Tornadoes · United States · North Dakota · 2025
EF0 tornado, Mose, North Dakota, August 8, 2025
This EF0 tornado ran 0.6 miles across Griggs County on August 8, 2025, touching down at 3:06 AM CDT and reaching 20 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 mphthis tornado
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.
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 record
- Rating
- EF0
- Date
- August 8, 2025
- Touchdown
- 3:06 AM CDT (08:06 UTC)
- Lifted
- 3:07 AM CDT (08:07 UTC)
- On the ground
- 1 minutes
- Path length
- 0.6 miles (0.9 km)
- Path width
- 20 yards (18 m)
- Deaths
- 0
- Injuries
- 0
- County
- Griggs County
- Touchdown point
- 47.651, -98.411
- Lift-off point
- 47.650, -98.399
- Record number
- 2508080206-01
The damage survey
2 damage points were recorded along this path by NWS FGF, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EFU. The highest wind the damage implies is 70 mph.
- Satellite imagery reveals likely tornado damage seen within crops. Time estimated from KMVX radar.
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
A QLCS type mesoscale convective system brought widespread severe thunderstorm winds to eastern ND, along with, multiple brief tornadoes during the early morning hours.
This brief tornado developed about 1.7 miles west of Red Willow Lake and caused damage to crops. High resolution satellite imagery reveals ground scouring and crop damage along the short narrow path. Time estimated from KMVX radar. Maximum wind is estimated at 70 mph.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
14 minutes of warning. NWS FGF issued a tornado warning for this county at 07:52 UTC, 14 minutes before the tornado touched down, in force until 08:15 UTC.
The county was under a severe thunderstorm watch, issued at 04:57 UTC and running to 09:54 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 04:57 UTC | 09:54 UTC | Severe Thunderstorm Watch | FGF |
| 07:41 UTC | 08:45 UTC | Severe Thunderstorm Warning | FGF |
| 07:52 UTC | 08:15 UTC | Tornado Warning | FGF |
| 08:10 UTC | 08:30 UTC | Tornado Warning | FGF |
| 08:16 UTC | 08:45 UTC | Severe Thunderstorm Warning | FGF |
| 08:23 UTC | 08:35 UTC | Severe Thunderstorm Warning | FGF |
| 08:34 UTC | 09:30 UTC | Severe Thunderstorm Warning | FGF |
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 06:00 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 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.
Bismarck Municip, ND (KBIS), 00:00Z
8.1 hours before the tornado, 199 km from the path. August 8, 2025.
- Mixed-layer CAPE
- 2718 J/kg
- Mixed-layer CIN
- -56 J/kg
- Surface CAPE
- 4512 J/kg
- Mixed-layer LCL
- 1242 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 11.1
- 0-3 km lapse rate
- 5.9 K/km
Bismarck Municip, ND (KBIS), 12:00Z
3.9 hours after it, 199 km from the path. August 8, 2025.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -7585 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1417 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -237 m²/s²
- 0-3 km storm-relative helicity
- -325 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 3.1 K/km
The radar
The Fargo/Grand Forks radar (KMVX), 82 km away, was scanning. The volume nearest the touchdown began at 08:06 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 |
|---|---|---|---|---|
