Tornadoes · United States · Indiana · 2026
EF0 tornado, Grant County, Indiana, July 27, 2026
This EF0 tornado ran 5.6 miles across Grant County on July 27, 2026, touching down at 4:31 PM EDT and reaching 50 yards wide. It killed nobody.
Preliminary. This is NWS IWX's damage survey, filed in the Damage Assessment Toolkit as Sweester_Marion, IN. 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 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 survey
- Rating, as surveyed
- EF0, preliminary
- Date
- July 27, 2026
- Touchdown
- 4:31 PM EDT (20:31 UTC)
- Lifted
- 4:37 PM EDT (20:37 UTC)
- On the ground
- 6 minutes
- Path length
- 5.6 miles (9.0 km)
- Path width
- 50 yards (46 m)
- Deaths
- 0
- Injuries
- 0
- County
- Grant County
- Touchdown point
- 40.581, -85.772
- Lift-off point
- 40.542, -85.678
- Highest wind the damage implies
- 75 mph
- Surveyed by
- NWS IWX
- The office's name for it
- Sweester_Marion, IN
- Survey last edited
- July 29, 2026
- Record number
- None yet. SPC numbers 2026 in the spring of 2027.
What the survey found
Ground and drone surveys found a swath of sporadic wind damage from Sweetser to Marion and near Gas City Indiana. Within this swath, evidence of a weak, disorganized circulation touching down was noted in some locations. The tornadic damage began in a cornfield near W 200 N and N 500 W on the north side of Sweetser, IN. The tornado crossed over the cornfield and impacted a neighborhood on the northeast side of Sweetser. Several large tree branches were downed and a few tree trunks snapped on Allen Drive, Mary Lou Road, and Laura Lane. The tornado continued southeast, affecting residences on W Magers Road where significant tree damage occurred including a large tree falling on the roof of a house. Another residence experienced large tree branches downed along with damage to fencing. The tornado crossed N 400 and caused damage to an apartment complex including large tree branches downed and some roof damage to a few of the apartment buildings. The tornado then affected open fields before crossing State Road 18 causing damage to a trucking company facility on the south side of State Road 18. Much of the roofing material was removed, but the plywood boards remained intact. Some of the debris from the damage to this facility was tossed to the north side of State Road 18 including a steel reel. The tornado then continued southeast across open fields between County Roads 325W and 200W before causing extensive tree damage to residences from W 9th Street to W 16th Street between Buffalo Avenue and Norton Avenue. Survey results indicate a transition occurred from tornado damage to straight line wind damage on the south side of Marion to the southeast of State Road 9 and towards Gas City. Maximum winds are estimated around 75 mph.
Written by NWS IWX in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.
The warnings
No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 20:23 UTC | 21:15 UTC | Severe Thunderstorm Warning | IWX |
| 20:36 UTC | 21:15 UTC | Tornado Warning | IWX |
| 20:37 UTC | 23:31 UTC | Severe Thunderstorm Watch | IWX |
| 20:48 UTC | 21:18 UTC | Severe Thunderstorm Warning | IWX |
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 Enhanced Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:58 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.
Cncnati-Daytn, OH (KILN), 12:00Z
8.5 hours before the tornado, 207 km from the path. July 27, 2026.
- Mixed-layer CAPE
- 423 J/kg
- Mixed-layer CIN
- -154 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 937 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
- 0-3 km lapse rate
- 2.8 K/km
Cncnati-Daytn, OH (KILN), 00:00Z
3.5 hours after it, 207 km from the path. July 28, 2026.
