EF1 tornado, Osbernville to Obed, Illinois, June 17, 2026

1. EF065 to 85 mph

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. EF186 to 110 mphthis tornado

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. EF2111 to 135 mph

   Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

4. EF3136 to 165 mph

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. EF4166 to 200 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. EF5over 200 mph

   Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

7. Unrated

   The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

Rating, as surveyed

EF1, preliminary

Date

June 17, 2026

Touchdown

5:05 PM CDT (22:05 UTC)

Lifted

5:16 PM CDT (22:16 UTC)

On the ground

11 minutes

Path length

10.7 miles (17.2 km)

Path width

700 yards (640 m)

Deaths

0

Injuries

0

Counties

Christian and Shelby counties

Touchdown point

39.699, -89.146

Lift-off point

39.653, -88.959

Highest wind the damage implies

110 mph

Surveyed by

NWS ILX

The office's name for it

Blue Mound Tornado

Survey last edited

June 20, 2026

Record number

None yet. SPC numbers 2026 in the spring of 2027.

The tornado began in northern Christian County in the Griswold Conservation Area, causing extensive tree damage throughout the property. It crossed the county line into Macon County, damaging more trees and structures in Blue Mound, including the roof of Meridian Elementary School. It also destroyed 2 grain bins south of the school. It tracked east-southeast, taking down electrical transmission lines and numerous large tree branches. It crossed US-51 and tracked east-southeast into Shelby County where it damaged more trees and electrical transmission lines along the Shelby/Macon county line. The tornado lifted 3 miles northeast of Moweaqua along N 1000 East Rd.

Written by NWS ILX in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.

76 damage points were recorded along this path by NWS ILX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 110 mph.

• Rolled bins but not much tree damage
• Tree damage along 100 yds of tree line
• South Pole of line of 11 replaced.
• Last of 11 poles replaced.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

Several rounds of significant convection impacted central Illinois on June 17th, 2026. Clusters of thunderstorms initially formed on the nose of a strong low-level jet streak across Iowa during the pre-dawn hours, then tracked southeastward along a warm frontal boundary into central Illinois through midday. Scattered damaging wind gusts were reported in north-central Illinois, with the most concentrated corridor of 60-70 mph winds focused along a Galesburg, to Peoria, to Chenoa line.||Thunderstorms re-developed along a remnant outflow boundary from the morning convection by mid to late afternoon, with the most intense cells materializing along and south of a Springfield to Paris line where several tornadoes occurred and hail larger than baseballs (3 diameter) was reported across portions of Moultrie, Douglas, and Coles counties. An EF2 tornado impacted the Mattoon to Charleston area, and an EF3 tracked just north of Effingham.

The tornado began in extreme northeast Christian County in the Griswold Conservation Area, causing extensive tree damage throughout the property. It then crossed into Macon County about 0.6 miles north of Route 48.

The tornado crossed from Macon County into Shelby County just east of Route 51 near Long Grove Creek. It tracked east, just south of the county line for about 1.8 miles, damaging trees and electrical transmission lines. The tornado lifted 3 miles northeast of Moweaqua along N 1000 East Rd.

The tornado touched down in extreme northeast Shelby County along E 2800 North Road where it snapped a softwood tree and removed large branches from hardwood trees. It crossed into Moultrie County at E 2800 North Road and Route 128.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

11 minutes of warning. NWS ILX issued a tornado warning for this county at 21:54 UTC, 11 minutes before the tornado touched down, in force until 22:32 UTC.

The county was under a tornado watch, issued at 19:15 UTC and running to 02:15 UTC.

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The Storm Prediction Center had this point in a Moderate Risk, with a 0.15 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 20:04 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Decatur (DEC), 24 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The Lincoln radar (KILX), 58 km away, was scanning. The volume nearest the touchdown began at 22:06 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

Local storm reports within 60 km of the path, in the three hours either side.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

The live radar over the trackEvery 2026 tornado in IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are

27 more have been surveyed in the United States that day, so far.

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. A survey can be revised, so the rating, the path and the casualties can all still change.

NWS Damage Assessment Toolkit, the record the survey teams file from the damage, and NOAA Storm Prediction Center storm reports. Neither is the official database for 2026, which SPC publishes in the spring of 2027.