EF1 tornado, Plymouth Muni Arpt to Bourbon, Indiana, June 11, 2026

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, as surveyed

EF1, preliminary

Date

June 11, 2026

Touchdown

10:11 PM EDT (02:11 UTC)

Lifted

10:12 PM EDT (02:12 UTC)

On the ground

1 minutes

Path length

0.7 miles (1.2 km)

Path width

125 yards (114 m)

Deaths

0

Injuries

0

County

Marshall County

Touchdown point

41.352, -86.262

Lift-off point

41.360, -86.254

Highest wind the damage implies

90 mph

Surveyed by

NWS IWX

The office's name for it

Plymouth, IN

Survey last edited

June 13, 2026

Record number

None yet. SPC numbers 2026 in the spring of 2027.

A brief tornado spun up south of 8A on King Rd, uprooting or snapping multiple trees and causing damage to a barn. The tornado continued northeast, flipping a center pivot before entering a grove of trees causing several snapped trees. The circulation moved quickly northeast, knocking down a few more trees north of 8A Rd. The tornado quickly lifted on the north side of 8A Rd after doing significant damage to a barn.

Written by NWS IWX in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.

12 damage points were recorded along this path by NWS IWX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.

• Minor tree damage. Likely start of tornado and source of CC drop out before tornado went into field.
• Snapped tees at edge of woodline. Matches perfectly to CC drop out
• Single property has medium sized tree snapped at base, part of metal roof removed from barn, and another 2 old barns collapsed
• Trees snapped and empty feed silo tipped over to the west nearby

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

A squall line raced through northern Indiana and spawned numerous tornadoes. Most tornadoes were narrow and lasted less then 10 minutes. Additional areas of straight line wind damage were noted as well.

A brief tornado spun up south of 8A on King Rd, uprooting or|snapping multiple trees and causing damage to a barn. The tornado|continued northeast, flipping a center pivot before entering a|grove of trees causing several snapped trees. The circulation|moved quickly northeast, knocking down a few more trees north of|8A Rd. The tornado quickly lifted on the north side of 8A Rd|after doing significant damage to a barn.

A brief EF-0 tornado with maximum winds estimated at 75 mph|touched down on the far southwest side of Argos in Marshall|County. Damage along the path was largely confined to trees.|Special thanks to the Marshall County EMA and Argos FD for|assisting with the survey.

Another tornado, perhaps from the same parent circulation that|spawned the Argos tornado, developed on the northeast side of|Bourbon in Marshall County. The tornado touched down in a field,|with tree damage observed in the distance just east of Beech Road|and north of 10B Road. The tornado raced northeastward, striking|a property where two old barns collapsed and a third was damaged.|Metal roofing material was also blown off, and several trees|sustained major damage, consistent with an EF-1 rating. The|tornado then crossed the county line into Kosciusko County, where|it impacted multiple Amish properties. In this area, a camper was|flipped, several softwood trees were snapped, and maximum winds|were estimated at 90 to 100 mph.

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

0 minutes of warning. NWS IWX issued a tornado warning for this county at 02:11 UTC, 0 minutes before the tornado touched down, in force until 02:30 UTC.

The county was under a tornado watch, issued at 00:08 UTC and running to 03:00 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 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 01:00 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.

Plymouth (C65), 4 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The Northern Indiana radar (KIWX), 47 km away, was scanning. The volume nearest the touchdown began at 02:11 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 2026 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are

65 more have been surveyed in the United States that day, so far.

All 66 of them

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.

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.