A slow-moving, isolated thunderstorm produced locally heavy rainfall of 3 to 5 inches in Champaign County, which resulted in several roads becoming impassable in the city of Champaign.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ILX wrote it up.
A slow-moving, isolated thunderstorm produced locally heavy rainfall of 3 to 5 inches in Champaign County, which resulted in several roads becoming impassable in the city of Champaign.
The local office's own words before the first event, 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 the first event at Jun 16, 1:38 PM CST, 7 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Lincoln IL 238 PM CDT Mon Jun 16 2025 .KEY MESSAGES... - Thunderstorm chances will increase Tuesday afternoon through Wednesday...with the highest probability for severe weather focusing Wednesday afternoon and evening. - There is a strong signal for hotter weather by next weekend. High temperatures are progged to rise into the lower to middle 90s both Saturday and Sunday, resulting in peak heat index readings above 100 degrees. && .DISCUSSION... Issued at 238 PM CDT Mon Jun 16 2025 ...A Few Storms This Evening/Possible Fog Overnight... A slow-moving short-wave trough evident on 1830z/130pm water vapor imagery over southern Missouri will edge eastward into southern Illinois tonight. Meanwhile additional short-wave energy over Iowa will weaken as it drops southeastward toward central Illinois. The stronger southern wave has been producing widespread showers along/south of I-70 since this morning...and these showers will continue through the balance of the afternoon. Further north of the main rain area, widely scattered convection has formed just north of Decatur and Champaign. Think additional cells will fire further north and west as the afternoon progresses...given moderate instability and weak forcing from both upper features. Have focused highest PoPs (80-100%) along/south of I-70...with only 20-30 PoPs further north across the rest of the area into early evening. Most of the showers will dissipate after sunset: however, scattered showers may linger and/or re-develop east of the I-57 corridor through the entire night. The other short-term forecast concern will be potential fog development tonight. Fog has formed the past several nights and tonight looks to be no exception. With the low clouds clearing, winds remaining nearly calm, and surface dewpoints hovering in the upper 60s and lower 70s, at least patchy fog will form across the entire area. CAMs are in good agreement that the lowest visbys will focus along/southwest of a Peoria to Champaign line. Confidence is not high enough to issue a Dense Fog Advisory at this time, but will highlight locations south of I-74 with areas of fog. ...Scattered Convection Tuesday Afternoon/Evening... A cold front currently extending from northern Minnesota to Nebraska will sag southeastward over the next 24 hours...reaching a southern Lake Michigan to southern Iowa line by Tuesday evening. Scattered thunderstorms will develop along this boundary, and may be aided by an MCV rolling eastward out of the Plains. A moderately unstable environment with SBCAPEs in excess of 3000J/kg will be present ahead of the front. While deep-layer shear will initially be virtually non-existent, a slight uptick to 20-30kt is progged to occur as the MCV arrives. This added shear will be enough to energize the storms, resulting in the potential for scattered wind damage and hail along/north of a Macomb to Minonk line between 3pm and 9pm. ...Potential MCS Tuesday night... As has been seen by the past several model runs, the weather will become more active by Tuesday night as MCS activity forms over the Plains, then spills eastward toward central Illinois overnight into Wednesday morning. 12z models generally have a good handle on the situation...focusing convection across southern Nebraska/northern Kansas late Tuesday afternoon. The nocturnal low-level jet is progged to strengthen considerably...with the NAM depicting a 50-60kt 850mb jet from Texas to northwest Missouri by 06z Wed. This will support an ongoing cluster of convection that will subsequently track E/SE into western Illinois late Tuesday night into Wednesday morning. Storms will likely be in a weakening mode as they arrive, but may still pose a gusty wind/heavy rainfall risk mainly along/west of the Illinois River. ...Convective Re-Development Wednesday Afternoon/Evening... As is typically the case this time of year, the exact track of the overnight MCS will determine the evolution of convection later Wednesday. With limited high-resolution guidance at that time frame, it is still too early to pin down specific details. Based on the synoptic pattern and the likely position of the morning storms, it seems reasonable to surmise the most likely location for storm re-development Wednesday afternoon and evening will be along/east of I-55. Given feed of rich Gulf moisture ahead of an approaching front, surface dewpoints in the lower to perhaps middle 70s will support SBCAPEs in excess of 3000J/kg where at least partial sunshine returns after the morning rain/clouds. In addition, NAM suggests 0-6km shear values increasing to 30-40kt in the warm sector. These parameters will likely support a broken line of strong to severe convection with an attendant strong wind/hail/tornado risk. ...Hot Weather by the End of the Week... Once the Wednesday system departs, a period of slightly cooler and drier conditions will be on tap for Thursday before upper heights rise and temperatures increase markedly. 