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.

  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.

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)ExpiredProductOffice
04:57 UTC09:54 UTCSevere Thunderstorm WatchFGF
07:41 UTC08:45 UTCSevere Thunderstorm WarningFGF
07:52 UTC08:15 UTCTornado WarningFGF
08:10 UTC08:30 UTCTornado WarningFGF
08:16 UTC08:45 UTCSevere Thunderstorm WarningFGF
08:23 UTC08:35 UTCSevere Thunderstorm WarningFGF
08:34 UTC09:30 UTCSevere Thunderstorm WarningFGF

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.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2025-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2718 joules per kilogram, CIN -56, lifted condensation level 1242 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2025-08-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 58 square meters per square second, 0 to 6 km bulk shear 43 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
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

Open this sounding in Storm Lab

Bismarck Municip, ND (KBIS), 12:00Z

3.9 hours after it, 199 km from the path. August 8, 2025.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2025-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -7585, lifted condensation level 1417 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2025-08-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -237 square meters per square second, 0 to 6 km bulk shear 34 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
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

Open this sounding in Storm Lab

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)ReportWhereCountyRemark
07:29 UTCTSTM WND GST 645 Ene EdmundsStutsman, NDRAWS Station ARROWWOOD 2. Time estimated by radar.
07:35 UTCTSTM WND GST 795 Ene EdmundsStutsman, NDArrowwood RAWS station. Time estimated from radar.
07:37 UTCTSTM WND GST 833 Wnw KensalStutsman, NDMeasured wind gust at private weather station.
07:40 UTCTSTM WND GST 595 W CourtenayStutsman, NDNDAWN Station Courtenay 5W. Report at 10 meters, 43 MPH observed at the surface.
07:45 UTCTSTM WND GST 775 W CourtenayStutsman, NDNDAWN station Courtenay 5W. Report at 10 meters, 63 MPH observed at the surface.
07:55 UTCTSTM WND GST 631 Ene GlenfieldFoster, NDGlenfield NDDOT site. Time estimated from radar.
07:55 UTCTSTM WND GST 5111 Ssw HamarEddy, NDCorrects previous non-tstm wnd gst report from 11 SSW Hamar. Mesonet station 325749 McHenry ND NDAWN.
07:55 UTCNON-TSTM WND GST 5111 Ssw HamarEddy, NDMesonet station 325749 McHenry ND NDAWN.
08:04 UTCTORNADO3 Ene RevereGriggs, NDThis 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 UTCTSTM WND GST 532 W CooperstownGriggs, NDCorrects previous non-tstm wnd gst report from 2 W Cooperstown. Mesonet station 321766 Cooperstown ND NDAWN.
08:15 UTCNON-TSTM WND GST 532 W CooperstownGriggs, NDMesonet station 321766 Cooperstown ND NDAWN.
08:33 UTCTSTM WND DMGFinleySteele, NDDamage to a shop from strong winds was reported. Time estimated via radar.
08:50 UTCTSTM WND GST 582 E Logan CenterGrand Forks, NDCorrects previous non-tstm wnd gst report from 2 E Logan Center. Mesonet station 325332 Logan Center ND NDAWN.
08:50 UTCNON-TSTM WND GST 582 E Logan CenterGrand Forks, NDMesonet station 325332 Logan Center ND NDAWN.
08:51 UTCTSTM WND GST 612 E Logan CenterGrand Forks, NDReport at 10 meters. 53 mph at the surface.
08:56 UTCTSTM WND GST 672 E Logan CenterGrand Forks, NDReport 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.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 83:04 AM CDTEF1Griggs, ND1.130
August 83:47 AM CDTEF0Grand Forks, ND2.120
August 83:47 AM CDTEF1Traill, ND3.9100
August 83:48 AM CDTEF1Grand Forks, ND1.3100
August 83:48 AM CDTEF1Grand Forks, ND3.075
August 83:51 AM CDTEF1Grand Forks, ND4.870
August 83:54 AM CDTEF1Grand Forks, ND2.030
August 83:55 AM CDTEF0Grand Forks, ND0.220
August 83:57 AM CDTEF0Grand Forks, ND0.220
August 84:05 AM CDTEF0Grand Forks, ND0.130
August 84:12 AM CDTEF1Grand Forks, ND to MN4.0400
August 84:12 AM CDTEF1Grand Forks, ND to MN5.750
August 85:41 PM EDTEF0Hillsborough, FL0.010

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.