Scattered strong to severe thunderstorms developed along an old outflow boundary along the I-72 corridor during the late afternoon and evening of June 25th. Five brief tornadoes touched down, resulting in minor tree and crop damage.
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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.
Scattered strong to severe thunderstorms developed along an old outflow boundary along the I-72 corridor during the late afternoon and evening of June 25th. Five brief tornadoes touched down, resulting in minor tree and crop damage.
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 25, 2:43 PM CST, 1 hour 44 minutes earlier.
Area Forecast Discussion National Weather Service Lincoln IL 343 PM CDT Fri Jun 25 2021 .SYNOPSIS... Issued at 343 PM CDT Fri Jun 25 2021 Several rounds of storms, some of which that could be strong to severe, will bring heavy rainfall to parts of central IL later this evening into overnight. Additional rainfall amounts of 1-2" may result in flash flooding especially in low-lying or flood prone areas. A Flash Flood Watch remains in effect for locations north of I-70 through Saturday morning. && .SHORT TERM...(This evening through Saturday) ISSUED AT 343 PM CDT Fri Jun 25 2021 Surface analysis this afternoon depicts a stationary front stretched from northern IL into IA well north of the area. An outflow boundary is positioned across southeast IL into central MO with convection ongoing in our far southeast IL counties as well as new activity firing over central MO as of 3 PM. Elsewhere, a break from the precipitation is occurring with some breaks in the clouds noted across west-central portions of the state. SPC mesoanalysis depicts MLCAPE starting to build northward with clearing, though we remain capped (50-150 J/kg) from about I-70 northward from earlier convection. This will prevent anything from developing in these areas for the next few hours. Confidence in the evolution of activity going into tonight remains low. Once the CAP erodes, scattered storms should develop across west-central IL along the ouflow boundary sometime later this afternoon or early evening, which the 25.18Z HRRR picks up on. However, CAMs have not been performing well. The idea is that coverage will increase by tonight as a few mid-level waves ripple through the southwest flow aloft and the LLJ kicks in. Strong to severe storms remain possible across locations south of I-74 with damaging winds and large hail being the main threats. However, decent low- level shear with a boundary in the area could support a brief tornado or two. Additional rainfall amounts through Saturday morning look to range from 1-2" north of I-70, with higher amounts possible where storms train. With 1 to 3 hr flash flood guidance ranging from 1.5 to 2.5" due to recent soaking rains. Because of this, a Flash Flood Watch remains in effect for counties north of I-70 through Saturday morning. && .LONG TERM...(Saturday night through Friday) ISSUED AT 343 PM CDT Fri Jun 25 2021 The upper-level pattern remains in a blocking regime this weekend and even into the new week, keeping periods of showers and storms possible. Shower and storm chances look to taper off Saturday morning as the LLJ recedes. Additional thunderstorm development looks likely along any remnant boundaries by the afternoon into evening hours of Saturday, pending how quickly the atmosphere destabilizes after overnight convection. A similar story going into Sunday with the same set up. All in all, additional rainfall amounts Saturday through Monday morning look to range from 1-3" north of I- 70. Shower and storm chances remain possible through a good portion of the week with the blocking pattern keeping southwest flow positioned over the local area. Let the NBM handle PoPs through the week for the time being. The pattern finally begins to change by the end of the week into next weekend as the ridging over the eastern CONUS/Atlantic breaks down. && .AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon) Issued at 1255 PM CDT Fri Jun 25 2021 A tricky forecast over the next 24 hours. Scattered showers and maybe storms will be possible this afternoon across locations mainly along/south of I-72. Activity has already begun developing across west-central IL, however the environment these are developing in is still pretty worked over from earlier convection. Because of this just threw in VCSH at southern 3 airfields. The better chance for showers and storms arrive later tonight as the LLJ kicks in. Brief reductions in visibility and MVFR ceilings will be possible with storms later tonight. As storms taper off early Saturday morning, MVFR ceilings look to hang around. Breezy south winds develop by mid to late morning with gusts of 20-25 kts possible. && .ILX WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch through Saturday morning for ILZ027>031- 036>038-040>057-061. && SYNOPSIS...NMB SHORT TERM...NMB LONG TERM...NMB AVIATION...NMB
