Tornadoes · United States · Illinois · 2024
EF0 tornado, DuPage County, Illinois, July 15, 2024
This EF0 tornado ran 0.8 miles across DuPage County on July 15, 2024, touching down at 9:29 PM CDT and reaching 50 yards wide. It killed nobody.
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 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
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 record
- Rating
- EF0
- Date
- July 15, 2024
- Touchdown
- 9:29 PM CDT (02:29 UTC)
- Lifted
- 9:30 PM CDT (02:30 UTC)
- On the ground
- 1 minutes
- Path length
- 0.8 miles (1.3 km)
- Path width
- 50 yards (46 m)
- Deaths
- 0
- Injuries
- 0
- County
- DuPage County
- Touchdown point
- 41.887, -87.978
- Lift-off point
- 41.891, -87.963
- Record number
- 2407152029-01
The damage survey
292 damage points were recorded along this path by NWS LOT, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 94 mph.
- North edge just north of 52nd st
- unhealthy but laying different direction
- Siding blown in facing east
- rush hospital park to west trees uprooted branches different dirs
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
The warnings
37 minutes of warning. NWS LOT issued a tornado warning for this county at 01:52 UTC, 37 minutes before the tornado touched down, in force until 02:30 UTC.
The county was under a tornado watch, issued at 23:53 UTC and running to 03:20 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 23:00 UTC | 04:07 UTC | Flood Watch | LOT |
| 23:53 UTC | 03:20 UTC | Tornado Watch | LOT |
| 01:52 UTC | 02:30 UTC | Tornado Warning | LOT |
| 01:52 UTC | 03:15 UTC | Severe Thunderstorm Warning | LOT |
| 02:10 UTC | 02:34 UTC | Tornado Warning | LOT |
| 02:16 UTC | 03:00 UTC | Tornado Warning | LOT |
| 02:27 UTC | 02:40 UTC | Tornado Warning | LOT |
| 02:29 UTC | 05:15 UTC | Flash Flood Warning | LOT |
| 05:15 UTC | 09:00 UTC | Flood Advisory | LOT |
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 forecast that day
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 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), 00:00Z
2.5 hours before the tornado, 200 km from the path. July 16, 2024.
- Mixed-layer CAPE
- 3169 J/kg
- Mixed-layer CIN
- -39 J/kg
- Surface CAPE
- 5530 J/kg
- Mixed-layer LCL
- 1385 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 22.3
- 0-3 km lapse rate
- 6.5 K/km
Lincoln, IL (KILX), 12:00Z
9.5 hours after it, 200 km from the path. July 16, 2024.
- Mixed-layer CAPE
- 675 J/kg
- Mixed-layer CIN
- -163 J/kg
- Surface CAPE
- 14 J/kg
- Mixed-layer LCL
- 819 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
- 0-3 km lapse rate
- 3.5 K/km
The surface observations
Chicago OHare (ORD), 9 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 00:30 UTC | 180° 8 kt | 1005.1 | -RA | |||
| 00:35 UTC | 170° 8 kt | 1005.1 | -RA | |||
| 00:40 UTC | 180° 9 kt | 1004.7 | ||||
| 00:45 UTC | 180° 10 kt | 1004.4 | ||||
