EF0 tornado, Nielsville to Beltrami, Minnesota, July 7, 2025

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

EF0

Date

July 7, 2025

Touchdown

8:29 PM CDT (01:29 UTC)

Lifted

8:30 PM CDT (01:30 UTC)

On the ground

1 minutes

Path length

0.6 miles (1.0 km)

Path width

10 yards (9 m)

Deaths

0

Injuries

0

County

Polk County

Touchdown point

47.560, -96.820

Lift-off point

47.550, -96.810

Record number

2507071929-01

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

• Multiple large trees either split or snapped.
• Grain bin ripped from anchoring and blown quarter mile into field
• Branches up to 6" in diameter broken
• A weakly built machinery shed had the south 1/3 collapsed. Main support structure was wooden trusses for walls and steel rafters covered by sheet metal on all sides. Insulation was strewn south with trees likely shielding the yard preventing further damage.

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

Severe thunderstorms including supercells produced large hail, damaging winds and tornadoes across parts of eastern North Dakota and west central Minnesota.

Nielsville FD reported multiple brief touchdowns near the pilling station lasting no more than 30 seconds and doing no reported damage other that stripping some leaves off crops. Spotters also reported a funnel with intermittent touchdowns near the Nielsville pilling station.

This tornado tracked NW to SE with a final S push as it occluded. It tracked for about 5.3 miles, with roughly 0.68 miles in Polk County and the remaining track in Norman County. EF0 damage was noted in Polk County, with EF1 damage in Norman County.

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

34 minutes of warning. NWS FGF issued a tornado warning for this county at 00:55 UTC, 34 minutes before the tornado touched down, in force until 01:45 UTC.

The county was under a severe thunderstorm watch, issued at 20:26 UTC and running to 02:44 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 Marginal Risk. The outlook in force was issued at 00:42 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.

Crookston Municipal (CKN), 35 km from the path, in the two hours either side.

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

The Fargo/Grand Forks radar (KMVX), 38 km away, was scanning. The volume nearest the touchdown began at 01:30 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 2025 tornado in MinnesotaEvery tornado in Minnesota since 1950Warnings in force in Minnesota nowThe forecast where you are

8 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.