Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 55, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 18, 2011, 4:31 AM CDT for Bond County, Fayette County, Illinois. It was in force for 6 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
- Jun 18, 2011, 4:31 AM CDT (09:31 UTC)
- Expired
- Jun 18, 2011, 10:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bond County, IL, Fayette County, IL
The radar
The St Louis radar (KLSX), 127 km from the middle of the area, began a volume at 09:34 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, 9.5 hours before the alert went out and 149 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
- 601 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 644 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
666
WGUS53 KLSX 180931
FFWLSX
ILC005-051-181530-
/O.NEW.KLSX.FF.W.0055.110618T0931Z-110618T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
431 AM CDT SAT JUN 18 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 1030 AM CDT
* AT 430 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. ONE TO TWO INCHES OF RAIN HAVE ALREADY FALLEN ACROSS
PORTIONS OF THE WARNED AREA WITH ANOTHER TWO INCHES EXPECTED OVER
THE NEXT COUPLE OF HOURS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GREENVILLE...BEAVER CREEK...FARINA...MULBERRY GROVE...POCAHONTAS...
RENO...SHOBONIER...SORENTO...TAMALCO AND WOBURN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.
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.
&&
LAT...LON 3883 8913 3874 8914 3874 8959 3887 8960
3889 8964 3900 8964 3900 8959 3903 8958
3903 8926 3896 8926 3897 8880 3891 8880
3891 8869 3883 8869
$$
TILLY1 follow-up statement
999
WGUS73 KLSX 181526
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1026 AM CDT SAT JUN 18 2011
ILC005-051-181541-
/O.EXP.KLSX.FF.W.0055.000000T0000Z-110618T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE IL-BOND IL-
1026 AM CDT SAT JUN 18 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR BOND AND SOUTHERN
FAYETTE COUNTIES WILL BE ALLOWED TO EXPIRE AT 1030 AM CDT...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3883 8913 3874 8914 3874 8959 3887 8960
3889 8964 3900 8964 3900 8959 3903 8958
3903 8926 3896 8926 3897 8880 3891 8880
3891 8869 3883 8869
$$
BYRDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 12:30 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 45 min |
| Jun 18, 1:14 AM CDT | Flash Flood Warning | LSX | Macoupin, Montgomery | 12 hr |
| Jun 18, 1:16 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 29 min |
| Jun 18, 2:51 AM CDT | Flash Flood Warning | LSX | Fayette, Montgomery | 6 hr |
| Jun 18, 5:01 AM CDT | Flash Flood Warning | LSX | Clinton, Marion | 6 hr |
| Jun 18, 5:10 AM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Calhoun, Greene, Pike | 65 min |
| Jun 18, 5:18 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Madison, Monroe, Saint Clair | 57 min |
| Jun 18, 5:30 AM CDT | Tornado Warning | LSX | Calhoun, Greene, Jersey, Madison, Pike | 19 min |
| Jun 18, 6:09 AM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Montgomery | 51 min |
| Jun 18, 6:20 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Monroe, Randolph, Saint Clair, Washington | 40 min |
| Jun 18, 6:21 AM CDT | Tornado Warning | LSX | Clinton, Monroe, Randolph, Saint Clair, Washington | 39 min |
| Jun 18, 6:51 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Randolph and 2 more | 54 min |
| Jun 18, 7:24 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 30 min |
| Jun 18, 1:06 PM CDT | Areal Flood Warning | LSX | Macoupin, Montgomery | 4 hr |
| Jun 18, 3:57 PM CDT | Flash Flood Watch | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 15 hr |
| Jun 18, 4:49 PM CDT | River Flood Warning | LSX | Fayette | 5 days |
| Jun 18, 5:01 PM CDT | Areal Flood Warning | LSX | Macoupin, Montgomery | 23 hr |
Nearby
Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.