| 00:50 UTC | 190° 11 kt | 1004.4 | ||||
| 00:51 UTC | 87 | 77 | 190° 11 kt | 1004.4 | ||
| 00:55 UTC | 190° 11 kt | 1004.7 | ||||
| 01:00 UTC | 180° 11 kt | 17 | 1004.7 | |||
| 01:05 UTC | 180° 7 kt | 1004.7 | ||||
| 01:10 UTC | 180° 8 kt | 1004.4 | ||||
| 01:13 UTC | 86 | 78 | 180° 8 kt | 1004.1 | ||
| 01:15 UTC | 180° 8 kt | 16 | 1004.1 | |||
| 01:20 UTC | 180° 8 kt | 16 | 1004.1 | |||
| 01:25 UTC | 180° 8 kt | 16 | 1004.1 | |||
| 01:30 UTC | 180° 8 kt | 16 | 1003.7 | |||
| 01:35 UTC | 180° 8 kt | 16 | 1003.7 | |||
| 01:40 UTC | 180° 8 kt | 16 | 1003.7 | |||
| 01:45 UTC | 180° 8 kt | 16 | 1003.7 | |||
| 01:50 UTC | 160° 9 kt | 1003.4 | ||||
| 01:51 UTC | 86 | 79 | 170° 9 kt | 18 | 1003.4 | |
| 01:55 UTC | 170° 11 kt | 1003.4 | ||||
| 02:00 UTC | 170° 9 kt | 1003 | ||||
| 02:05 UTC | 180° 10 kt | 15 | 1002.7 | |||
| 02:10 UTC | 180° 11 kt | 1003 | ||||
| 02:15 UTC | 170° 8 kt | 1003 | ||||
| 02:20 UTC | 1003.4 | |||||
| 02:24 UTC | 87 | 79 | 180° 13 kt | 24 | 1003.4 | |
| 02:25 UTC | 17 | 1003.4 | ||||
| 02:30 UTC | 87 | 79 | 150° 10 kt | 24 | 1003 | TS |
| 02:30 UTC | 150° 10 kt | |||||
| 02:35 UTC | ||||||
| 02:40 UTC | 52 | -RA | ||||
| 02:42 UTC | 75 | 70 | 310° 35 kt | 54 | 1004.4 | TSRA SQ |
| 02:49 UTC | 71.6 | 69.8 | 320° 29 kt | 54 | 1006.1 | +TSRA BR SQ |
| 02:50 UTC | 54 | 1006.4 | +RA BR SQ | |||
| 02:51 UTC | 71 | 69 | 320° 24 kt | 50 | 1006.4 | +TSRA BR SQ |
| 02:55 UTC | 1006.8 | +RA BR SQ | ||||
| 02:59 UTC | 71 | 69 | 340° 16 kt | 35 | 1006.8 | TSRA BR |
| 03:00 UTC | 340° 16 kt | 23 | 1006.8 | RA BR | ||
| 03:05 UTC | 350° 18 kt | 22 | 1006.4 | RA BR | ||
| 03:06 UTC | 71 | 70 | 360° 17 kt | 25 | 1006.4 | TSRA BR |
| 03:10 UTC | 21 | 1006.4 | -RA BR | |||
| 03:15 UTC | 1006.8 | -RA BR | ||||
| 03:20 UTC | 320° 9 kt | 1007.5 | -RA BR | |||
| 03:24 UTC | 71 | 70 | 350° 11 kt | 1007.8 | TSRA BR | |
| 03:25 UTC | 1007.8 | RA BR | ||||
| 03:30 UTC | 1007.5 | RA BR | ||||
| 03:35 UTC | 340° 7 kt | 1007.5 | RA BR | |||
| 03:40 UTC | 310° 5 kt | 1007.8 | RA BR | |||
| 03:45 UTC | 280° 5 kt | 1008.1 | RA BR | |||
| 03:48 UTC | 71.6 | 69.8 | 280° 3 kt | 1008.1 | TSRA BR | |
| 03:50 UTC | 300° 2 kt | 1007.8 | RA BR | |||
| 03:51 UTC | 71 | 70 | 3 kt | 1007.8 | TSRA BR | |
| 03:55 UTC | 220° 7 kt | 1008.1 | RA BR | |||
| 04:00 UTC | 220° 8 kt | 1008.1 | RA BR | |||
| 04:05 UTC | 220° 4 kt | 1007.8 | RA BR | |||
| 04:10 UTC | 210° 4 kt | 1007.5 | RA BR | |||
| 04:15 UTC | 200° 5 kt | 1007.1 | -RA BR | |||
| 04:20 UTC | 200° 5 kt | 1007.1 | -RA | |||
| 04:21 UTC | 71 | 70 | 200° 6 kt | 1007.1 | -TSRA | |
| 04:25 UTC | 210° 8 kt | 1007.5 | -RA |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Chicago radar (KLOT), 33 km away, was scanning. The volume nearest the touchdown began at 02:28 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.
What was reported nearby
Local storm reports within 60 km of the path, in the three hours either side.
