILL CONTINUE TO CAUSE FLASH FLOODING THROUGH THE EVENING. 

IN ADDITION...ANOTHER AREA OF HEAVY RAINFALL WILL LIKELY MOVE ACROSS 
THE AREA LATER THIS EVENING. THIS ADDITIONAL PRECIPITATION WILL 
LIKELY LEAD TO MORE FLOODING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BROOKLYN...
WASHINGTON PARK...VENICE...TROY...ST. JACOB...ROXANA...PONTOON
BEACH...MARYVILLE...MARINE...MADISON...HIGHLAND...GRANITE CITY...GLEN
CARBON...FAIRVIEW HEIGHTS...FAIRMONT CITY...EDWARDSVILLE...EAST ST.
LOUIS...COLLINSVILLE...CASEYVILLE...CARPENTER AND ALHAMBRA.

RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS 
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY 
AUTOMOBILE.

LAT...LON 3851 9026 3852 9026 3877 9018 3878 9014
      3882 9011 3900 8965 3870 8963
TIME...MOT...LOC 2225Z 180DEG 0KT 3859 9021

$$

CVKING

000 
WGUS73 KLSX 062353
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
652 PM CDT FRI JUN 6 2008

ILC119-163-MOC510-070002-
/O.EXP.KLSX.FF.W.0050.000000T0000Z-080607T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-
652 PM CDT FRI JUN 6 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM CDT FOR EASTERN ST.
LOUIS CITY...MADISON AND NORTHWESTERN ST. CLAIR COUNTIES...

THE STORMS WHICH PRODUCED THE HEAVY RAINS EARLIER HAVE CONTINUED TO 
MOVE OFF TO THE EAST. ALTHOUGH SOME PONDING OF WATER MAY STILL 
EXIST...THE THREAT OF FLASH FLOODING HAS ENDED FOR NOW.

LAT...LON 3851 9026 3852 9026 3877 9018 3878 9014
      3882 9011 3900 8965 3870 8963
TIME...MOT...LOC 2352Z 180DEG 0KT 3859 9021

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 2:52 AM CDT	Severe Thunderstorm Warning	LSX	Adams	38 min
Jun 6, 2:21 PM CDT	Tornado Warning	LSX	Monroe, Saint Clair	39 min
Jun 6, 2:54 PM CDT	Tornado Warning	LSX	Clinton, Madison, Saint Clair	51 min
Jun 6, 3:12 PM CDT	Tornado Warning	LSX	Monroe	48 min
Jun 6, 3:32 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Madison, Montgomery	43 min
Jun 6, 3:38 PM CDT	Flash Flood Warning	LSX	Bond, Clinton, Fayette, Madison, Montgomery	7 hr
Jun 6, 3:43 PM CDT	Tornado Warning	LSX	Clinton, Madison, Saint Clair	47 min
Jun 6, 3:52 PM CDT	Flash Flood Warning	LSX	Monroe, Saint Clair	4 hr
Jun 6, 4:18 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion	42 min
Jun 6, 4:22 PM CDT	Tornado Warning	LSX	Bond, Clinton	23 min
Jun 6, 4:41 PM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion	40 min
Jun 6, 4:44 PM CDT	Flash Flood Warning	LSX	Bond, Clinton, Fayette, Marion	6 hr
Jun 6, 6:27 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton	30 min
Jun 6, 4:46 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Osage	23 min
Jun 6, 10:31 AM CDT	River Flood Warning	LSX	Franklin, Warren	18 days
Jun 6, 10:31 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	31 days
Jun 6, 1:15 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Jefferson, Washington	45 min
Jun 6, 1:47 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	43 min
Jun 6, 1:51 PM CDT	Tornado Warning	LSX	Crawford	54 min
Jun 6, 1:57 PM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Washington	8 hr
Jun 6, 2:30 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Jefferson, Washington	45 min
Jun 6, 2:37 PM CDT	Flash Flood Warning	LSX	Franklin, Jefferson, Saint Louis, City of Saint Louis	4 hr
Jun 6, 2:41 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	24 min
Jun 6, 5:57 PM CDT	Tornado Warning	LSX	Crawford, Washington	48 min
Jun 6, 6:36 PM CDT	Tornado Warning	LSX	Washington	39 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.