Alert archive / Illinois / Flash Flood Warnings in 2021
Flash Flood Warning 44, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Oct 24, 2021, 5:14 PM CDT for Brown County, Pike 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
- Oct 24, 2021, 5:14 PM CDT (22:14 UTC)
- Expired
- Oct 24, 2021, 9:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Brown County, IL, Pike County, IL
The radar
The Lincoln radar (KILX), 112 km from the middle of the area, began a volume at 22:18 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
Davenport, (KDVN), launched 12:00Z, 10.2 hours before the alert went out and 190 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
749
WGUS53 KLSX 242214
FFWLSX
ILC009-149-250215-
/O.NEW.KLSX.FF.W.0044.211024T2214Z-211025T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
514 PM CDT Sun Oct 24 2021
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Southern Brown County in west central Illinois...
Northeastern Pike County in west central Illinois...
* Until 915 PM CDT.
* At 514 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. The expected rainfall rate is 1
to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2
inches are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
La Grange, Versailles, Perry, Chambersburg, Coopertown and
Fishhook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3988 9092 4000 9060 3999 9061 3998 9061
3998 9059 3998 9057 3998 9052 3999 9053
3998 9051 3997 9051 3995 9053 3992 9054
3990 9055 3989 9057 3988 9058 3985 9058
3983 9057 3979 9060 3974 9062 3976 9092
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Gosselin2 follow-up statements
062
WGUS73 KLSX 250025
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
725 PM CDT Sun Oct 24 2021
ILC009-149-250215-
/O.CON.KLSX.FF.W.0044.000000T0000Z-211025T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brown IL-Pike IL-
725 PM CDT Sun Oct 24 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM CDT THIS
EVENING FOR SOUTHERN BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST
CENTRAL ILLINOIS...
At 725 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
La Grange, Versailles, Perry, Chambersburg, Coopertown and
Fishhook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3988 9092 4000 9060 3999 9061 3998 9061
3998 9059 3998 9057 3998 9052 3999 9053
3998 9051 3997 9051 3995 9053 3992 9054
3990 9055 3989 9057 3988 9058 3985 9058
3983 9057 3979 9060 3974 9062 3976 9092
FLASH FLOOD...RADAR INDICATED
$$
Gosselin633
WGUS73 KLSX 250213
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
913 PM CDT Sun Oct 24 2021
ILC009-149-250223-
/O.EXP.KLSX.FF.W.0044.000000T0000Z-211025T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brown IL-Pike IL-
913 PM CDT Sun Oct 24 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 915 PM CDT THIS EVENING FOR
SOUTHERN BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3988 9092 4000 9060 3999 9061 3998 9061
3998 9059 3998 9057 3998 9052 3999 9053
3998 9051 3997 9051 3995 9053 3992 9054
3990 9055 3989 9057 3988 9058 3985 9058
3983 9057 3979 9060 3974 9062 3976 9092
$$
GosselinThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 4:17 AM CDT | Areal Flood Advisory | LSX | Adams, Brown | 6 hr |
| Oct 24, 4:58 AM CDT | Flash Flood Warning | LSX | Adams | 2 hr |
| Oct 24, 4:03 PM CDT | Flash Flood Warning | LSX | Adams, Brown | 4 hr |
| Oct 24, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 41 min |
| Oct 24, 5:17 PM CDT | Tornado Warning | LSX | Calhoun, Greene, Pike | 43 min |
Nearby
Flash Flood Warnings in Illinois, 2021Every flash flood warning in 2021
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.