| Time (UTC) | Report | Where | County | Remark |
|---|---|---|---|---|
| 00:05 UTC | TSTM WND DMG | Lindenhurst | Lake, IL | large tree reported down on power line. |
| 00:47 UTC | HAIL 1 | 2 S Beach Park | Lake, IL | Public report of quarter size hail in Beach Park. Relayed via mping. Time estimated by radar. |
| 00:53 UTC | TSTM WND GST 90 | Lansing | Cook, IL | Damaging winds estimated between 80 and 90 mph caused substantial damage in three concentrated areas. The first was near Thorton Road between Paxton Ave and Oak Ave, second was from I-80 to Ridge Road between Wentworth a |
| 00:58 UTC | FLOOD | 1 Ese Gurnee | Lake, IL | report of railroad underpass near old grand ave & depot road flooded and impassable. |
| 01:15 UTC | FLOOD | 1 Ese Gurnee | Lake, IL | grand ave just east of oplaine road flooded and impassable at the railroad underpass. |
| 01:34 UTC | TSTM WND DMG | 1 Ne Sycamore | De Kalb, IL | Possible tree damage northeast of Sycamore. Relayed via mping. Time estimated by radar. |
| 01:38 UTC | TORNADO | Maple Park | Kane, IL | Radar data from KLOT depicted a circulation with a brief tornado debris signature. Imagery from Sentinel2 depicted damage to crops in the path of rotation. Unable to assigned a rating so it will be classified as an EF-U. |
| 01:40 UTC | FLOOD | 2 S Beach Park | Lake, IL | Public report of street flooding near Beach Park. Relayed via mping. |
| 01:49 UTC | TORNADO | 1 E Big Rock | Kane, IL | EF-1 tornado with winds of 95 mph. |
| 01:51 UTC | TSTM WND DMG | 2 E Big Rock | Kane, IL | Public report of possible tree damage southeast of Big Rock. Time estimated by radar. Relayed via mping. |
| 01:52 UTC | TORNADO | 3 Nw Sugar Grove | Kane, IL | EF-0 tornado with winds of 85 mph. |
| 01:53 UTC | TSTM WND DMG | 1 W Sugar Grove | Kane, IL | Public report of tree snapped in Sugar Grove. Time estimated by radar. |
| 01:55 UTC | FUNNEL CLOUD | 3 W Montgomery | Kane, IL | Public report of a funnel cloud visible to the northwest from the west side of Montgomery. |
| 01:55 UTC | TSTM WND GST 64 | 1 Ne Lily Lake | Kane, IL | Public report of 64 mph wind gust north of Lily Lake. Report also indicates multiple large branches downed near IL-47 and Empire Road. Additional public reports of tree damage received in the vicinity. Time estimated by |
| 01:55 UTC | TORNADO | 3 Nnw Yorkville | Kendall, IL | EF-1 tornado with winds of 100 mph. |
| 01:57 UTC | TSTM WND GST 70 | 2 Wnw Sugar Grove | Kane, IL | ASOS measured 61 kt gust at Aurora Municipal Airport (KARR). |
| 01:58 UTC | TSTM WND DMG | 2 W St. Charles | Kane, IL | Public report of large branch downed west of St Charles. Time estimated by radar. Relayed via mping. |
| 02:01 UTC | TSTM WND DMG | North Aurora | Kane, IL | trees and power lines down in area with minor house and vehicle damage. Time estimated by radar. |
| 02:02 UTC | TSTM WND DMG | 1 W North Aurora | Kane, IL | Public report of possible tree damage west of North Aurora. Time estimated by radar. Relayed via mping. |
| 02:02 UTC | TSTM WND DMG | Oswego | Kendall, IL | Public report of possible tree damage on the southwest side of Oswego. Relayed via mping. Time estimated by radar. |
| 02:04 UTC | FUNNEL CLOUD | 1 Ese Boulder Hill | Kendall, IL | |
| 02:04 UTC | TSTM WND DMG | 1 E Oswego | Kendall, IL | Roof damage to multiple homes near Southbury Boulevard and Lakeshore Drive in Oswego. Time estimated by radar. |
