Alert archive / Illinois / Flash Flood Warnings in 2018
Flash Flood Warning 12, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 12, 2018, 5:27 AM CDT for Fayette County, Marion 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 12, 2018, 5:27 AM CDT (10:27 UTC)
- Expired
- Jun 12, 2018, 11:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Fayette County, IL, Marion County, IL
The radar
The Evansville,IN radar (KVWX), 126 km from the middle of the area, began a volume at 10:28 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, 10.5 hours before the alert went out and 152 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
- 431 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
848
WGUS53 KLSX 121027
FFWLSX
ILC051-121-121630-
/O.NEW.KLSX.FF.W.0012.180612T1027Z-180612T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
527 AM CDT TUE JUN 12 2018
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Northern Marion County in south central Illinois...
Southern Fayette County in south central Illinois...
* Until 1130 AM CDT Tuesday.
* At 525 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to three inches of rain have
already fallen in the past one to two hours. Flash flooding is
expected to begin shortly.
* Some locations that will experience flooding include...
Salem, Vandalia, St. Elmo, Kinmundy, Brownstown, Patoka, Farina,
Omega, Fairman, Stephen Forbes Station, Shobonier, Avena, Tonti, La
Clede, Pittsburg, Shafter, St. Peter, Alma, Vernon and Loogootee.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area in the next two hours.
This includes the following highways...
Interstate 70 in Illinois between exits 61 and 76.
Interstate 57 in Illinois between exits 127 and 135.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3865 8914 3874 8914 3875 8924 3904 8925
3904 8880 3891 8881 3891 8869 3864 8870
$$
GKS2 follow-up statements
581
WGUS73 KLSX 121332
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
832 AM CDT TUE JUN 12 2018
ILC051-121-121630-
/O.CON.KLSX.FF.W.0012.000000T0000Z-180612T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IL-Fayette IL-
832 AM CDT TUE JUN 12 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM CDT FOR
NORTHERN MARION AND SOUTHERN FAYETTE COUNTIES...
At 830 AM CDT, Doppler radar indicated anywhere from 2 to over 5
inches of rainfall had fallen overnight in the warned area. The
thunderstorms have stopped, but flash flooding is likely still
ongoing.
Some locations that will experience flooding include...
Salem, Vandalia, St. Elmo, Kinmundy, Brownstown, Patoka, Farina,
Omega, Fairman, Stephen Forbes Station, Shobonier, Avena, Tonti, La
Clede, Pittsburg, Shafter, St. Peter, Alma, Vernon and Loogootee.
This includes the following highways...
Interstate 70 in Illinois between exits 61 and 76.
Interstate 57 in Illinois between exits 127 and 135.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3865 8914 3874 8914 3875 8924 3904 8925
3904 8880 3891 8881 3891 8869 3864 8870
$$
KD012
WGUS73 KLSX 121629 RRA
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
1129 AM CDT TUE JUN 12 2018
ILC051-121-121639-
/O.EXP.KLSX.FF.W.0012.000000T0000Z-180612T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IL-Fayette IL-
1129 AM CDT TUE JUN 12 2018
...THE FLASH FLOOD WARNING FOR NORTHERN MARION AND SOUTHERN FAYETTE
COUNTIES WILL EXPIRE AT 1130 AM CDT...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3865 8914 3874 8914 3875 8924 3904 8925
3904 8880 3891 8881 3891 8869 3864 8870
$$
KDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 7:02 PM CDT | Special Weather Statement | LSX | Bond | 28 min |
| Jun 11, 7:33 PM CDT | Special Weather Statement | LSX | Fayette | 42 min |
| Jun 11, 7:58 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 47 min |
| Jun 11, 8:01 PM CDT | Flash Flood Warning | LSX | Bond, Clinton, Fayette, Marion | 6 hr |
| Jun 12, 2:44 AM CDT | Special Weather Statement | LSX | Montgomery | 61 min |
| Jun 12, 4:27 AM CDT | Areal Flood Advisory | LSX | Fayette, Marion | 3 hr |
| Jun 12, 6:31 AM CDT | Flash Flood Warning | LSX | Fayette | 5 hr |
| Jun 12, 12:29 PM CDT | River Flood Warning | LSX | Fayette | 4 days |
Nearby
Flash Flood Warnings in Illinois, 2018Every flash flood warning in 2018
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.