12z NBM shows a high probability (60-80% chance) of exceeding 90 degrees across much of central Illinois next Saturday and Sunday. These temperatures combined with seasonally high dewpoints in lower 70s will produce heat index values of 100 degrees or above. Barnes && .AVIATION... (For the 18z TAFs through 18z Tuesday Afternoon) Issued at 111 PM CDT Mon Jun 16 2025 SCT-BKN diurnal Cu has once again blossomed across central Illinois early this afternoon. Cloud bases were initially MVFR, but will slowly rise to low VFR over the next 1-2 hours before the Cu dissipates toward sunset. With partial clearing, light/variable winds, and ample boundary layer moisture as evidenced by surface dewpoints in the upper 60s and lower 70s, the stage will be set for fog development late tonight. CAMs are generally in good agreement...with the HRRR/RAP/GFSLAMP all focusing the most widespread low visbys along/southwest of a KAAA to KMTO line. Have lowered visbys into 3-6 mile range at all sites after 09z/10z accordingly. As the fog dissipates, an MVFR ceiling will persist for a few hours Tuesday morning before scattering from west to east across the area by 16z. Barnes && .ILX WATCHES/WARNINGS/ADVISORIES... None. &&
Hazardous Weather Outlook National Weather Service Lincoln IL 502 AM CDT Mon Jun 16 2025 ILZ027>031-036>038-040>043-047>053-171100- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler- Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-Christian- Macon- 502 AM CDT Mon Jun 16 2025 This Hazardous Weather Outlook is for central Illinois and west central Illinois. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There will be a chance for severe thunderstorms Tuesday evening through late Tuesday night, as well as Wednesday afternoon and evening. The primary threats will be locally damaging wind gusts and large hail, but a tornado or two cannot be ruled out for Wednesday. Increased heat and humidity can be expected on Tuesday as well as over the weekend, as heat index values rise to near 95 degrees Tuesday and near 100 over the weekend. This may cause heat related illness for those without effective cooling, especially for sensitive individuals. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. ILZ044>046-054>057-061>063-171100- Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby- Cumberland-Clark- 502 AM CDT Mon Jun 16 2025 This Hazardous Weather Outlook is for central Illinois and east central Illinois. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There will be a chance for severe thunderstorms Wednesday afternoon and evening. The primary threats will be locally damaging wind gusts and large hail, although a tornado or two will be possible as well. Increased heat and humidity can be expected on Tuesday as well as over the weekend, as heat index values rise to near 95 degrees Tuesday and near 100 over the weekend. This may cause heat related illness for those without effective cooling, especially for sensitive individuals. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. ILZ066>068-071>073-171100- Effingham-Jasper-Crawford-Clay-Richland-Lawrence- 502 AM CDT Mon Jun 16 2025 This Hazardous Weather Outlook is for southeast Illinois. .DAY ONE...Today and tonight. Locally heavy rain is possible with slow moving thunderstorms through afternoon today. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There will be a chance for severe thunderstorms Wednesday afternoon and evening. The primary threats will be locally damaging wind gusts and large hail, although a tornado or two will be possible as well. Increased heat and humidity can be expected on Tuesday as well as over the weekend, as heat index values rise to near 95 degrees Tuesday and near 100 over the weekend. This may cause heat related illness for those without effective cooling, especially for sensitive individuals. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. 37
The Lincoln radar (KILX), 89 km away, was scanning. The volume nearest the first event began at 19:43 UTC.
1 flash flood. Local standard time, as filed.
Locally heavy rainfall of 3 to 4.5 inches resulted in several roads becoming flooded and impassable on the west side of Champaign. Flooded roads included Interstate Drive, Mattis Avenue, Country Fair Drive, and neighborhoods near I-57/I-72 interchange.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2025Every state in 2025This day in weather historyWarnings in Illinois, June 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1261192.