- Mixed-layer CAPE
- 1538 J/kg
- Mixed-layer CIN
- -8 J/kg
- Surface CAPE
- 2371 J/kg
- Mixed-layer LCL
- 895 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
- 0-3 km lapse rate
- 6.6 K/km
The surface observations
Marion (MZZ), 9 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 18:35 UTC | 82.2 | 72 | 170° 4 kt | 1011.2 | ||
| 18:55 UTC | 81.3 | 72 | 180° 3 kt | 1010.8 | HZ | |
| 19:15 UTC | 80.4 | 72.7 | 0° 0 kt | 1011.2 | HZ | |
| 19:35 UTC | 79.3 | 73.2 | 0° 0 kt | 1011.2 | ||
| 19:55 UTC | 79 | 73.8 | 0° 0 kt | 1011.2 | -RA | |
| 20:15 UTC | 78.4 | 74.7 | 90° 6 kt | 1010.5 | -RA | |
| 20:35 UTC | 77 | 74.3 | 0° 0 kt | 1011.5 | -RA | |
| 20:55 UTC | 350° 26 kt | 44 | 1013.2 | +RA | ||
| 21:15 UTC | 66.7 | 63.5 | 20° 3 kt | 1014.2 | -RA | |
| 21:35 UTC | 68 | 63.7 | 0° 0 kt | 1013.2 | RA | |
| 21:55 UTC | 68 | 64.2 | 110° 6 kt | 1011.9 | -RA | |
| 22:15 UTC | 68 | 64.8 | 150° 6 kt | 1010.5 |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Northern Indiana radar (KIWX), 89 km away, was scanning. The volume nearest the touchdown began at 20:31 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 |
|---|---|---|---|---|
| 20:05 UTC | TSTM WND DMG | Walton | Cass, IN | Emergency Manager reported large tree branch downed onto front entry way of a house in Walton in Cass County Indiana. Time radar estimated. |
| 20:05 UTC | TSTM WND DMG | Walton | Cass, IN | Large tree limbs downed between May and Gretchen roads. Time estimated from radar. |
| 20:10 UTC | TSTM WND DMG | 1 Wnw Peru | Miami, IN | 6 to 8 inch tree limbs downed. |
| 20:10 UTC | TSTM WND DMG | Walton | Cass, IN | Large tree branch downed near Duchess Street and Walnut Street. Time estimated from radar. |
| 20:14 UTC | TSTM WND GST 60 | 2 S Grissom Afb | Miami, IN | AWOS station KGUS Grissom AFB Peru. |
| 20:15 UTC | TSTM WND DMG | 1 Ne Peru | Miami, IN | Large tree down at the intersection of East 5th Street and South Wayne Street in Peru. Time estimated via radar. |
| 20:18 UTC | TSTM WND DMG | 1 Sse Galveston | Cass, IN | Powerlines down. |
| 20:18 UTC | TSTM WND GST 60 | 2 S Grissom Afb | Miami, IN | AWOS station KGUS Grissom AFB Peru. |
| 20:20 UTC | TSTM WND DMG | 2 Se Peru | Miami, IN | Photo on Facebook of a large tree down on Cherry Lane in Peru. Time estimated via radar. |
| 20:20 UTC | TSTM WND DMG | Galveston | Cass, IN | Large tree branches downed North Lincoln and East North Street in Galveston. Time estimated from radar. |
| 20:20 UTC | TSTM WND DMG | Miami | Miami, IN | Large tree snapped south of the intersection of 900 S and 150 W. Time estimated via radar. |
| 20:30 UTC | TSTM WND DMG | 5 Nne Russiaville | Howard, IN | Trees downed in multiple locations in Howard county. Time estimated from radar. |
| 20:30 UTC | TSTM WND DMG | Kokomo | Howard, IN | Trees down across Howard County. |
| 20:30 UTC | TSTM WND DMG | Galveston | Cass, IN | Tree down onto home in Galveston. No known injuries. Time estimated via radar. |
| 20:30 UTC | TSTM WND DMG | Galveston | Cass, IN | Tree down onto powerlines in Galveston. Time estimated via radar. |
| 20:31 UTC | TORNADO | 1 Nnw Sweetser | Grant, IN | Ground and drone surveys found a swath of sporadic wind damage from Sweetser to Marion and near Gas City Indiana. Within this swath, evidence of a weak, disorganized circulation touching down was noted in some locations. |
| 20:35 UTC | TSTM WND DMG | 1 S Marion | Grant, IN | Trees downed on south side of Marion, IN. Time estimated from radar. |
| 20:40 UTC | FUNNEL CLOUD | Home Corner | Grant, IN | Several reports of trees down in and around Home Corner between East 32nd Street and East 38th Street. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 E Sweetser | Grant, IN | Video showing minor roof damage and several trees down at Colonial Crest Apartments between Sweetser and Marion. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 S Home Corner | Grant, IN | Tree down on South Adams Street between Marion and Gas City. |