| 07:29 UTC | TSTM WND GST 64 | 5 Ene Edmunds | Stutsman, ND | RAWS Station ARROWWOOD 2. Time estimated by radar. |
| 07:35 UTC | TSTM WND GST 79 | 5 Ene Edmunds | Stutsman, ND | Arrowwood RAWS station. Time estimated from radar. |
| 07:37 UTC | TSTM WND GST 83 | 3 Wnw Kensal | Stutsman, ND | Measured wind gust at private weather station. |
| 07:40 UTC | TSTM WND GST 59 | 5 W Courtenay | Stutsman, ND | NDAWN Station Courtenay 5W. Report at 10 meters, 43 MPH observed at the surface. |
| 07:45 UTC | TSTM WND GST 77 | 5 W Courtenay | Stutsman, ND | NDAWN station Courtenay 5W. Report at 10 meters, 63 MPH observed at the surface. |
| 07:55 UTC | TSTM WND GST 63 | 1 Ene Glenfield | Foster, ND | Glenfield NDDOT site. Time estimated from radar. |
| 07:55 UTC | TSTM WND GST 51 | 11 Ssw Hamar | Eddy, ND | Corrects previous non-tstm wnd gst report from 11 SSW Hamar. Mesonet station 325749 McHenry ND NDAWN. |
| 07:55 UTC | NON-TSTM WND GST 51 | 11 Ssw Hamar | Eddy, ND | Mesonet station 325749 McHenry ND NDAWN. |
| 08:04 UTC | TORNADO | 3 Ene Revere | Griggs, ND | This EF1 tornado move northeast across a wheat field and then destroyed a pole barn during its roughly 1 mile long path. Time from barn video. |
| 08:15 UTC | TSTM WND GST 53 | 2 W Cooperstown | Griggs, ND | Corrects previous non-tstm wnd gst report from 2 W Cooperstown. Mesonet station 321766 Cooperstown ND NDAWN. |
| 08:15 UTC | NON-TSTM WND GST 53 | 2 W Cooperstown | Griggs, ND | Mesonet station 321766 Cooperstown ND NDAWN. |
| 08:33 UTC | TSTM WND DMG | Finley | Steele, ND | Damage to a shop from strong winds was reported. Time estimated via radar. |
| 08:50 UTC | TSTM WND GST 58 | 2 E Logan Center | Grand Forks, ND | Corrects previous non-tstm wnd gst report from 2 E Logan Center. Mesonet station 325332 Logan Center ND NDAWN. |
| 08:50 UTC | NON-TSTM WND GST 58 | 2 E Logan Center | Grand Forks, ND | Mesonet station 325332 Logan Center ND NDAWN. |
| 08:51 UTC | TSTM WND GST 61 | 2 E Logan Center | Grand Forks, ND | Report at 10 meters. 53 mph at the surface. |
| 08:56 UTC | TSTM WND GST 67 | 2 E Logan Center | Grand Forks, ND | Report at 10 meters. 58 mph at the surface. |
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 North DakotaEvery tornado in North Dakota since 1950Warnings in force in North Dakota nowThe forecast where you are
The other tornadoes of August 8, 2025
13 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| August 8 | 3:04 AM CDT | EF1 | Griggs, ND | 1.1 | 30 | |||
| August 8 | 3:47 AM CDT | EF0 | Grand Forks, ND | 2.1 | 20 | |||
| August 8 | 3:47 AM CDT | EF1 | Traill, ND | 3.9 | 100 | |||
| August 8 | 3:48 AM CDT | EF1 | Grand Forks, ND | 1.3 | 100 | |||
| August 8 | 3:48 AM CDT | EF1 | Grand Forks, ND | 3.0 | 75 | |||
| August 8 | 3:51 AM CDT | EF1 | Grand Forks, ND | 4.8 | 70 | |||
| August 8 | 3:54 AM CDT | EF1 | Grand Forks, ND | 2.0 | 30 | |||
| August 8 | 3:55 AM CDT | EF0 | Grand Forks, ND | 0.2 | 20 | |||
| August 8 | 3:57 AM CDT | EF0 | Grand Forks, ND | 0.2 | 20 | |||
| August 8 | 4:05 AM CDT | EF0 | Grand Forks, ND | 0.1 | 30 | |||
| August 8 | 4:12 AM CDT | EF1 | Grand Forks, ND to MN | 4.0 | 400 | |||
| August 8 | 4:12 AM CDT | EF1 | Grand Forks, ND to MN | 5.7 | 50 | |||
| August 8 | 5:41 PM EDT | EF0 | Hillsborough, FL | 0.0 | 10 |
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.