| 02:04 UTC | TSTM WND DMG | Oswego | Kendall, IL | 5-6 inch trees down. |
| 02:07 UTC | TORNADO | 4 S Plattville | Kendall, IL | *** 2 INJ *** EF-1 tornado with winds of 110 mph. |
| 02:11 UTC | TSTM WND DMG | 5 E Plattville | Kendall, IL | Public report of damage to shingles, trees, and fences near Arbeiter Road and Wildspring Parkway in west Joliet. Time estimated by radar. |
| 02:12 UTC | TORNADO | 5 Nw Shorewood | Kendall, IL | EF-0 tornado with winds of 80 mph. |
| 02:13 UTC | TSTM WND GST 60 | Dupage Airport | Dupage, IL | 52 kt gust measured by KDPA ASOS. |
| 02:14 UTC | TORNADO | 3 Sw Channahon | Grundy, IL | *** 2 INJ *** EF-2 tornado with winds of 120 mph. |
| 02:15 UTC | TSTM WND DMG | 2 N Algonquin | Mchenry, IL | Public report of possible tree damage near Algonquin. Relayed via mping. Time estimated by radar. |
| 02:15 UTC | TSTM WND DMG | 2 Sw Minooka | Grundy, IL | Possible tree damage southwest of Minooka. Time estimated by radar. Relayed via mping. |
| 02:15 UTC | TSTM WND DMG | 2 W Warrenville | Dupage, IL | large tree downed into power lines, road blocked at talbot and Rt56. Time estimated by radar. |
| 02:15 UTC | TSTM WND DMG | 3 W Channahon | Grundy, IL | Public report of large tree branch downed west of Channahon. Relayed via mping. Time estimated by radar. |
| 02:16 UTC | TSTM WND DMG | 2 N Naperville | Dupage, IL | Possible tree damage in north Naperville. Relayed via mping. Time estimated by radar. |
| 02:16 UTC | FLOOD | Oswego | Kendall, IL | washington street impassable at rt34 / rt31. |
| 02:16 UTC | TSTM WND GST 64 | 2 Nne Naperville | Dupage, IL | Measured at personal weather station KILNAPER225. |
| 02:16 UTC | TSTM WND GST 70 | Bartlett | Cook, IL | An NWS storm survey determined that a corridor of concentrated tree damage in downtown Bartlett was caused by straight-line winds estimated to be up to 70 mph. |
| 02:17 UTC | TSTM WND DMG | 1 Ne Crystal Lawns | Will, IL | Public report of possible tree damage near Gaylord Road and Frontier Lane in the Crest Hill and Joliet areas. Time estimated from radar. Relayed via mping. |
| 02:17 UTC | TSTM WND DMG | 3 S Bartlett | Dupage, IL | Public report of possible tree damage near Bartlett. Relayed via mping. |
| 02:20 UTC | TSTM WND GST 70 | 1 Ne Hanover Park | Cook, IL | An NWS storm survey determined that tree damage on the northeast side of Hanover Park was caused by straight-line winds estimated to be up to 70 mph. |
| 02:21 UTC | TSTM WND DMG | 2 Nne Elwood | Will, IL | multiple trees damaged and power poles snapped. Time estimated by radar. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2024 tornado in IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are
The other tornadoes of July 15, 2024
61 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| July 15 | 7:14 AM CDT | EF0 | Chippewa, MN | 2.2 | 25 | |||
| July 15 | 3:50 PM EDT | EF0 | Genesee, NY | 0.8 | 75 | |||
| July 15 | 4:48 PM EDT | EF0 | Ontario, NY | 0.8 | 75 | |||
| July 15 | 6:25 PM EDT | EF0 | Cortland, NY | 7.5 | 175 | $37,000 | ||
| July 15 | 5:37 PM CDT | EF1 | Polk, IA | 6.9 | 300 | $500,000 | ||
| July 15 | 6:54 PM EDT | EF1 | Chenango, NY | 8.7 | 250 | $120,000 | ||
| July 15 | 6:14 PM CDT | EF1 | Grant, WI | 0.3 | 30 | $35,000 | ||
| July 15 | 6:18 PM CDT | EF0 | Jones, IA | 1.5 | 50 | |||
