Alert archive / Illinois / Flash Flood Warnings in 2026
Flash Flood Warning 60, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Aug 14, 2026, 5:47 AM CDT for DeWitt County, Piatt County, Illinois. It was in force for 3 hr. 7 reports 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 14, 2026, 5:47 AM CDT (10:47 UTC)
- Expired
- Aug 14, 2026, 9:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties DeWitt County, IL, Piatt County, IL
The radar
The Lincoln radar (KILX), 45 km from the middle of the area, began a volume at 10:50 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 |
|---|---|---|---|
| Aug 14, 7:00 AM CDT | RAIN 2.2 | 3 Wsw Farmer City, IL | Cocorahs station IL-DW-8 Farmer City 2.7 WSW. The period of the Rain event was 24 hours. |
| Aug 14, 7:00 AM CDT | RAIN 3.28 | 3 Ne De Land, IL | Cocorahs station IL-PT-27 , IL. |
| Aug 14, 7:00 AM CDT | RAIN 3.31 | 2 Ssw Farmer City, IL | Cocorahs station IL-DW-5 Farmer City 1.5 SSW. The period of the Rain event was 24 hours. |
| Aug 14, 7:15 AM CDT | RAIN 2.17 | Lane, IL | Mesonet station DW4369 Lane. The period of the Rain event was 24 hours. |
| Aug 14, 7:15 AM CDT | RAIN 3.51 | 5 Ene Waynesville, IL | Mesonet station DW9761 Waynesville. The period of the Rain event was 24 hours. |
| Aug 14, 8:00 AM CDT | RAIN 3.03 | 3 S De Land, IL | Cocorahs station IL-PT-25 2 S De Land. |
| Aug 14, 8:00 AM CDT | RAIN 4.05 | 4 Nw Seymour, IL | Cocorahs station IL-PT-8 White Heath 3.7 NNE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 10.8 hours before the alert went out and 18 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
- 514 J/kg
- Mixed-layer CIN
- -241 J/kg
- Mixed-layer LCL
- 1327 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 440 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
302
WGUS53 KILX 141047
FFWILX
ILC039-147-141400-
/O.NEW.KILX.FF.W.0060.260814T1047Z-260814T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
547 AM CDT Fri Aug 14 2026
The National Weather Service in Lincoln has issued a
* Flash Flood Warning for...
De Witt County in central Illinois...
Northern Piatt County in central Illinois...
* Until 900 AM CDT.
* At 546 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. 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...
Clinton, Farmer City, Mansfield, Wapella, De Land, Waynesville,
Weldon, Kenney, White Heath, De Witt, Clinton Power Station, Lane,
Weldon Springs State Park, Galesville, Lodge, Hallsville and
Midland City.
This includes the following State Parks...
Clinton Lake State Recreation Area and Weldon Springs State Park.
This includes the following highways...
Interstate 72 between mile markers 167 and 173.
Interstate 74 between mile markers 156 and 168.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4028 8915 4028 8858 4028 8846 4005 8847
4005 8875 4006 8876 4006 8880 4005 8885
4005 8914
FLASH FLOOD...RADAR INDICATED
$$
251 follow-up statement
001
WGUS73 KILX 141359
FFSILX
Flash Flood Statement
National Weather Service Lincoln IL
859 AM CDT Fri Aug 14 2026
ILC039-147-141409-
/O.EXP.KILX.FF.W.0060.000000T0000Z-260814T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
De Witt IL-Piatt IL-
859 AM CDT Fri Aug 14 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING FOR DE
WITT AND NORTHERN PIATT COUNTIES...
Flood waters are gradually receding. Flooding is no longer expected
to pose a threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 1000 AM CDT for portions of
central, east central, and west central Illinois.
&&
LAT...LON 4028 8915 4028 8858 4028 8846 4005 8847
4005 8875 4006 8876 4006 8880 4005 8885
4005 8914
$$
AATWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lincoln, IL wrote its last area forecast discussion before this flash flood warning went out at Aug 14, 1:53 AM CDT, 3 hours 54 minutes earlier. Its key messages:
- Flash flooding is a concern along and north of the I-74 corridor ongoing. Some locations have received 2-4 inches so far.
- There is an area of convection moving south across central and southeastern IL this morning that poses a heavy rain and damaging wind threat. The next round of convection will move in late this evening into the overnight hours. A slight risk for severe weather is in place for the northwestern part of our CWA from the SPC.
