Alert archive / Missouri / Flash Flood Warnings in 2011
Flash Flood Warning 17, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 25, 2011, 11:30 AM CDT for Monroe County, Randolph County, Illinois; 8 counties in Missouri. It was in force for 8 hr. 3 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 25, 2011, 11:30 AM CDT (16:30 UTC)
- Expired
- Apr 25, 2011, 7:30 PM CDT
- In force
- 8 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Monroe County, IL, Randolph County, IL, Crawford County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 121 km from the middle of the area, began a volume at 16:30 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 25, 3:37 PM CDT | FLASH FLOOD | Bonne Terre, MO | BIG RIVER FLOODED IN NORTHERN ST. FRANCOIS COUNTY...TURKEY CREEK ROAD IMPASSABLE. |
| Apr 25, 5:00 PM CDT | FLASH FLOOD | 2 Se Leadington, MO | OVER A FOOT OF WATER AT THE INTERSECTION OF FLAT RIVER ROAD AND HUNT ROAD ON THE NORTH SIDE OF FARMINGTON. IT IS STANDING WATER. |
| Apr 25, 7:27 PM CDT | HEAVY RAIN 8.42 | 2 Sse Chester, IL | BETWEEN 6 AM FRIDAY...APRIL 22ND AND 6 AM MONDAY APRIL 25TH...6.06 INCHES OF RAIN FELL. THEN AN ADDITIONAL 2.36 INCHES HAS FALLEN SINCE THIS MORNING. STILL RAINING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 4.5 hours before the alert went out and 279 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.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -261 J/kg
- Mixed-layer LCL
- 677 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 420 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
441
WGUS53 KLSX 251630
FFWLSX
ILC133-157-MOC055-093-099-123-179-186-187-221-260030-
/O.NEW.KLSX.FF.W.0017.110425T1630Z-110426T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 AM CDT MON APR 25 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
IRON COUNTY IN SOUTHEAST MISSOURI...
MADISON COUNTY IN SOUTHEAST MISSOURI...
RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
REYNOLDS COUNTY IN SOUTHEAST MISSOURI...
SOUTHERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
SOUTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
SOUTHERN MONROE COUNTY IN SOUTHWEST ILLINOIS...
ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 730 PM CDT MONDAY
* AT 1128 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED LIGHT TO MODERATE RAIN HAS BEEN FALLING OVER THE
AREA THROUGHOUT THE MORNING. HOWEVER...INTENSE THUNDERSTORMS
WITH TORRENTIAL RAINS WILL BE DEVELOPING OVER THE AREA THIS
AFTERNOON AND INTO THE EARLY EVENING HOURS.
THE DANGER OF THIS FLASH FLOOD SITUATION CANNOT BE
OVER-EMPHASIZED...THIS IS TRULY A LIFE-THREATENING WEATHER
EVENT! THOSE LIVING IN FLOOD PRONE AREAS SHOULD EVACUATE NOW...
IF THEY HAVE NOT ALREADY DONE SO. BE AWARE THAT EVACUATION ROUTES
MAY BECOME BLOCKED AS THE HEAVY RAIN INTENSIFIES THIS AFTERNOON
AND EARLY THIS EVENING...AND MANY MANY ROADS ARE ALREADY CLOSED
DUE TO FLOODING.
RAINFALLS OF 2 TO 4 INCHES WILL BE POSSIBLE BY THE TIME THE RAIN
DIMINISHES LATER THIS EVENING.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ANTHONIES MILL...BISMARCK...BONNE TERRE...CHESTER...CRYSTAL CITY...
DE SOTO...DESLOGE...FARMINGTON...FESTUS...FREDERICKTOWN...
IRONTON...LEADWOOD...POTOSI...RED BUD...SPARTA...STE. GENEVIEVE...
STEELVILLE...ANNAPOLIS...ARCADIA...BALDWIN...BELLEVIEW...BIXBY...
BLOOMSDALE...BREMEN...BUCKHORN...CHERRYVILLE...COFFMAN...
COULTERVILLE...COURTOIS AND ELLINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
UNDER NO CIRCUMSTANCES SHOULD YOU DRIVE YOUR CAR THROUGH FLOOD
WATERS. IF YOUR ROUTE IS BLOCKED BY FLOOD WATERS...TRY TO FIND
ANOTHER ROUTE. IF YOU BECOME STRANDED BY HIGH WATER...CALL 9-1-1
AND ASK FOR ASSISTANCE.
&&
LAT...LON 3706 9097 3720 9114 3750 9122 3754 9132
3760 9132 3760 9117 3769 9117 3770 9132
3778 9133 3779 9154 3799 9154 3823 9058
3821 8959 3795 8960 3781 8969 3788 8993
3765 9014 3732 9015 3727 9073 3705 9079
$$
TRUETT2 follow-up statements
167
WGUS73 KLSX 252009
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
309 PM CDT MON APR 25 2011
ILC133-157-MOC055-093-099-123-179-186-187-221-260030-
/O.CON.KLSX.FF.W.0017.000000T0000Z-110426T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDOLPH IL-MONROE IL-REYNOLDS MO-MADISON MO-IRON MO-ST. FRANCOIS MO-
STE. GENEVIEVE MO-WASHINGTON MO-CRAWFORD MO-JEFFERSON MO-
309 PM CDT MON APR 25 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN JEFFERSON...
SOUTHERN CRAWFORD...WASHINGTON...STE. GENEVIEVE...ST. FRANCOIS...
IRON...MADISON...REYNOLDS...SOUTHERN MONROE AND RANDOLPH COUNTIES
UNTIL 730 PM CDT...
