Tornadoes · United States · Minnesota · 2000

F2 tornado, Verndale to Staples, Minnesota, July 8, 2000

From Verndale to Staples, this F2 tornado ran 10.0 miles across Wadena and Todd counties on July 8, 2000, touching down at 9:20 PM CDT and reaching 60 yards wide. It killed nobody and injured 3, and did $500,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. F040 to 72 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mphthis tornado

    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. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5261 to 318 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
F2
Date
July 8, 2000
Touchdown
9:20 PM CDT (02:20 UTC)
Path length
10.0 miles (16.1 km)
Path width
60 yards (55 m)
Deaths
0
Injuries
3
Property damage
$500,000
Counties
Wadena and Todd counties
Touchdown point
46.400, -95.020
Lift-off point
46.350, -94.780
Record number
361

What the Weather Service recorded

A tornado that formed near Verndale intensified as it reached the Aldrich area. A mobile home, garage, barn, and 3 vehicles were destroyed 3 miles east of Aldrich. Two people, inside the mobile home when the tornado hit, suffered cuts, bruises, and a sprained ankle. The couples' son, sitting inside a car parked outside the mobile home, also sustained cuts and bruises. A horse trailer was pushed into his car and then into some nearby trees. Quite a bit of tree damage occurred along the damage path. The tornado then passed out of Wadena county and into Todd county.

Roofs blown off homes and one business. At least one dozen homes damaged. Numerous large trees down. One minor injury in Staples due to flying glass. Tornado crossed over from Wadena county.

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

The warnings

4 minutes of warning. NWS FGF issued a tornado warning for this county at 02:16 UTC, 4 minutes before the tornado touched down, in force until 02:45 UTC.

Issued (UTC)ExpiredProductOffice
01:44 UTC02:15 UTCSevere Thunderstorm WarningFGF
02:16 UTC02:45 UTCTornado WarningFGF
02:49 UTC07:00 UTCFlash Flood 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 01:12 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), 00:00Z

2.3 hours before the tornado, 197 km from the path. July 9, 2000.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2000-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 3971 joules per kilogram, CIN -17, lifted condensation level 1312 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 2000-07-09The 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 126 square meters per square second, 0 to 6 km bulk shear 30 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
3971 J/kg
Mixed-layer CIN
-17 J/kg
Surface CAPE
7291 J/kg
Mixed-layer LCL
1312 m above ground
0-6 km bulk shear
30 kt
0-1 km bulk shear
20 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
1.5
Supercell composite
17.7
0-3 km lapse rate
7.3 K/km

Open this sounding in Storm Lab

Minneapolis, MN (KMPX), 12:00Z

9.7 hours after it, 197 km from the path. July 9, 2000.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2000-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 174 joules per kilogram, CIN -341, lifted condensation level 1240 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 2000-07-09The 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 49 square meters per square second, 0 to 6 km bulk shear 41 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
174 J/kg
Mixed-layer CIN
-341 J/kg
Surface CAPE
409 J/kg
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
41 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1
0-3 km lapse rate
4.1 K/km

Open this sounding in Storm Lab

The surface observations

Staples (SAZ), 7 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
00:34 UTC82.480.650° 4 kt1009.5
00:54 UTC80.680.650° 5 kt1009.1
01:16 UTC80.680.660° 6 kt1008.5
01:36 UTC80.680.660° 5 kt1008.1VCTS
01:54 UTC78.878.870° 7 kt1008.8TS
02:15 UTC78.878.860° 4 kt1008.8TS
02:37 UTC73.473.4280° 23 kt321010.5+TSRA
02:55 UTC69.869.8130° 8 kt1010.2+TSRA
03:35 UTC69.869.810° 4 kt1008.5TSRA
04:17 UTC69.869.8200° 7 kt1008.5TSRA

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

This ground now

The live radar over the trackEvery 2000 tornado in MinnesotaEvery tornado in Minnesota since 1950Warnings in force in Minnesota nowThe forecast where you are

The other tornadoes of July 8, 2000

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 86:35 PM CDTF0Burnett, WI0.620
July 86:25 PM MDTF0Fergus, MT2.020

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.