| July 15 | 6:40 PM CDT | EF1 | Jo Daviess, IL | 29.8 | 100 | |||
| July 15 | 6:48 PM CDT | EF1 | Jo Daviess, IL | 8.1 | 50 | |||
| July 15 | 6:50 PM CDT | EF2 | Jo Daviess, IL | 15.4 | 150 | |||
| July 15 | 7:02 PM CDT | EF0 | Muscatine, IA to IL | 3.0 | 50 | |||
| July 15 | 7:17 PM CDT | EF1 | Rock Island, IL | 24.7 | 100 | |||
| July 15 | 7:19 PM CDT | EF1 | Scott, IA to IL | 8.0 | 100 | |||
| July 15 | 7:26 PM CDT | Unrated | Stephenson, IL | 1.0 | 10 | |||
| July 15 | 7:26 PM CDT | EF0 | Rock, WI | 1.2 | 50 | |||
| July 15 | 7:44 PM CDT | EF0 | Ogle, IL | 5.3 | 200 | |||
| July 15 | 7:58 PM CDT | EF0 | Ogle, IL | 1.7 | 150 | |||
| July 15 | 7:58 PM CDT | EF0 | Winnebago, IL | 1.2 | 100 | |||
| July 15 | 8:01 PM CDT | EF0 | Winnebago, IL | 0.2 | 25 | |||
| July 15 | 8:02 PM CDT | EF1 | Henry, IL | 5.2 | 200 | $100,000 | ||
| July 15 | 8:05 PM CDT | EF0 | Ogle, IL | 2.2 | 150 | |||
| July 15 | 8:07 PM CDT | EF1 | Knox, IL | 1.3 | 150 | |||
| July 15 | 8:07 PM CDT | EF1 | Henry, IL | 1.7 | 50 | $50,000 | ||
| July 15 | 8:15 PM CDT | EF0 | Peoria, IL | 4.3 | 80 | |||
| July 15 | 8:21 PM CDT | EF1 | Peoria, IL | 2.4 | 150 | |||
| July 15 | 8:25 PM CDT | EF0 | Peoria, IL | 2.5 | 100 | |||
| July 15 | 8:36 PM CDT | EF1 | Woodford, IL | 0.4 | 100 | |||
| July 15 | 8:38 PM CDT | EF0 | Woodford, IL | 1.4 | 80 | |||
| July 15 | 8:38 PM CDT | Unrated | DeKalb, IL | 1.8 | 50 | |||
| July 15 | 8:39 PM CDT | EF1 | Woodford, IL | 1.2 | 100 | |||
| July 15 | 8:39 PM CDT | EF1 | Tazewell, IL | 12.2 | 100 | |||
| July 15 | 8:49 PM CDT | EF1 | Kane, IL | 8.4 | 300 | |||
| July 15 | 8:51 PM CDT | Unrated | Tazewell, IL | 0.9 | 80 | |||
| July 15 | 8:52 PM CDT | EF0 | Kane, IL | 10.1 | 250 | |||
| July 15 | 8:55 PM CDT | EF1 | Kendall, IL | 19.2 | 200 | |||
| July 15 | 8:55 PM CDT | EF0 | Woodford, IL | 3.8 | 30 | |||
| July 15 | 9:06 PM CDT | EF1 | Kendall, IL | 19.5 | 250 | 2 | ||
| July 15 | 9:09 PM CDT | EF2 | Grundy, IL | 34.6 | 325 | 2 | ||
| July 15 | 9:10 PM CDT | EF0 | Kendall, IL | 17.0 | 300 | |||
| July 15 | 9:23 PM CDT | EF0 | DuPage, IL | 3.1 | 150 | |||
| July 15 | 9:33 PM CDT | EF0 | Will, IL | 2.9 | 300 | |||
| July 15 | 9:34 PM CDT | EF0 | DuPage, IL | 4.1 | 250 | |||
| July 15 | 9:35 PM CDT | EF0 | Kankakee, IL | 12.3 | 275 | |||
| July 15 | 9:36 PM CDT | EF0 | Cook, IL | 1.2 | 175 | |||
| July 15 | 9:37 PM CDT | EF1 | Cook, IL | 2.1 | 75 | |||
| July 15 | 9:41 PM CDT | EF0 | Will, IL | 6.4 | 100 | |||
| July 15 | 9:41 PM CDT | EF0 | Cook, IL | 5.7 | 300 | |||
| July 15 | 9:43 PM CDT | EF1 | Cook, IL | 5.5 | 250 | |||
| July 15 | 9:43 PM CDT | EF0 | Cook, IL | 0.4 | 85 | |||
| July 15 | 9:45 PM CDT | EF0 | Cook, IL | 0.4 | 125 | |||
| July 15 | 9:47 PM CDT | EF1 | Cook, IL | 3.2 | 150 | |||
| July 15 | 9:47 PM CDT | EF1 | Cook, IL | 3.1 | 400 | |||
| July 15 | 9:50 PM CDT | EF0 | Cook, IL | 1.4 | 150 | |||
| July 15 | 9:51 PM CDT | EF1 | Kankakee, IL | 2.6 | 100 | |||
| July 15 | 9:52 PM CDT | EF1 | Lake, IL to IN | 29.1 | 300 | |||
| July 15 | 9:58 PM CDT | EF0 | Lake, IN | 2.4 | 100 | |||
| July 15 | 10:02 PM CDT | EF0 | Lake, IN | 16.4 | 100 | |||
| July 15 | 10:32 PM CDT | EF1 | LaPorte, IN | 3.2 | 75 | $100,000 | ||
| July 15 | 12:09 AM EDT | EF0 | Marshall, IN | 0.7 | 75 | $20,000 |
What this means
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.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.