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.

  1. EF065 to 85 mphthis tornado

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

  2. EF186 to 110 mph

    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.

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)ExpiredProductOffice
20:23 UTC21:15 UTCSevere Thunderstorm WarningIWX
20:36 UTC21:15 UTCTornado WarningIWX
20:37 UTC23:31 UTCSevere Thunderstorm WatchIWX
20:48 UTC21:18 UTCSevere Thunderstorm WarningIWX

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.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2026-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 423 joules per kilogram, CIN -154, lifted condensation level 937 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2026-07-27The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 1 square meters per square second, 0 to 6 km bulk shear 40 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
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

Open this sounding in Storm Lab

Cncnati-Daytn, OH (KILN), 00:00Z

3.5 hours after it, 207 km from the path. July 28, 2026.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2026-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1538 joules per kilogram, CIN -8, lifted condensation level 895 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2026-07-28The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 107 square meters per square second, 0 to 6 km bulk shear 17 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
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

Open this sounding in Storm Lab

The surface observations

Marion (MZZ), 9 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
18:35 UTC82.272170° 4 kt1011.2
18:55 UTC81.372180° 3 kt1010.8HZ
19:15 UTC80.472.70° 0 kt1011.2HZ
19:35 UTC79.373.20° 0 kt1011.2
19:55 UTC7973.80° 0 kt1011.2-RA
20:15 UTC78.474.790° 6 kt1010.5-RA
20:35 UTC7774.30° 0 kt1011.5-RA
20:55 UTC350° 26 kt441013.2+RA
21:15 UTC66.763.520° 3 kt1014.2-RA
21:35 UTC6863.70° 0 kt1013.2RA
21:55 UTC6864.2110° 6 kt1011.9-RA
22:15 UTC6864.8150° 6 kt1010.5

