Tornadoes · United States · Minnesota · 2024

EF0 tornado, Miesville to Martell, Minnesota, August 29, 2024

From Miesville to Martell, this EF0 tornado ran 7.9 miles across Dakota, Goodhue and Pierce counties on August 29, 2024, touching down at 5:46 PM CDT and reaching 50 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 29, 2024
Touchdown
5:46 PM CDT (22:46 UTC)
Lifted
5:57 PM CDT (22:57 UTC)
On the ground
11 minutes
Path length
7.9 miles (12.8 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Counties
Dakota, Goodhue and Pierce counties
Touchdown point
44.644, -92.838
Lift-off point
44.714, -92.711
Record number
2408291646-01

The damage survey

16 damage points were recorded along this path by NWS MPX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 90 mph.

  • Concentrated damage, trees pointing northwest.
  • Sporadic tree damage. Tornado ending point.
  • Narrow path of tree damage. Large branches broken.
  • Beginning of the tornado. Several trees uprooted at Bellwood Oaks Golf Course.

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 well-defined cold front associated with a strong upper-level low produced widespread wind damage and a few tornadoes throughout central and eastern Minnesota and western Wisconsin on August 29th, 2024. Four tornadoes occurred. There were also a number of downbursts, with some of the most significant downburst damage in Champlin, Anoka, and Cottage Grove.

A well-defined cold front associated with a strong upper level low produced widespread wind damage in western Wisconsin, as well as three tornadoes in Pierce and St Croix Counties on August 29th, 2024.

A tornado developed at the southern edge of Bellwood Oaks Golf Course, uprooting several trees, then continued northeast. A narrow path of sporadic tree damage occurred along the track, with the last damage in Minnesota being on Blackbird Trail in Dakota County. The tornado tracked across a sliver of northern Goodhue County before crossing the Mississippi River into Wisconsin, dissipating about 5 miles southeast of Prescott in Pierce County.

A tornado developed at the southern edge of Bellwood Oaks Golf Course, in Dakota County. It moved northeast and tracked across a sliver of northern Goodhue County before crossing the Mississippi River into Wisconsin, dissipating about 5 miles southeast of Prescott in Pierce County.

A tornado developed at the southern edge of Bellwood Oaks Golf Course, in Dakota County. It moved northeast and tracked across a sliver of northern Goodhue County before crossing the Mississippi River into Wisconsin, about 5 miles southeast of Prescott. Several dozen trees were broken or uprooted and a trailer was flipped.

The tornado damaged a couple hundred trees along a sporadic path. It also hit a house, removing part of its roof with pole barn type construction, and one wall collapsed.

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 19:34 UTC and running to 23:51 UTC.

Issued (UTC)ExpiredProductOffice
19:34 UTC23:51 UTCSevere Thunderstorm WatchMPX
20:42 UTC21:30 UTCSevere Thunderstorm WarningMPX
21:18 UTC22:15 UTCSevere Thunderstorm WarningMPX

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 Enhanced Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:54 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.

Minneapolis, MN (KMPX), 12:00Z

10.8 hours before the tornado, 68 km from the path. August 29, 2024.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2024-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 832 joules per kilogram, CIN -148, lifted condensation level 584 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, Minneapolis, MN at 12:00Z on 2024-08-29The 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 242 square meters per square second, 0 to 6 km bulk shear 28 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
832 J/kg
Mixed-layer CIN
-148 J/kg
Surface CAPE
20 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
296 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.9
0-3 km lapse rate
4.0 K/km

Open this sounding in Storm Lab

Minneapolis, MN (KMPX), 00:00Z

1.2 hours after it, 68 km from the path. August 30, 2024.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2024-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 24 joules per kilogram, CIN -144, lifted condensation level 907 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, Minneapolis, MN at 00:00Z on 2024-08-30The 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 129 square meters per square second, 0 to 6 km bulk shear 40 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
24 J/kg
Mixed-layer CIN
-144 J/kg
Surface CAPE
48 J/kg
Mixed-layer LCL
907 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

The radar

The Minneapolis radar (KMPX), 65 km away, was scanning. The volume nearest the touchdown began at 22:47 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
21:29 UTCTSTM WND DMG1 S HopkinsHennepin, MNPhoto of large tree down measuring 22 inches in diameter. Time estimated via radar.
21:56 UTCTSTM WND DMG3 E EaganDakota, MNPhoto of significant tree damage sent via Twitter.
21:56 UTCTSTM WND DMG3 Se EaganDakota, MNPhoto report via X. Maple tree snapped near base. Time estimated from radar.
21:56 UTCTSTM WND DMGEaganDakota, MNPhoto report via X. Large tree snapped at base. Time estimated from radar.
22:10 UTCTSTM WND DMG1 Nnw FaribaultRice, MNMultiple large trees downed with some landing on power lines, resulting in power outages across north Faribault.
22:30 UTCTSTM WND DMG1 W Cottage GroveWashington, MNDamage to shed along with multiple trees blown over and uprooted in the neighborhood. Time provided by caller.
22:46 UTCTSTM WND DMG3 Nnw MiesvilleDakota, MNSnapped mature trees at Golf Course. Photos sent via email.
22:47 UTCTORNADO3 Nnw MiesvilleDakota, MNA damage survey confirmed a tornado southwest of Ravenna MN.
23:09 UTCTSTM WND DMG5 Se River FallsPierce, WIDelayed report, time estimated from radar. Tree uprooted.
23:10 UTCTORNADO4 Se River FallsPierce, WIMultiple reports of brief tornado touching down south of River Falls that has now lifted or become rain wrapped.
23:13 UTCTSTM WND DMG3 Nnw EllsworthPierce, WIPhotos provided via social media of several trees down in the town of Beldenville. Time estimated via radar. Time estimated via radar.
23:13 UTCTORNADO8 Nw El PasoPierce, WICounty dispatch reported numerous trees and power lines down between River Falls and Spring Valley along Hwy 29 between Co Rd W and 650th St. Time estimated via radar.
23:15 UTCTSTM WND DMG3 Se WoodvilleSt. Croix, WIDelayed report of several large trees snapped and uprooted along CR NN near Wilson. Time estimated from radar.
23:30 UTCTSTM WND DMG4 N Spring ValleySt. Croix, WIReported via X. Lots of tree damage along CR-nn especially near house #435 both N and S.
23:36 UTCTSTM WND DMG2 S WilsonSt. Croix, WILarge tree down blocking road just south of I-94 near Wilson. Time estimated from radar.
23:37 UTCTSTM WND DMG2 Ssw WilsonSt. Croix, WI2 semi-trailers detached and flipped at truck stop by Kwik Trip. Reported via phone. Time estimated via radar.
23:37 UTCTORNADO2 Sw WilsonSt. Croix, WILaw enforcement reported numerous trees downed in several directions, and a street sign snapped in half near exit 28 along I-94.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2024 tornado in MinnesotaEvery tornado in Minnesota since 1950Warnings in force in Minnesota nowThe forecast where you are

The other tornadoes of August 29, 2024

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 293:05 PM CDTUnratedDickinson, IA0.825
August 294:17 PM EDTEF1Blair, PA0.8100$8,000
August 293:35 PM CDTEF1Morrison, MN7.550
August 294:26 PM CDTEF1Anoka, MN3.6250
August 294:32 PM CDTEF1Anoka, MN9.6250
August 296:06 PM CDTEF0Pierce, WI6.750
August 296:30 PM CDTEF0Saint Croix, WI1.750

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.