Alert archive / Illinois / Flash Flood Warnings in 2021
Flash Flood Warning 35, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Oct 24, 2021, 6:37 PM CDT for Cass County, Morgan County, Scott County, Illinois. It was in force for 3 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
- Oct 24, 2021, 6:37 PM CDT (23:37 UTC)
- Expired
- Oct 24, 2021, 9:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cass County, IL, Morgan County, IL, Scott County, IL
The radar
The Lincoln radar (KILX), 85 km from the middle of the area, began a volume at 23:36 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 24, 6:54 PM CDT | FLOOD | 3 Wnw Virginia, IL | WATER OVER ROADWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 193 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.
559
WGUS53 KILX 242337
FFWILX
ILC017-137-171-250245-
/O.NEW.KILX.FF.W.0035.211024T2337Z-211025T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
637 PM CDT Sun Oct 24 2021
The National Weather Service in Lincoln has issued a
* Flash Flood Warning for...
Cass County in west central Illinois...
Northern Morgan County in west central Illinois...
Northwestern Scott County in west central Illinois...
* Until 945 PM CDT.
* At 635 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 2 inches of rain have
fallen. The expected rainfall rate is 2 inches in 1 hour. 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...
Virginia, Ashland, Bluffs, Chandlerville, Chapin, Arenzville,
Exeter, Literberry, Philadelphia, Concord, Newmansville,
Jacksonville Municipal Airport, Sinclair and Prentice.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3985 9051 4003 9027 4009 9001 3992 9000
3981 9000 3971 9060
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2 INCHES IN 1 HOUR
$$
371 follow-up statement
588
WGUS73 KILX 250242
FFSILX
Flash Flood Statement
National Weather Service Lincoln IL
942 PM CDT Sun Oct 24 2021
ILC017-137-171-250252-
/O.EXP.KILX.FF.W.0035.000000T0000Z-211025T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cass IL-Morgan IL-Scott IL-
942 PM CDT Sun Oct 24 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 945 PM CDT THIS EVENING FOR
CASS, NORTHERN MORGAN AND NORTHWESTERN SCOTT COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
A Flash Flood Watch remains in effect until 700 AM CDT Monday for
portions of central Illinois, east central Illinois and west central
Illinois.
LAT...LON 3985 9051 4003 9027 4009 9001 3992 9000
3981 9000 3971 9060
$$
37The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 5:03 AM CDT | Flash Flood Warning | ILX | Morgan, Scott | 3 hr |
| Oct 24, 6:15 AM CDT | Flood Watch | ILX | Macon, Morgan, Sangamon, Scott | 20 hr |
| Oct 24, 10:08 AM CDT | River Flood Warning | ILX | Piatt | 8 days |
| Oct 24, 3:35 PM CDT | Special Weather Statement | ILX | Fulton | 25 min |
| Oct 24, 4:00 PM CDT | Special Weather Statement | ILX | Peoria | 30 min |
| Oct 24, 5:00 PM CDT | Flash Flood Warning | ILX | Fulton, Schuyler | 3 hr |
| Oct 24, 5:39 PM CDT | Special Weather Statement | ILX | McLean | 51 min |
| Oct 24, 5:39 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Morgan, Sangamon, Schuyler, Scott | 51 min |
| Oct 24, 5:56 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard, Morgan, Sangamon, Scott | 49 min |
| Oct 24, 6:06 PM CDT | Tornado Warning | ILX | Cass, Morgan, Scott | 24 min |
| Oct 24, 6:26 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean, Vermilion | 34 min |
| Oct 24, 6:28 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard, Morgan, Sangamon, Tazewell | 62 min |
| Oct 24, 6:38 PM CDT | Tornado Warning | ILX | Menard, Sangamon | 26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.