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)ReportWhereCountyRemark
20:05 UTCTSTM WND DMGWaltonCass, INEmergency Manager reported large tree branch downed onto front entry way of a house in Walton in Cass County Indiana. Time radar estimated.
20:05 UTCTSTM WND DMGWaltonCass, INLarge tree limbs downed between May and Gretchen roads. Time estimated from radar.
20:10 UTCTSTM WND DMG1 Wnw PeruMiami, IN6 to 8 inch tree limbs downed.
20:10 UTCTSTM WND DMGWaltonCass, INLarge tree branch downed near Duchess Street and Walnut Street. Time estimated from radar.
20:14 UTCTSTM WND GST 602 S Grissom AfbMiami, INAWOS station KGUS Grissom AFB Peru.
20:15 UTCTSTM WND DMG1 Ne PeruMiami, INLarge tree down at the intersection of East 5th Street and South Wayne Street in Peru. Time estimated via radar.
20:18 UTCTSTM WND DMG1 Sse GalvestonCass, INPowerlines down.
20:18 UTCTSTM WND GST 602 S Grissom AfbMiami, INAWOS station KGUS Grissom AFB Peru.
20:20 UTCTSTM WND DMG2 Se PeruMiami, INPhoto on Facebook of a large tree down on Cherry Lane in Peru. Time estimated via radar.
20:20 UTCTSTM WND DMGGalvestonCass, INLarge tree branches downed North Lincoln and East North Street in Galveston. Time estimated from radar.
20:20 UTCTSTM WND DMGMiamiMiami, INLarge tree snapped south of the intersection of 900 S and 150 W. Time estimated via radar.
20:30 UTCTSTM WND DMG5 Nne RussiavilleHoward, INTrees downed in multiple locations in Howard county. Time estimated from radar.
20:30 UTCTSTM WND DMGKokomoHoward, INTrees down across Howard County.
20:30 UTCTSTM WND DMGGalvestonCass, INTree down onto home in Galveston. No known injuries. Time estimated via radar.
20:30 UTCTSTM WND DMGGalvestonCass, INTree down onto powerlines in Galveston. Time estimated via radar.
20:31 UTCTORNADO1 Nnw SweetserGrant, INGround 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 UTCTSTM WND DMG1 S MarionGrant, INTrees downed on south side of Marion, IN. Time estimated from radar.
20:40 UTCFUNNEL CLOUDHome CornerGrant, INSeveral reports of trees down in and around Home Corner between East 32nd Street and East 38th Street. Time estimated via radar.
20:40 UTCTSTM WND DMG1 E SweetserGrant, INVideo showing minor roof damage and several trees down at Colonial Crest Apartments between Sweetser and Marion. Time estimated via radar.
20:40 UTCTSTM WND DMG1 S Home CornerGrant, INTree down on South Adams Street between Marion and Gas City.
20:40 UTCTSTM WND DMG1 S MarionGrant, INTree down at West 28th Street and South Nebraska Street. Small tree limbs also in the road. Time estimated via radar.
20:40 UTCTSTM WND DMG1 Ssw MarionGrant, INTree down on South Western Avenue behind Culvers. Time estimated via radar.
20:40 UTCTSTM WND DMG1 Sw Home CornerGrant, INSeveral trees down at the intersection of East 48th Street and Meridian. Time estimated via radar.
20:40 UTCTSTM WND DMG1 W MarionGrant, INPhotos 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 UTCTSTM WND DMG1 Wsw Home CornerGrant, INBroadcast media shared several trees down around the Indiana Wesleyan campus on the south side of Marion. Time estimated via radar.
20:40 UTCTSTM WND DMG2 Sw Home CornerGrant, INSeveral trees down on West 54th Street. Time estimated via radar.
20:40 UTCTSTM WND DMG2 W MarionGrant, INPhoto on Facebook showing several large trees have tops sheared off at 10th Street and South Virginia Avenue. Time estimated via radar.
20:40 UTCTSTM WND DMG2 W MarionGrant, INTrees down at West 12th Street and South Michigan Avenue. Time estimated via radar.
20:40 UTCTSTM WND DMG2 Wnw JonesboroGrant, INTrees and powerlines down near the Marian Municipal Airport.
20:40 UTCTSTM WND DMGHome CornerGrant, INCorrects 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 UTCTSTM WND DMGJonesboroGrant, INTrees and powerlines down in Jonesboro. Time estimated via radar.
20:40 UTCTSTM WND DMGSwayzeeGrant, INLarge tree down in Swayzee. Time estimated via radar.
20:40 UTCTSTM WND DMGSweetserGrant, INSeveral trees snapped in Sweetser. Time estimated via radar.
20:40 UTCTSTM WND GST 60MarionGrant, INEstimated wind gusts of 60 mph in Marion. Time estimated via radar.
20:45 UTCFUNNEL CLOUD2 Wnw UplandGrant, INReport of a possible funnel cloud on S 700 E. Time estimated to be around 4:45 PM EDT.
20:45 UTCFUNNEL CLOUDGas CityGrant, INBroadcast 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 UTCTSTM WND DMG1 S Home CornerGrant, INTrees down blocking SR 15 between Marion and Gas City. Time estimated via radar.
20:45 UTCTSTM WND DMG1 S MarionGrant, INCorrects 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 UTCTSTM WND DMG1 Ssw Lake WoodGrant, INMetal roof taken off of a barn at 100S and 500E inGrant County. Time estimated via radar.
20:50 UTCTSTM WND DMGGas CityGrant, INPhoto 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.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 2711:55 AM CDTEF0DuPage, IL0.975
July 2711:55 AM CDTEF0DuPage, IL1.075
July 2711:56 AM CDTEF3Appleton-Menasha tornado, WI13.21,50068
July 2712:09 PM CDTEF0DuPage, IL2.2100
July 2712:28 PM CDTEF0Will, IL2.5110
July 2712:34 PM CDTEF0Cook, IL2.9250
July 2712:47 PM CDTEF1Cook, IL11.420012
July 2712:58 PM CDTEF1Cook, IL to IN3.72252
July 276:14 PM CDTEF0Vermilion, IL1.030

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.