Alert archive / Illinois / Flash Flood Warnings in 2021
Flash Flood Warning 26, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Aug 12, 2021, 10:04 AM CDT for Champaign County, McLean County, Illinois. It was in force for 5 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
- Aug 12, 2021, 10:04 AM CDT (15:04 UTC)
- Expired
- Aug 12, 2021, 3:00 PM CDT
- In force
- 5 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Champaign County, IL, McLean County, IL
The radar
The Lincoln radar (KILX), 89 km from the middle of the area, began a volume at 15:06 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 12:00Z, 3.1 hours before the alert went out and 36 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
- 1191 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1149 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted.
446
WGUS53 KILX 121504
FFWILX
ILC019-113-121800-
/O.NEW.KILX.FF.W.0026.210812T1504Z-210812T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
1004 AM CDT Thu Aug 12 2021
The National Weather Service in Lincoln has issued a
* Flash Flood Warning for...
Southeastern McLean County in central Illinois...
Northwestern Champaign County in east central Illinois...
* Until 100 PM CDT.
* At 1004 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall of 1 to 2 inches is possible.
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...
Saybrook, Ludlow, Bellflower and Foosland.
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 4034 8846 4033 8859 4050 8860 4050 8846
4049 8846 4047 8846 4040 8846 4040 8845
4040 8842 4040 8840 4040 8838 4040 8833
4040 8823 4040 8821 4040 8814 4040 8812
4040 8808 4040 8805 4036 8806
FLASH FLOOD...RADAR INDICATED
$$
Shimon3 follow-up statements
742
WGUS73 KILX 121556
FFSILX
Flash Flood Statement
National Weather Service Lincoln IL
1056 AM CDT Thu Aug 12 2021
ILC019-113-121800-
/O.CON.KILX.FF.W.0026.000000T0000Z-210812T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Champaign IL-McLean IL-
1056 AM CDT Thu Aug 12 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN MCLEAN AND NORTHWESTERN CHAMPAIGN
COUNTIES...
At 1056 AM CDT, trained weather spotters reported thunderstorms
producing heavy rain east of Saybrook, where several county roads
are covered with water and are impassible. Between 2 and 4 inches of
rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Trained spotters reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Saybrook, Ludlow, Bellflower and Foosland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4034 8846 4033 8859 4050 8860 4050 8846
4049 8846 4047 8846 4040 8846 4040 8845
4040 8842 4040 8840 4040 8838 4040 8833
4040 8823 4040 8821 4040 8814 4040 8812
4040 8808 4040 8805 4036 8806
FLASH FLOOD...OBSERVED
$$
Shimon510
WGUS53 KILX 121753
FFWILX
ILC019-113-122000-
/O.EXT.KILX.FF.W.0026.000000T0000Z-210812T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
1253 PM CDT Thu Aug 12 2021
The National Weather Service in Lincoln has extended the
* Flash Flood Warning for...
Southeastern McLean County in central Illinois...
Northwestern Champaign County in east central Illinois...
* Until 300 PM CDT.
* At 1253 PM CDT, trained weather spotters reported thunderstorms
producing heavy rain in Several county roads east of Saybrook have
water across them and are impassible. Between 3 and 5 inches of
rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Trained spotters reported.
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...
Saybrook, Ludlow, Bellflower and Foosland.
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 4034 8846 4033 8859 4050 8860 4050 8846
4049 8846 4047 8846 4040 8846 4040 8845
4040 8842 4040 8840 4040 8838 4040 8833
4040 8823 4040 8821 4040 8814 4040 8812
4040 8808 4040 8805 4036 8806
FLASH FLOOD...OBSERVED
$$
Shimon372
WGUS73 KILX 122001
FFSILX
Flash Flood Statement
National Weather Service Lincoln IL
301 PM CDT Thu Aug 12 2021
ILC019-113-122011-
/O.EXP.KILX.FF.W.0026.000000T0000Z-210812T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Champaign IL-McLean IL-
301 PM CDT Thu Aug 12 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHEASTERN MCLEAN AND
NORTHWESTERN CHAMPAIGN COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 4034 8846 4033 8859 4050 8860 4050 8846
4049 8846 4047 8846 4040 8846 4040 8845
4040 8842 4040 8840 4040 8838 4040 8833
4040 8823 4040 8821 4040 8814 4040 8812
4040 8808 4040 8805 4036 8806
$$
ShimonThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 2:45 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 15 hr |
| Aug 12, 2:59 AM CDT | Special Weather Statement | ILX | McLean | 46 min |
| Aug 12, 3:14 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 31 min |
| Aug 12, 3:51 AM CDT | Special Weather Statement | ILX | McLean | 24 min |
| Aug 12, 4:02 AM CDT | Special Weather Statement | ILX | Tazewell | 43 min |
| Aug 12, 4:26 AM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 21 min |
| Aug 12, 8:12 AM CDT | Special Weather Statement | ILX | McLean | 48 min |
| Aug 12, 9:13 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean | 47 min |
| Aug 12, 9:24 AM CDT | Areal Flood Advisory | ILX | DeWitt, McLean, Piatt | 3 hr |
| Aug 12, 10:52 AM CDT | Severe Thunderstorm Warning | ILX | Champaign | 38 min |
| Aug 12, 11:17 AM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 3 hr |
| Aug 12, 11:26 AM CDT | Special Weather Statement | ILX | Fulton, Tazewell | 49 min |
| Aug 12, 12:16 PM CDT | Special Weather Statement | ILX | Logan | 44 min |
| Aug 12, 1:05 PM CDT | Special Weather Statement | ILX | Vermilion | 40 min |
| Aug 12, 1:45 PM CDT | Special Weather Statement | ILX | Champaign, Piatt | 45 min |
| Aug 12, 2:16 PM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 119 min |
| Aug 12, 2:23 PM CDT | Special Weather Statement | ILX | Champaign | 52 min |
| Aug 12, 2:35 PM CDT | Special Weather Statement | ILX | Christian, Morgan, Sangamon | 25 min |
| Aug 12, 2:43 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon | 47 min |
| Aug 12, 2:53 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 37 min |
| Aug 12, 3:01 PM CDT | Areal Flood Warning | ILX | Champaign, McLean | 6 hr |
| Aug 12, 3:08 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Moultrie, Shelby | 52 min |
| Aug 12, 3:43 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Effingham, Moultrie, Shelby | 47 min |
| Aug 12, 4:15 PM CDT | Flash Flood Warning | ILX | Douglas, Moultrie, Shelby | 3 hr |
| Aug 12, 4:29 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Cumberland, Effingham, Jasper, Shelby | 46 min |
| Aug 12, 5:09 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Jasper | 36 min |
| Aug 12, 5:28 PM CDT | Special Weather Statement | ILX | Scott | 32 min |
| Aug 12, 5:30 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Scott | 18 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.