EF1 tornado, Sherburnville, Illinois, July 15, 2024

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

EF1

Date

July 15, 2024

Touchdown

9:51 PM CDT (02:51 UTC)

Lifted

9:53 PM CDT (02:53 UTC)

On the ground

2 minutes

Path length

2.6 miles (4.2 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

County

Kankakee County

Touchdown point

41.264, -87.587

Lift-off point

41.278, -87.541

Record number

2407152051-01

306 damage points were recorded along this path by NWS LOT, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EFU. The highest wind the damage implies is 90 mph.

• Possible damage to large interstate billboard. Pieces of metal cow advertisement next to interstate to east of sign. Previous imagery from this area shows advertisement with metal cow attached to SE side of billboard.
• Numerpus large branches downed. One small branch on a house.
• Numerous large rqnches downed. Flattened corn in field.
• Large branches piled at curb.

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

A derecho moved across northern Illinois during the evening of July 15th producing widespread wind damage and 30 tornadoes in northeast Illinois. One of these tornadoes crossed into northwest Indiana. At the height of the storms, 430,000 customers lost power with some power not restored for four days, on July 19th.

A tornado with estimated peak winds of 90 mph touched down in a field just east of County Road N 14500 E and north of County Road E 9000 N. Just after touch down, the tornado peeled off a significant portion of roofing material off a building at a food facility near County Road N 16000 E. A semi trailer was rolled over in an adjacent parking lot. The tornado was likely at peak intensity in this area. The tornado moved northeast across mainly open fields resulting in little damage until after it crossed County Road N 16750 E where numerous trees were damaged and a few homes sustained shingle and fascia damage. The tornado ended just northeast of this area, in a field just west of County Road N 17500 E.

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

14 minutes of warning. NWS LOT issued a tornado warning for this county at 02:37 UTC, 14 minutes before the tornado touched down, in force until 03:15 UTC.

The county was under a tornado watch, issued at 23:53 UTC and running to 03:20 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 0.10 chance of a tornado within 25 miles. The outlook in force was issued at 00:47 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.

The Chicago radar (KLOT), 57 km away, was scanning. The volume nearest the touchdown began at 02:53 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 2024 tornado in IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are

61 more were confirmed in the United States that day.

All 62 of them

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.