- Heat index values of 105 to 110 degrees will continue into the weekend each afternoon, in areas near and south of I-72. The heat is expected to spread northward across the forecast area by Saturday.
Area forecast discussion, Aug 14, 1:53 AM CDT, 3 hours 54 minutes before
Area Forecast Discussion National Weather Service Lincoln IL 153 AM CDT Fri Aug 14 2026 .KEY MESSAGES... - Flash flooding is a concern along and north of the I-74 corridor ongoing. Some locations have received 2-4 inches so far. - There is an area of convection moving south across central and southeastern IL this morning that poses a heavy rain and damaging wind threat. The next round of convection will move in late this evening into the overnight hours. A slight risk for severe weather is in place for the northwestern part of our CWA from the SPC. - Heat index values of 105 to 110 degrees will continue into the weekend each afternoon, in areas near and south of I-72. The heat is expected to spread northward across the forecast area by Saturday. && .DISCUSSION... Issued at 152 AM CDT Fri Aug 14 2026 The next round of heavy rain and strong storms have entered the northern part of the CWA. It will continue to sink southward throughout the overnight hours into the morning. The environment is still quite unstable and as these storms push south, they should move into an area of stronger CAPE values. Effective wind shear is around 45 knots as of the most recent mesoanalysis from SPC where the storms are located. Damaging winds is the main concern with the strongest storms, but some small hail is possible as well. The next round of convection will move in late this evening into the overnight hours. A slight risk for severe weather is in place for the northwestern part of our CWA from the SPC. Along with the severe risk, we are also concerned for some flooding. There is a flood watch out until 15z this morning. PWATs are around 2-2.2 inches. We have been quite saturated as of late. Some areas cannot take much more without becoming inundated. Along and north of I-74, the FFG is much lower (6 hr: 2-2.5 inches, 3 hr: 1-2.5 inches) than in the southern half of the CWA, since they have received much of the rain in the last day or so. The area around I-74 to Danville has gotten ~2-5 inches of rain in the last 24 hours based off of MRMS estimates. WPC has put our northwestern counties in a moderate risk ERO today. Temperatures remain hot as we make our way into the weekend. There is a heat advisory for Scott County to Clark County (and south) that is valid through Sunday. Further expansion north of the advisory is possible as we go forward in time and get a better grasp of how the next few rounds of MCS activity will evolve, both spatially and temporally. Heat indices of 100-110 degrees are forecast through Sunday, but how far north these heat indices get will depend solely on the convection. There is a marginal risk for severe weather again tomorrow area-wide and again on Sunday for areas south of a Schuyler to McLean County line with a similar environment in place as previous days. The forecast will continue to evolve as we get newer runs of the models. Next week may bring us a break in the active weather and the heat briefly. Some guidance suggests a high pressure area setting up over the Upper Mississippi Valley / Great Lakes region by Monday, behind a cold front that is set to move through central IL during the day. Temperatures starting Monday into much of the next week will be mainly in the upper 70s to 80s for highs and 60s to low 70s for lows. && .AVIATION /06Z TAFS THROUGH 06Z SATURDAY/... Issued at 100 AM CDT Fri Aug 14 2026 IFR ceilings are in place at KPIA-KBMI and are expected to remain through mid-late morning, then MVFR through much of the afternoon. The low ceilings are not forecast to make much progress south, with MVFR likely at KCMI later tonight into Friday afternoon, and a period of MVFR ceilings possible at KSPI-KDEC Friday morning. Periods of TSRA with locally heavy rain and gusty winds will affect the terminals into Friday morning, with bouts if IFR-LIFR under the more intense storms. TSRA should diminish later morning into afternoon. && .ILX WATCHES/WARNINGS/ADVISORIES... Flood Watch until 10 AM CDT this morning for ILZ027>031-037- 038-045-046. Heat Advisory until 8 PM CDT Sunday for ILZ049>052-061>063- 066>068-071>073. && KEY MESSAGES...Copple DISCUSSION...Copple AVIATION...25
Hazardous weather outlook, Aug 14, 5:41 AM CDT, 6 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 541 AM CDT Fri Aug 14 2026 ILZ027>031-036>038-040>057-061>063-066>068-071>073-151045- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler- Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott- Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby- Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence- 541 AM CDT Fri Aug 14 2026 This Hazardous Weather Outlook is for central Illinois, east central Illinois, southeast Illinois and west central Illinois. .DAY ONE...Today and tonight. Heat indices of 100 to 110 are expected this afternoon south of I-72. Additional thunderstorms are expected this morning, and again tonight. Locally strong to severe storms and flash flooding are possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hot and humid conditions will persist over the area this weekend. Peak afternoon heat indices will range from 100 to 110 primarily from I-72 southward. Daily chances for thunderstorms exist through the weekend. Some of these storms could be severe and produce heavy rain through at least Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight. 25
In the hours before
Local storm report, Aug 14, 4:02 AM CDT, 1 hour 45 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
402 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 AM Rain 2 N Homer 40.06N 87.96W
08/14/2026 M1.23 Inch Champaign IL Cocorahs
1.23 rain in the past 60 minutes.
