Alert archive / Illinois / Flash Flood Warnings in 2019
Flash Flood Warning 45, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 21, 2019, 11:38 PM CDT for 4 counties in Illinois. It was in force for 7 hr. 1 report 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
- Aug 21, 2019, 11:38 PM CDT (04:38 UTC)
- Expired
- Aug 22, 2019, 6:30 AM CDT
- In force
- 7 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Marion County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 22, 12:00 AM CDT | FLASH FLOOD | Alma, IL | NUMEROUS FLOODED ROADS AND STRANDED VEHICLES. |
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, 4.6 hours before the alert went out and 154 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
- 1002 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
600
WGUS53 KLSX 220438
FFWLSX
ILC005-027-051-121-221130-
/O.NEW.KLSX.FF.W.0045.190822T0438Z-190822T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
1138 PM CDT Wed Aug 21 2019
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Northeastern Clinton County in south central Illinois...
Bond County in south central Illinois...
Northern Marion County in south central Illinois...
Southern Fayette County in south central Illinois...
* Until 630 AM CDT Thursday.
* At 1136 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to two inches of rain have
already fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Salem, Vandalia, Greenville, Kinmundy, Pocahontas, Brownstown,
Mulberry Grove, Patoka, Tamalco, Farina, Omega, Sorento, Beaver
Creek, Stephen Forbes Station, Shobonier, Woburn, Fairman, Boulder,
Reno and Jamestown.
This includes the following highways...
Interstate 70 in Illinois between exits 36 and 68.
Interstate 57 in Illinois between exits 127 and 135.
This also includes Carlyle Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3872 8960 3887 8960 3888 8963 3900 8964
3901 8881 3891 8881 3891 8869 3862 8870
$$
Britt2 follow-up statements
284
WGUS73 KLSX 220722
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
222 AM CDT Thu Aug 22 2019
ILC005-027-051-121-221130-
/O.CON.KLSX.FF.W.0045.000000T0000Z-190822T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton IL-Bond IL-Marion IL-Fayette IL-
222 AM CDT Thu Aug 22 2019
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR
NORTHEASTERN CLINTON...BOND...NORTHERN MARION AND SOUTHERN FAYETTE
COUNTIES...
At 214 AM CDT, Doppler radar and automated rain gauges indicated
showers and scattered thunderstorms moving across the warned area.
Between 2 and 4 inches of rain has already fallen. Stream gages in
northern Marion County are near flood stage. Additional
showers and thunderstorms will move across the warned area through
daybreak.
Some locations that will experience flooding include...
Salem, Vandalia, Greenville, Kinmundy, Pocahontas, Brownstown,
Mulberry Grove, Patoka, Tamalco, Farina, Omega, Sorento, Beaver
Creek, Stephen Forbes Station, Shobonier, Woburn, Fairman, Boulder,
Reno and Jamestown.
This includes the following highways...
Interstate 70 in Illinois between exits 36 and 68.
Interstate 57 in Illinois between exits 127 and 135.
This also includes Carlyle Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3872 8960 3887 8960 3888 8963 3900 8964
3901 8881 3891 8881 3891 8869 3862 8870
$$
Britt155
WGUS73 KLSX 221124
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
624 AM CDT Thu Aug 22 2019
ILC005-027-051-121-221134-
/O.EXP.KLSX.FF.W.0045.000000T0000Z-190822T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton IL-Bond IL-Marion IL-Fayette IL-
624 AM CDT Thu Aug 22 2019
...THE FLASH FLOOD WARNING FOR NORTHEASTERN CLINTON...BOND...NORTHERN
MARION AND SOUTHERN FAYETTE COUNTIES WILL EXPIRE AT 630 AM CDT...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3872 8960 3887 8960 3888 8963 3900 8964
3901 8881 3891 8881 3891 8869 3862 8870
$$
BrittThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 10:30 PM CDT | Flash Flood Warning | LSX | Clinton, Madison, Marion, Monroe, Saint Clair, Washington | 8 hr |
Nearby
Flash Flood Warnings in Illinois, 2019Every flash flood warning in 2019
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.