Alert archive / Illinois / Flash Flood Warnings in 2008

Flash Flood Warning 72, NWS St. Louis, MO

July 3, 2008Madison County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 3, 2008, 7:32 PM CDT for Madison County, Illinois. It was in force for 4 hr. 2 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: Jul 3, 2008, 7:32 PM CDT (00:32 UTC)
Expired: Jul 3, 2008, 11:30 PM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

County Madison County, IL

What was reported inside it

Time	Report	Where	Remark
Jul 3, 7:35 PM CDT	FLASH FLOOD	3 E St. Jacob, IL	WALNUT RD SOUTH OF US 40 HAS SEVERAL PLACES WHERE 4 TO 6 INCHES OF FLOWING WATER COVERS THE ROAD
Jul 3, 7:40 PM CDT	FLOOD	3 S Highland, IL	3 TO 4 INCHES OF WATER OVER HIGHWAY 160 IN SEVERAL LOCATIONS

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 00:00Z, 0.5 hours before the alert went out and 177 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: 1134 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -108 m²/s²
0-3 km storm-relative helicity: 23 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 040034
FFWLSX
ILC119-040430-
/O.NEW.KLSX.FF.W.0072.080704T0032Z-080704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
732 PM CDT THU JUL 3 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 1130 PM CDT

* AT 731 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA.
  RADAR ESTIMATES OVER 2 INCHES OF RAIN HAS FALLEN IN EASTERN 
  MADISON COUNTY SINCE 6 PM.  THE RAIN WILL BE TAPERING OFF IN
  EXTREME EASTERN MADISON COUNTY BETWEEN 8 AND 830 PM...WITH AN
  ADDITIONAL ONE-HALF TO ONE INCH OF RAIN POSSIBLE BY THE TIME THE
  RAIN TAPERS OFF.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING WORDEN...PRAIRIETOWN...LIVINGSTON...DORSEY...CARPENTER
  AND ALHAMBRA.   EVEN THOUGH THE RAIN WILL BE ENDING OVER THE NEXT
  FEW HOURS...THE FLOODING THREAT WILL PERSIST AS THE RUNOFF
  CONTINUES.  SILVER CREEK IS OF PARTICULAR CONCERN...AS IS 
  HIGHWAY 40 IN SOUTHEAST MADISON COUNTY.  

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN ILLINOIS FROM EXIT 24 TO EXIT 52.
INTERSTATE 55 IN ILLINOIS FROM EXIT 23 TO EXIT 52.


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.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

LAT...LON 3866 8961 3866 9001 3900 9001 3900 8965
      3887 8965 3887 8961

$$

TRUETT

2 follow-up statements

000 
WGUS73 KLSX 040230
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
926 PM CDT THU JUL 3 2008

ILC119-040430-
/O.CON.KLSX.FF.W.0072.000000T0000Z-080704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IL-
926 PM CDT THU JUL 3 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
EASTERN MADISON COUNTY...

AT 921 PM CDT...AN AUTOMATED RIVER GAGE ALONG SILVER CREEK...JUST 
EAST OF TROY...INDICATED THAT SILVER CREEK WAS BEGINNING TO FLOOD IN 
THIS AREA.

ALTHOUGH IT APPEARS THAT ANY ADDITIONAL RAIN OVER EASTERN MADISON 
COUNTY WILL BE FAIRLY LIGHT...THE RUNOFF FROM THE DOWNPOURS OF 
EARLIER THIS EVENING WILL BE CONTINUING THE FLASH FLOOD THREAT FOR
SEVERAL MORE HOURS.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WORDEN...
PRAIRIETOWN...LIVINGSTON...DORSEY...CARPENTER AND ALHAMBRA.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN ILLINOIS FROM EXIT 24 TO EXIT 52.
INTERSTATE 55 IN ILLINOIS FROM EXIT 23 TO EXIT 52.

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.

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

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

LAT...LON 3866 8961 3866 9001 3900 9001 3900 8965
      3887 8965 3887 8961

$$

TRUETT

000 
WGUS73 KLSX 040432
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1131 PM CDT THU JUL 3 2008

ILC119-040441-
/O.EXP.KLSX.FF.W.0072.000000T0000Z-080704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IL-
1131 PM CDT THU JUL 3 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR EASTERN MADISON COUNTY...

A CHECK WITH LAW ENFORCEMENT INDICATES THAT FLOODING IS NOT A  
PROBLEM IN THE AREA.  HOWEVER...MOTORISTS IN THE EASTERN PART OF 
MADISON COUNTY SHOULD REMAIN ALERT FOR STANDING WATER ON 
ROADWAYS...ESPECIALLY IN LOW LYING AND POORLY DRAINED AREAS...AND IN 
AREAS ALONG SILVER CREEK.

LAT...LON 3866 8961 3866 9001 3900 9001 3900 8965
      3887 8965 3887 8961

$$

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 7:55 PM CDT	Flash Flood Warning	LSX	Clinton	4 hr
Jul 3, 9:04 PM CDT	Areal Flood Advisory	LSX	Saint Clair	4 hr

Nearby

Flash Flood Warnings in Illinois, 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.