Tornadoes · United States · Illinois · 2026
EF1 tornado, Piatt and Champaign counties, Illinois, April 27, 2026
This EF1 tornado ran 15.5 miles across Piatt and Champaign counties on April 27, 2026, touching down at 6:55 PM CDT and reaching 500 yards wide. It killed nobody.
Preliminary. This is NWS ILX's damage survey, filed in the Damage Assessment Toolkit as Galesville - Mahomet Tornado. The rating, the path and the casualties are the survey's and can change while it is revised. The Storm Prediction Center compiles the official record of 2026 from these surveys and publishes it in the spring of 2027; this page moves to that tornado's permanent address when it does.
The rating scale
Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.
EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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.
The survey
- Rating, as surveyed
- EF1, preliminary
- Date
- April 27, 2026
- Touchdown
- 6:55 PM CDT (23:55 UTC)
- Lifted
- 7:09 PM CDT (00:09 UTC)
- On the ground
- 14 minutes
- Path length
- 15.5 miles (24.9 km)
- Path width
- 500 yards (457 m)
- Deaths
- 0
- Injuries
- 0
- Counties
- Piatt and Champaign counties
- Touchdown point
- 40.147, -88.604
- Lift-off point
- 40.229, -88.333
- Highest wind the damage implies
- 93 mph
- Surveyed by
- NWS ILX
- The office's name for it
- Galesville - Mahomet Tornado
- Survey last edited
- April 30, 2026
- Record number
- None yet. SPC numbers 2026 in the spring of 2027.
What the survey found
The tornado spun up west of Galesville, damaging trees and causing roof and structural damage to farm outbuildings. It continued tracking northeast into the northern side of Mahomet, causing extensive tree damage. The tornado dissipated a couple of miles northeast of Lake of the Woods near the intersection of County Road 700 and 2400N.
Written by NWS ILX in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.
The damage survey
109 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 100 mph.
- Not an exact address. Photo of tree on home in Lane. May have been north of rotation track, unless location was actually south of Lane.
- Several stop signs damaged and leaning
- Northern extent of pole damage
- Southern extent of pole damage
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
The forecast that day
The Storm Prediction Center had this point in a Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 19:49 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 air that afternoon
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.
Lincoln, IL (KILX), 12:00Z
11.9 hours before the tornado, 12 km from the path. April 27, 2026.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -7856 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1053 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.7 K/km
Lincoln, IL (KILX), 00:00Z
0.1 hours after it, 12 km from the path. April 28, 2026.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -871 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1082 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- -57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.1 K/km
The surface observations
Champaign - Willard (CMI), 24 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 00:00 UTC |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Lincoln radar (KILX), 74 km away, was scanning. The volume nearest the touchdown began at 23:55 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.
This ground now
The live radar over the trackEvery 2026 tornado in IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are
The other tornadoes of April 27, 2026
28 more have been surveyed in the United States that day, so far.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| April 27 | 3:31 AM CDT | EF1 | Leavenworth, KS | 2.1 | 50 | |||
| April 27 | 5:38 AM CDT | EF0 | Johnson, KS | 0.1 | 0 | |||
| April 27 | 5:45 AM CDT | EF1 | Johnson, KS | 0.1 | 0 | |||
| April 27 | 6:52 AM CDT | EF2 | Saline, MO | 36.5 | 350 | |||
| April 27 | 7:11 AM CDT | EF1 | Chariton, MO | 24.5 | 300 | |||
| April 27 | 7:29 AM CDT | EF0 | Randolph, MO | 8.6 | 50 | |||
| April 27 | 7:43 AM CDT | EF1 | Monroe, MO | 1.8 | 400 | |||
| April 27 | 1:41 PM CDT | EF0 | Madison, IL | 0.3 | 25 | |||
| April 27 | 4:44 PM EDT | EF1 | Jackson, IN | 3.7 | 100 | |||
| April 27 | 6:14 PM CDT | EF1 | Logan, IL | 14.9 | 400 | |||
| April 27 | 6:32 PM CDT | EF1 | DeWitt, IL | 6.0 | 400 | |||
| April 27 | 6:41 PM CDT | EF1 | DeWitt, IL | 14.1 | 500 | |||
| April 27 | 6:42 PM CDT | EF1 | DeWitt, IL | 0.6 | 75 | |||
| April 27 | 6:48 PM CDT | Unrated | Saint Charles, MO | 0.6 | 10 | |||
| April 27 | 7:52 PM CDT | EF1 | Cleburne, AR | 1.4 | 100 | |||
| April 27 | 7:53 PM CDT | EF1 | Saint Clair, IL | 9.7 | 350 | |||
| April 27 | 8:02 PM CDT | EF0 | Shannon, MO | 3.5 | 150 | |||
| April 27 | 8:06 PM CDT | EF1 | Clinton, IL | 11.7 | 350 | |||
| April 27 | 10:50 PM EDT | EF1 | Morgan, IN | 2.7 | 150 | |||
| April 27 | 10:54 PM EDT | EF0 | Morgan, IN | 0.8 | 50 | |||
| April 27 | 10:30 PM CDT | EF1 | Stone, AR | 13.5 | 400 | |||
| April 27 | 11:56 PM CDT | EF0 | Hopkins, KY | 3.2 | 50 | |||
| April 27 | 12:08 AM CDT | EF1 | McLean, KY | 7.0 | 125 | |||
| April 27 | 12:16 AM CDT | EF0 | Jackson, AR | 0.6 | 50 | |||
| April 27 | 12:19 AM CDT | EF0 | Ohio, KY | 1.9 | 150 | |||
| April 27 | 12:25 AM CDT | EF0 | Dyer, TN | 1.0 | 100 | |||
| April 27 | 12:30 AM CDT | EF1 | Ohio, KY | 1.8 | 110 | |||
| April 27 | 12:48 AM CDT | Unrated | Poinsett, AR | 0.5 | 50 |
What this means
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.
Sources
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.