&&
RACLocal storm report, Aug 14, 4:14 AM CDT, 1 hour 33 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
414 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0349 AM Rain 4 W Vermilion Regional 40.19N 87.67W
08/14/2026 M4.81 Inch Vermilion IL Cocorahs
4.81 inches of rainfall in the last 5 hours.
&&
RACLocal storm report, Aug 14, 4:16 AM CDT, 1 hour 31 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
416 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 AM Rain 3 E Danville 40.14N 87.57W
08/14/2026 M3.60 Inch Vermilion IL Cocorahs
3.6 inches of rainfall in last 3 hours.
&&
RACLocal storm report, Aug 14, 4:18 AM CDT, 1 hour 29 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
418 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0415 AM Flash Flood 1 SSW Vermilion Regiona 40.19N 87.60W
08/14/2026 Vermilion IL Emergency Mngr
Intersection of Poland Rd & Bowman Ave near
airport is under water from Stoney Creek.
Road is closed.
&&
RACLocal storm report, Aug 14, 5:15 AM CDT, 32 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Lincoln IL
515 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1133 PM Hail 1 NE Alta 40.83N 89.62W
08/13/2026 E1.00 Inch Peoria IL Public
Report from mPING: Quarter (1.00 in.).
1208 AM Tstm Wnd Gst Rankin 40.46N 87.90W
08/14/2026 E60 MPH Vermilion IL Trained Spotter
1234 AM Rain Hoopeston 40.47N 87.67W
08/14/2026 M1.75 Inch Vermilion IL Trained Spotter
1.75 inch rainfall in 28 minutes.
1238 AM Tstm Wnd Dmg Peoria 40.72N 89.59W
08/14/2026 Peoria IL Broadcast Media
Tree damage in the west bluff of Peoria.
1254 AM Rain 1 NNE Peoria Intl Airpo 40.67N 89.68W
08/14/2026 M1.18 Inch Peoria IL ASOS
ASOS station KPIA Peoria Intl Arpt.
1257 AM Tstm Wnd Dmg Danville 40.14N 87.63W
08/14/2026 Vermilion IL Public
Power line down report from public relayed
by broadcast media.
1259 AM Tstm Wnd Dmg 1 E Danville 40.14N 87.61W
08/14/2026 Vermilion IL Law Enforcement
Roof off of business blown off and in
roadway. Time estimated by radar.
0137 AM Rain 1 S Danville 40.13N 87.63W
08/14/2026 M1.70 Inch Vermilion IL Emergency Mngr
Reports 1.70 inches of rainfall in 35
minutes in Danville.
0200 AM Flash Flood 5 SSE Bloomington 40.41N 88.96W
08/14/2026 McLean IL Public
Little Kickapoo Creek out of its banks.
Relayed by WMBD-TV.
0249 AM Rain 1 S Danville 40.13N 87.63W
08/14/2026 M4.00 Inch Vermilion IL Emergency Mngr
4.00 inches measured rainfall in 1hr 45 min
in Danville, with additional rain falling at
time of report.
0252 AM Tstm Wnd Dmg 2 E Urbana 40.11N 88.16W
08/14/2026 Champaign IL Broadcast Media
6 inch tree branch down on Washington
Street. Time estimated via radar.
0304 AM Flash Flood Urbana 40.11N 88.21W
08/14/2026 Champaign IL Broadcast Media
Vine St Viaduct impassible from water.
0317 AM Flash Flood 2 SE Champaign 40.10N 88.24W
08/14/2026 Champaign IL Broadcast Media
South Neil Street and W Kirby St viaduct
impassable due to high waters.