| 20:40 UTC | TSTM WND DMG | 1 S Marion | Grant, IN | Tree down at West 28th Street and South Nebraska Street. Small tree limbs also in the road. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 Ssw Marion | Grant, IN | Tree down on South Western Avenue behind Culvers. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 Sw Home Corner | Grant, IN | Several trees down at the intersection of East 48th Street and Meridian. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 W Marion | Grant, IN | Photos on Facebook posted by the homeowner showing several large trees and tree limbs down onto a home on South Fairfield Drive. No injuries. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 1 Wsw Home Corner | Grant, IN | Broadcast media shared several trees down around the Indiana Wesleyan campus on the south side of Marion. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 2 Sw Home Corner | Grant, IN | Several trees down on West 54th Street. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 2 W Marion | Grant, IN | Photo on Facebook showing several large trees have tops sheared off at 10th Street and South Virginia Avenue. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 2 W Marion | Grant, IN | Trees down at West 12th Street and South Michigan Avenue. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | 2 Wnw Jonesboro | Grant, IN | Trees and powerlines down near the Marian Municipal Airport. |
| 20:40 UTC | TSTM WND DMG | Home Corner | Grant, IN | Corrects the report type from Home Corner. Several reports of trees down in and around Home Corner between East 32nd Street and East 38th Street. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | Jonesboro | Grant, IN | Trees and powerlines down in Jonesboro. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | Swayzee | Grant, IN | Large tree down in Swayzee. Time estimated via radar. |
| 20:40 UTC | TSTM WND DMG | Sweetser | Grant, IN | Several trees snapped in Sweetser. Time estimated via radar. |
| 20:40 UTC | TSTM WND GST 60 | Marion | Grant, IN | Estimated wind gusts of 60 mph in Marion. Time estimated via radar. |
| 20:45 UTC | FUNNEL CLOUD | 2 Wnw Upland | Grant, IN | Report of a possible funnel cloud on S 700 E. Time estimated to be around 4:45 PM EDT. |
| 20:45 UTC | FUNNEL CLOUD | Gas City | Grant, IN | Broadcast media shared an INDOT camera view at the I-69 259.1 mile marker facing west towards Gas City showing what appears to be a rotating funnel cloud. Time on video is 4:45 PM EDT. |
| 20:45 UTC | TSTM WND DMG | 1 S Home Corner | Grant, IN | Trees down blocking SR 15 between Marion and Gas City. Time estimated via radar. |
| 20:45 UTC | TSTM WND DMG | 1 S Marion | Grant, IN | Corrects time of previous tstm wnd dmg report from 1 S Marion. Trees downed on south side of Marion, IN. Time estimated from radar. |
| 20:50 UTC | TSTM WND DMG | 1 Ssw Lake Wood | Grant, IN | Metal roof taken off of a barn at 100S and 500E inGrant County. Time estimated via radar. |
| 20:50 UTC | TSTM WND DMG | Gas City | Grant, IN | Photo on Facebook of a large tree snapped on the north side of Gas City. Time estimated via radar. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2026 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are
The other tornadoes of July 27, 2026
9 more have been surveyed in the United States that day, so far.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| July 27 | 11:55 AM CDT | EF0 | DuPage, IL | 0.9 | 75 | |||
| July 27 | 11:55 AM CDT | EF0 | DuPage, IL | 1.0 | 75 | |||
| July 27 | 11:56 AM CDT | EF3 | Appleton-Menasha tornado, WI | 13.2 | 1,500 | 68 | ||
| July 27 | 12:09 PM CDT | EF0 | DuPage, IL | 2.2 | 100 | |||
| July 27 | 12:28 PM CDT | EF0 | Will, IL | 2.5 | 110 | |||
| July 27 | 12:34 PM CDT | EF0 | Cook, IL | 2.9 | 250 | |||
| July 27 | 12:47 PM CDT | EF1 | Cook, IL | 11.4 | 200 | 12 | ||
| July 27 | 12:58 PM CDT | EF1 | Cook, IL to IN | 3.7 | 225 | 2 | ||
| July 27 | 6:14 PM CDT | EF0 | Vermilion, IL | 1.0 | 30 |
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.