Alert archive / Illinois / Flash Flood Warnings in 2012
Flash Flood Warning 22, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at May 20, 2012, 7:05 PM CDT for Fayette 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 outline as issued.
The facts
- Issued
- May 20, 2012, 7:05 PM CDT (00:05 UTC)
- Expired
- May 20, 2012, 11:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Fayette County, IL
The radar
The Evansville,IN radar (KVWX), 132 km from the middle of the area, began a volume at 00:07 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 00:00Z, 0.1 hours before the alert went out and 139 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
- 35 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 2073 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
864
WGUS53 KLSX 210005
FFWLSX
ILC051-210400-
/O.NEW.KLSX.FF.W.0022.120521T0005Z-120521T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
705 PM CDT SUN MAY 20 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 1100 PM CDT
* AT 702 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. THE HEAVIEST RAINFALL HAS BEEN ALONG THE US-40 AND
INTERSTATE HIGHWAY 70 CORRIDORS WHERE RADAR HAS ESTIMATED AROUND
TWO INCHES OF RAINFALL HAS FALLEN BETWEEN 530 PM AND 7 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
VANDALIA...BROWNSTOWN...FARINA...RAMSEY...SHOBONIER...ST. ELMO AND
WRIGHTS CORNER.
ADDITIONAL SLOW MOVING AND...AS A RESULT...HEAVY RAINFALL PRODUCING
THUNDERSTORMS ARE LINING UP TO THE WEST AND SO ADDITIONAL RAINFALL
FOR THE NEXT COUPLE OF HOURS CAN BE EXPECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 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.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.
&&
LAT...LON 3883 8913 3874 8914 3874 8925 3922 8925
3922 8881 3911 8880 3891 8881 3891 8870
3883 8869
$$
TES2 follow-up statements
175
WGUS73 KLSX 210209
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
909 PM CDT SUN MAY 20 2012
ILC051-210400-
/O.CON.KLSX.FF.W.0022.000000T0000Z-120521T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE IL-
909 PM CDT SUN MAY 20 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR FAYETTE COUNTY UNTIL
1100 PM CDT...
AT 904 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL HAVE BEEN MOVING ACROSS
FAYETTE COUNTY SINCE 5 PM. FROM 5 PM TO 9 PM...THE RADAR ESTIMATES
BETWEEN TWO AND THREE INCHES OF RAINFALL HAVE FALLEN...MOST NOTABLY
ALONG THE US-40 AND INTERSTATE-70 CORRIDORS WHERE WATER OVER THE
ROADWAY WAS NOTED.
ADDITIONAL THUNDERSTORMS ARE EXPECTED TO ROLL THROUGH THE AREA
THROUGH MIDNIGHT...BUT ADDITIONAL HEAVY RAINFALL AMOUNTS ARE NOT
EXPECTED.
RUNOFF FROM THIS EXCESSIVE RAINFALL MAY STILL CAUSE FLASH FLOODING
TO OCCUR ALONG SMALL CREEKS AND STREAMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS.
&&
LAT...LON 3883 8913 3874 8914 3874 8925 3922 8925
3922 8881 3911 8880 3891 8881 3891 8870
3883 8869
$$
TES894
WGUS73 KLSX 210400
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1100 PM CDT SUN MAY 20 2012
ILC051-210415-
/O.EXP.KLSX.FF.W.0022.000000T0000Z-120521T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE IL-
1100 PM CDT SUN MAY 20 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR FAYETTE COUNTY HAS
BEEN ALLOWED TO EXPIRE...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3883 8913 3874 8914 3874 8925 3922 8925
3922 8881 3911 8880 3891 8881 3891 8870
3883 8869
$$
TESNearby
Flash Flood Warnings in Illinois, 2012Every flash flood warning in 2012
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.