EARLIER TODAY...EMERGENCY MANAGEMENT REPORTED THE DAM AT IRON
MOUNTAIN LAKE IN SOUTHWESTERN ST. FRANCOIS COUNTY IS LEAKING. OVER
THE WEEKEND...WORKERS WERE ABLE TO REDUCE THE LAKE'S POOL LEVEL BY
REMOVING DRAINAGE PLUGS. HOWEVER...WITH ADDITIONAL RAINFALL OF TWO
TO FOUR INCHES LIKELY THIS AFTERNOON AND TONIGHT...PRESSURE ON THIS
DAM WILL LIKELY INCREASE.
SHOULD THIS DAM FAIL...THE OVERFLOW WILL RUN DOWN INDIAN CREEK
TOWARD ITS CONFLUENCE WITH THE ST. FRANCOIS RIVER. ROADS THAT WILL
BE THREATENED BY SUCH A FAILURE INCLUDE INDIAN CREEK ROAD...MISSOURI
ROUTE NN...LAKE AVALON ROAD...AND LOUGHBORO ROAD AT THE RITTER CREEK
BRIDGE CROSSING.
THIS IS A POTENTIALLY DANGEROUS SITUATION. ALL PRECAUTIONS SHOULD
BE TAKEN IMMEDIATELY TO PROTECT LIFE AND PROPERTY IN THIS AREA. IT
IS UNLIKELY THAT ADDITIONAL INFORMATION COULD BE BROADCAST IN TIME
BEFORE THE FLOOD WAVE WOULD BEGIN AFFECTING THE AREA SHOULD THE DAM
FAIL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS.
&&
LAT...LON 3706 9097 3720 9114 3750 9122 3754 9132
3760 9132 3760 9117 3769 9117 3770 9132
3778 9133 3779 9154 3799 9154 3823 9058
3821 8959 3795 8960 3781 8969 3788 8993
3765 9014 3732 9015 3727 9073 3705 9079
$$
FUCHS/CARNEY583
WGUS73 KLSX 252154
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
454 PM CDT MON APR 25 2011
ILC133-157-MOC055-093-099-123-179-186-187-221-260030-
/O.CON.KLSX.FF.W.0017.000000T0000Z-110426T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDOLPH IL-MONROE IL-REYNOLDS MO-MADISON MO-IRON MO-ST. FRANCOIS MO-
STE. GENEVIEVE MO-WASHINGTON MO-CRAWFORD MO-JEFFERSON MO-
454 PM CDT MON APR 25 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN JEFFERSON...
SOUTHERN CRAWFORD...WASHINGTON...STE. GENEVIEVE...ST. FRANCOIS...
IRON...MADISON...REYNOLDS...SOUTHERN MONROE AND RANDOLPH COUNTIES
UNTIL 730 PM CDT...
AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED YET
ANOTHER WAVE OF THUNDERSTORMS WITH EXTREMELY HEAVY RAIN MOVING FROM
SOUTH CENTRAL INTO SOUTHEAST MISSOURI. RAINS BETWEEN ONE-HALF AND
ONE INCH HAVE OCCURRED OVER THE EASTERN OZARKS THIS AFTERNOON...AND
ADDITIONAL HEAVY RAIN WILL OCCUR THIS EVENING.
DUE TO THE EXTREMELY DANGEROUS COMBINATION OF SATURATED GROUND AND
TORRENTIAL DOWNPOURS...THIS IS A LIFE-THREATENING EVENT. THOSE THAT
LIVE IN FLOOD PRONE AREAS SHOULD EVACUATE AND MOVE TO HIGHER GROUND
IF THEY HAVE NOT ALREADY DONE SO. REMEMBER...DARKNESS MAKES
EVACUATIONS MORE DIFFICULT...AND ITS ALSO VERY POSSIBLE THAT
EVACUATION ROUTES WILL BECOME FLOODED AND IMPASSIBLE.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ANTHONIES MILL...BISMARCK...BONNE TERRE...CHESTER...CRYSTAL CITY...DE
SOTO...DESLOGE...FARMINGTON...FESTUS...FREDERICKTOWN...IRONTON...
LEADWOOD...POTOSI...RED BUD...SPARTA...STE. GENEVIEVE...STEELVILLE...
ANNAPOLIS...ARCADIA...BALDWIN...BELLEVIEW...BIXBY...BLOOMSDALE...
BREMEN...BUCKHORN...CHERRYVILLE...COFFMAN...COULTERVILLE...COURTOIS
AND ELLINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
UNDER NO CIRCUMSTANCES SHOULD YOU DRIVE YOUR CAR THROUGH FLOOD
WATERS. OBEY ALL ROAD CLOSED SIGNS AND BARRICADES...AS THEY HAVE
BEEN PLACED THEIR TO INSURE YOUR SAFETY. IF YOUR ROUTE IS BLOCKED
BY FLOOD WATERS...TRY TO FIND ANOTHER ROUTE. IF YOU BECOME STRANDED
BY HIGH WATER...CALL 9-1-1 AND ASK FOR ASSISTANCE.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS.
&&
LAT...LON 3706 9097 3720 9114 3750 9122 3754 9132
3760 9132 3760 9117 3769 9117 3770 9132
3778 9133 3779 9154 3799 9154 3823 9058
3821 8959 3795 8960 3781 8969 3788 8993
3765 9014 3732 9015 3727 9073 3705 9079
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 5:50 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 40 min |
| Apr 25, 6:15 PM CDT | Tornado Warning | LSX | Madison | 15 min |
Nearby
Flash Flood Warnings in Missouri, 2011Flash Flood Warnings in Illinois, 2011Every flash flood warning in 2011
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.