EF0 tornado, Osier, Michigan, June 30, 2026

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.

Rating, as surveyed

EF0, preliminary

Date

June 30, 2026

Touchdown

7:33 PM EDT (23:33 UTC)

Path length

0.6 miles (1.0 km)

Path width

0 yards (0 m)

Deaths

0

Injuries

0

County

Delta County

Touchdown point

46.158, -86.961

Lift-off point

46.161, -86.949

Highest wind the damage implies

85 mph

Surveyed by

NWS MQT

The office's name for it

MQT_06302026

Survey last edited

July 6, 2026

Record number

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

Path estimated using drone footage provided by Alger County Sherriff Department and ground survey.

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

9 damage points were recorded along this path by NWS MQT, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 88 mph.

• Drone footage of uprooted trees laying in different directions.

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

As a significant ridge was over the southeastern US, hot and unstable air was over Michigan's Upper Peninsula by the 30th. This warm and moist air caused unseasonable heat impacts, and forcing from an approaching upper level disturbance over the Canadian Prairie initiated thunderstorms that caused multiple forms of severe weather, including the first confirmed tornado for the Upper Peninsula since 2020.

A thunderstorm initiating in southern Marquette County continued to develop into a supercell thunderstorm as it moved east into Delta and Alger County. As the thunderstorm began splitting, the southern segment intensified and produced a weak, EF-0 tornado south of Trenary, MI in Delta County. The tornado crossed Alger Delta 43rd road and proceeded northeast before dissipating.

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

19 minutes of warning. NWS MQT issued a tornado warning for this county at 23:14 UTC, 19 minutes before the tornado touched down, in force until 00:00 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 Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:57 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 Marquette radar (KMQT), 61 km away, was scanning. The volume nearest the touchdown began at 23:32 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 MichiganEvery tornado in Michigan since 1950Warnings in force in Michigan nowThe forecast where you are

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

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.