Hazardous Weather Outlook National Weather Service Lincoln IL 307 PM CDT Fri Jun 25 2021 ILZ027>031-036>038-261100- Fulton-Knox-Marshall-McLean-Peoria-Stark-Tazewell-Woodford- 307 PM CDT Fri Jun 25 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING... This Hazardous Weather Outlook is for portions of central Illinois and west central Illinois. .DAY ONE...TONIGHT... Strong to severe storms are possible this evening. Damaging wind gusts, large hail, and flash flooding are the primary threats, though a brief tornado is possible. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... Another round of strong to severe thunderstorms is possible Saturday afternoon into Saturday night and again on Sunday. Damaging wind gusts, large hail, and flash flooding are the main threats. Heavy rainfall remains a concern through the upcoming weekend. The latest indications suggest rainfall totals of 2 to 5 inches north of I-70 through Sunday. This could lead to significant rises on area rivers, creeks, and streams as well as produce flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed later this afternoon and evening. ILZ040>057-061-261100- Cass-Champaign-Christian-Coles-De Witt-Douglas-Edgar-Logan-Macon- Mason-Menard-Morgan-Moultrie-Piatt-Sangamon-Schuyler-Scott-Shelby- Vermilion- 307 PM CDT Fri Jun 25 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING... This Hazardous Weather Outlook is for portions of central Illinois, east central Illinois and west central Illinois. .DAY ONE...TONIGHT... Severe storms are possible this evening through tonight. Damaging wind gusts, large hail, and flash flooding are the primary threats, though a brief tornado is also possible. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... Another round of strong to severe thunderstorms is possible Saturday afternoon into Saturday night and again on Sunday. Damaging wind gusts, large hail, and flash flooding are the main threats. Heavy rainfall remains a concern through the upcoming weekend. The latest indications suggest rainfall totals of 2 to 5 inches north of I-70 through Sunday. This could lead to significant rises on area rivers, creeks, and streams as well as produce flash flooding. Minor flooding is expected to develop along portions of the Spoon River between London Mills and Seville this weekend and along the Illinois River between Havana and Beardstown early next week. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed later this afternoon through tonight. ILZ062-063-066>068-071>073-261100- Clark-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-Richland- 307 PM CDT Fri Jun 25 2021 This Hazardous Weather Outlook is for portions of east central Illinois and southeast Illinois. .DAY ONE...TONIGHT... Strong to isolated severe storms are possible across southeast IL this evening. Primary threats will be gusty winds, large hail, and heavy rainfall. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... Another round of thunderstorms is possible Saturday afternoon into Saturday night and again on Sunday. The severe threat appears low at this time, but locally heavy rain is possible. Periods of showers and storms will occur going into this weekend with rainfall amounts up to 2 inches possible south of I-70 through Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed later this afternoon through tonight. Auten
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1143 AM CDT FRI JUN 25 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 AM HEAVY RAIN 2 SE AUBURN 39.57N 89.72W
06/25/2021 M2.91 INCH SANGAMON IL PUBLIC
&&
SBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1247 PM CDT FRI JUN 25 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0820 PM TSTM WND DMG LOWDER 39.55N 89.84W
06/24/2021 SANGAMON IL PUBLIC
DAMAGE TO TREES, A FLAG POLE, HOUSE SHINGLES
AND SIDING. HIGH WIND LASTED ABOUT 5
MINUTES. DELAYED REPORT.
&&
MILLERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1259 PM CDT FRI JUN 25 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1200 PM HEAVY RAIN 3 NE RUSHVILLE 40.15N 90.52W
06/25/2021 M1.34 INCH SCHUYLER IL MESONET
&&
SBSpecial Weather Statement
National Weather Service Lincoln IL
252 PM CDT Fri Jun 25 2021
ILZ072-073-252015-
Richland-Lawrence-
252 PM CDT Fri Jun 25 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LAWRENCE AND
SOUTHEASTERN RICHLAND COUNTIES UNTIL 315 PM CDT...
At 251 PM CDT, Doppler radar was tracking a strong thunderstorm over
Lancaster, or 8 miles northwest of Mount Carmel, moving east at 30
mph.
Winds in excess of 30 mph will be possible with this storm.
Locations impacted include...
St. Francisville and Mount Carmel Airport.
LAT...LON 3861 8791 3864 8762 3860 8762 3859 8761
3859 8764 3858 8764 3857 8765 3857 8791
TIME...MOT...LOC 1951Z 264DEG 25KT 3853 8784
AutenThe Lincoln radar (KILX), 87 km away, was scanning. The volume nearest the first event began at 22:28 UTC.
5 tornado. Local standard time, as filed.
A tornado touched down in an open field about 2.5 miles south-southeast of Fisher at 5:27 PM CDT. The tornado quickly dissipated by 5:28 PM CDT. No damage was reported.
A tornado touched down in an open field about 3.7 miles northeast of Argenta at 6:01 PM CDT. The tornado quickly dissipated by 6:02 PM CDT. No damage was reported.
A tornado touched down in an open field about 2.4 miles north-northwest of Cisco at 6:08 PM CDT. The tornado quickly dissipated by 6:10 PM CDT. Minor crop damage was reported.
A tornado touched down in an open field about 4.8 miles north-northeast of Cisco at 6:20 PM CDT. The tornado quickly dissipated by 6:22 PM CDT. No damage was reported.
A tornado touched down about 3.3 miles west of Downs at 8:26 PM CDT. The tornado damaged trees and a section of a corn field along North 1750 East Road just south of East 850 North Road before quickly dissipating by 8:27 PM CDT.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2021Every state in 2021This day in weather historyThe tornado archive for Illinois, 2021Warnings in Illinois, June 2021
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: 960085, 960100, 960104, 960113, 960114.