0322 AM Flash Flood 1 N Danville 40.16N 87.63W
08/14/2026 Vermilion IL Law Enforcement
Road impassable due to flood waters.
0328 AM Flash Flood 2 NNE Danville 40.16N 87.62W
08/14/2026 Vermilion IL Emergency Mngr
Cars under water and water entering houses
Blue Ridge and Westview area in Danville
with water rescues ongoing.
0349 AM Rain 4 W Vermilion Regional 40.19N 87.67W
08/14/2026 M4.81 Inch Vermilion IL Cocorahs
4.81 inches of rainfall in the last 5 hours.
0356 AM Rain 2 N Homer 40.06N 87.96W
08/14/2026 M1.23 Inch Champaign IL Cocorahs
1.23 rain in the past 60 minutes.
0400 AM Rain 3 E Danville 40.14N 87.57W
08/14/2026 M3.60 Inch Vermilion IL Cocorahs
3.6 inches of rainfall in last 3 hours.
0400 AM Rain 3 E Danville 40.14N 87.57W
08/14/2026 M3.60 Inch Vermilion IL Cocorahs
3.6 inches of rainfall in last 3 hours.
0415 AM Flash Flood 1 SSW Vermilion Regiona 40.19N 87.60W
08/14/2026 Vermilion IL Emergency Mngr
Intersection of Poland Rd & Bowman Ave near
airport is under water from Stoney Creek.
Road is closed.
0415 AM Flash Flood 1 SSW Vermilion Regiona 40.19N 87.60W
08/14/2026 Vermilion IL Emergency Mngr
Intersection of Poland Rd & Bowman Ave near
airport is under water from Stoney Creek.
Road is closed.
&&Local storm report, Aug 14, 5:20 AM CDT, 27 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
520 AM CDT Fri Aug 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0518 AM Lightning 9 S Charleston 39.35N 88.18W
08/14/2026 Cumberland IL Emergency Mngr
Residence struck by lightning.
&&The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 11:11 PM CDT | Special Weather Statement | ILX | Peoria | 34 min |
| Aug 13, 11:21 PM CDT | Flash Flood Warning | ILX | Knox, Marshall, Peoria, Stark, Woodford | 4 hr |
| Aug 13, 11:32 PM CDT | Special Weather Statement | ILX | Woodford | 43 min |
| Aug 13, 11:56 PM CDT | Special Weather Statement | ILX | Peoria | 34 min |
| Aug 14, 12:05 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 55 min |
| Aug 14, 12:18 AM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell, Woodford | 57 min |
| Aug 14, 12:40 AM CDT | Flash Flood Warning | ILX | Vermilion | 12 hr |
| Aug 14, 1:07 AM CDT | Special Weather Statement | ILX | Vermilion | 23 min |
| Aug 14, 1:12 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 52 min |
| Aug 14, 1:38 AM CDT | Flash Flood Warning | ILX | Champaign, McLean | 7 hr |
| Aug 14, 2:33 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt, Vermilion | 46 min |
| Aug 14, 2:59 AM CDT | Flash Flood Warning | ILX | Champaign, Vermilion | 6 hr |
| Aug 14, 4:07 AM CDT | Flash Flood Warning | ILX | Fulton, Knox, Peoria, Tazewell | 6 hr |
| Aug 14, 6:47 AM CDT | Flash Flood Warning | ILX | Coles, Douglas, Edgar | 11 hr |
| Aug 14, 8:14 AM CDT | Flash Flood Warning | ILX | Clark, Coles, Cumberland, Edgar | 3 hr |
| Aug 14, 9:25 AM CDT | River Flood Warning | ILX | Vermilion | 4 days |
| Aug 14, 10:00 AM CDT | Flash Flood Warning | ILX | Cass, Fulton, Logan, Mason, Menard, Sangamon | 4 hr |
| Aug 14, 10:20 AM CDT | River Flood Warning | ILX | Fulton, Knox | 4 days |
| Aug 14, 10:32 AM CDT | Areal Flood Advisory | ILX | Macon | 3 hr |
| Aug 14, 12:15 PM CDT | Flood Watch | ILX | Champaign, DeWitt, Douglas, Edgar, Fulton, Knox and 10 more | 22 hr |
| Aug 14, 3:09 PM CDT | River Flood Warning | ILX | Fulton | 5 days |
Nearby
Flash Flood Warnings in Illinois, 2026Every flash flood warning in 2026
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.