Tornadoes · United States · Nebraska · 2025
Unrated tornado, Bonner, Nebraska, June 17, 2025
This Unrated tornado ran 0.1 miles across Morrill County on June 17, 2025, touching down at 5:40 PM MDT and reaching 10 yards wide. It killed nobody.
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 mph
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.
Unratedthis tornado
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 record
- Rating
- Unrated
- Date
- June 17, 2025
- Touchdown
- 5:40 PM MDT (23:40 UTC)
- Lifted
- 5:41 PM MDT (23:41 UTC)
- On the ground
- 1 minutes
- Path length
- 0.1 miles (0.2 km)
- Path width
- 10 yards (9 m)
- Deaths
- 0
- Injuries
- 0
- County
- Morrill County
- Touchdown point
- 41.981, -102.829
- Lift-off point
- 41.981, -102.828
- Record number
- 2506171740-01
The damage survey
1 damage points were recorded along this path by NWS CYS, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EFU.
- Brief landspout tornado touched down in an open field with no damage reported. Verified through a photo passed along by broadcast media.
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
What the Weather Service recorded
Following the nocturnal convection the night/morning of June 16/17, another round of severe storms developed early in the afternoon on June 17. Hail, wind, and tornadoes were reported with these storms.
Pictures verified a landspout south of Alliance. No damage was reported.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.
The county was under a severe thunderstorm watch, issued at 16:49 UTC and running to 00:44 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 06:38 UTC | 07:30 UTC | Severe Thunderstorm Warning | CYS |
| 06:40 UTC | 07:01 UTC | Severe Thunderstorm Warning | CYS |
| 07:13 UTC | 08:00 UTC | Severe Thunderstorm Warning | CYS |
| 08:10 UTC | 09:00 UTC | Severe Thunderstorm Warning | CYS |
| 16:49 UTC | 00:44 UTC | Severe Thunderstorm Watch | CYS |
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 Slight Risk. The outlook in force was issued at 20:00 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 radar
The North Platte radar (KLNX), 186 km away, was scanning. The volume nearest the touchdown began at 23:37 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 |
|---|---|---|---|---|
| 23:40 UTC | TORNADO | 9 Sse Alliance | Morrill, NE | investigation is needed on whether it is a landspout or tornado. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2025 tornado in NebraskaEvery tornado in Nebraska since 1950Warnings in force in Nebraska nowThe forecast where you are
The other tornadoes of June 17, 2025
21 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 17 | 11:41 AM CDT | EF0 | Escambia, FL | 0.1 | 5 | |||
| June 17 | 12:25 PM MDT | EF1 | Albany, WY | 1.6 | 450 | |||
| June 17 | 12:41 PM MDT | EF1 | Teller, CO | 0.4 | 150 | |||
| June 17 | 1:38 PM MDT | Unrated | Adams, ND | 0.9 | 50 | |||
| June 17 | 2:15 PM MDT | EF0 | Kimball, NE | 0.1 | 10 | |||
| June 17 | 2:35 PM MDT | Unrated | Niobrara, WY | 0.1 | 10 | |||
| June 17 | 2:50 PM MDT | Unrated | Niobrara, WY | 0.1 | 10 | |||
| June 17 | 3:03 PM MDT | Unrated | Converse, WY | 0.1 | 10 | |||
| June 17 | 4:25 PM CDT | EF0 | Harper, KS | 0.1 | 10 | |||
| June 17 | 6:09 PM EDT | EF1 | Bedford, PA | 1.1 | 175 | $60,000 | ||
| June 17 | 8:06 PM CDT | EF2 | Ellis, OK | 14.3 | 1,200 | $105,000 | ||
| June 17 | 8:07 PM CDT | EF1 | Ellis, OK | 1.8 | 50 | $20,000 | ||
| June 17 | 8:16 PM CDT | Unrated | Roger Mills, OK | 0.1 | 30 | |||
| June 17 | 9:39 PM CDT | EF0 | Alfalfa, OK | 2.2 | 40 | $10,000 | ||
| June 17 | 9:52 PM CDT | Unrated | Major, OK | 2.0 | 30 | |||
| June 17 | 9:53 PM CDT | Unrated | Grant, OK | 1.0 | 30 | |||
| June 17 | 12:36 AM CDT | EF1 | Mayes, OK | 4.3 | 350 | $300,000 | ||
| June 17 | 12:42 AM CDT | EF1 | Mayes, OK | 8.2 | 750 | |||
| June 17 | 12:53 AM CDT | EF1 | Cherokee, OK | 1.8 | 700 | $10,000 | ||
| June 17 | 12:56 AM CDT | EF1 | Cherokee, OK | 6.9 | 600 | $50,000 | ||
| June 17 | 12:59 AM CDT | EF1 | Delaware, OK | 3.7 | 700 | $20,000 |
What this means
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.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.