Tornadoes · United States · Missouri · 2003
F2 tornado, Baring, Missouri, May 10, 2003
This F2 tornado ran 22.1 miles across Knox, Scotland and Clark counties on May 10, 2003, touching down at 5:33 PM CDT and reaching 200 yards wide. It killed nobody, 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.
F040 to 72 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F173 to 112 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
F4207 to 260 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- May 10, 2003
- Touchdown
- 5:33 PM CDT (22:33 UTC)
- Path length
- 22.1 miles (35.6 km)
- Path width
- 200 yards (183 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $500,000
- Counties
- Knox, Scotland and Clark counties
- Touchdown point
- 40.220, -92.200
- Lift-off point
- 40.420, -91.770
- Record number
- 275
What the Weather Service recorded
A damage survey completed by National Weather Service personnel of Knox County Missouri revealed a 7 mile long tornado path just north of Edina northeast to the Knox Scotland County line. The tornado first started about 4 miles north of Edina along Highway EE. Three power poles were snapped off and a couple of trees damaged. The tornado strengthened as it moved northeast causing damage along County Road 44, Highway K, and County Road 48. Numerous trees were mangled, farm outbuildings destroyed and power lines downed. A home along County Road 48 suffered major damage losing its roof and one wall. The damage at this point was rated F2, the strongest along the tornado path. The width of the damage at this point was about 200 yards wide. The damage path continued northeast downing trees and power lines. It crossed Highway V just west of County Road 76. Along Highway V, 2 grains bins were destroyed , an old abandoned house was destroyed, and a home lost its garage and part of the roof. The tornado continued northeast and crossed into Scotland County near the North Fabius River.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
39 minutes of warning. NWS LSX issued a tornado warning for this county at 21:54 UTC, 39 minutes before the tornado touched down, in force until 22:45 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 21:54 UTC | 22:45 UTC | Tornado Warning | LSX |
| 22:44 UTC | 23:15 UTC | Tornado Warning | LSX |
| 00:23 UTC | 01:15 UTC | Severe Thunderstorm Warning | LSX |
| 00:29 UTC | 01:15 UTC | Tornado Warning | LSX |
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 High Risk, with a 0.25 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 12:05 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.
Davenport, (KDVN), 12:00Z
10.6 hours before the tornado, 191 km from the path. May 10, 2003.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -82973 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1102 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
- 0-3 km lapse rate
- 2.8 K/km
Davenport, (KDVN), 00:00Z
1.4 hours after it, 191 km from the path. May 11, 2003.
- Mixed-layer CAPE
- 1566 J/kg
- Mixed-layer CIN
- -80 J/kg
- Surface CAPE
- 1430 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 234 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 2.8
- Supercell composite
- 12.7
- 0-3 km lapse rate
- 6.5 K/km
The radar
The Quad Cities radar (KDVN), 186 km away, was scanning. The volume nearest the touchdown began at 22:30 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.
This ground now
The live radar over the trackEvery 2003 tornado in MissouriEvery tornado in Missouri since 1950Warnings in force in Missouri nowThe forecast where you are
The other tornadoes of May 10, 2003
50 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| May 10 | 3:00 AM CDT | F0 | Butler, KS | 4.0 | 110 | $10,000 | ||
| May 10 | 3:05 AM CDT | F0 | Marion, KS | 6.0 | 110 | $50,000 | ||
| May 10 | 7:53 AM CDT | F0 | Sangamon, IL | 0.1 | 10 | |||
| May 10 | 7:55 AM CDT | F0 | Sangamon, IL | 0.2 | 20 | |||
| May 10 | 7:58 AM CDT | F0 | Sangamon, IL | 1.0 | 30 | $40,000 | ||
| May 10 | 8:08 AM CDT | F0 | Christian, IL | 0.3 | 20 | |||
| May 10 | 9:45 AM CDT | F0 | Cumberland, IL | 0.1 | 10 | |||
| May 10 | 10:40 AM CDT | F0 | Edgar, IL | 0.1 | 10 | |||
| May 10 | 10:51 AM EST | F0 | Putnam, IN | 0.5 | 50 | $10,000 | ||
| May 10 | 11:00 AM CDT | F1 | Jasper, IL | 1.5 | 100 | $10,000 | ||
| May 10 | 4:45 PM EDT | F3 | Mason, KY | 25.0 | 200 | 17 | $5.5 million | |
| May 10 | 4:02 PM CDT | F0 | Linn, MO | 0.5 | 25 | |||
| May 10 | 4:38 PM CDT | F0 | Mercer, MO | 0.1 | 25 | $1,000 | ||
| May 10 | 4:56 PM CDT | F1 | Putnam, MO | 7.0 | 100 | $20,000 | ||
| May 10 | 5:23 PM CDT | F0 | Macon, MO | 5.5 | 50 | $1,000 | ||
| May 10 | 5:26 PM CDT | F1 | Marion, IA | 18.5 | 50 | $320,000 | ||
| May 10 | 5:35 PM CDT | F0 | Putnam, MO | 0.5 | 50 | $1,000 | ||
| May 10 | 5:50 PM CDT | F0 | Shelby, MO | 5.0 | 50 | |||
| May 10 | 6:08 PM CDT | F2 | Lewis, MO | 20.0 | 200 | 6 | $5.0 million | |
| May 10 | 6:10 PM CDT | F0 | Lewis, MO | 4.0 | 50 | |||
| May 10 | 6:19 PM CDT | F0 | Monroe, MO | 0.2 | 40 | |||
| May 10 | 6:27 PM CDT | F0 | Tama, IA | 0.1 | 25 | |||
| May 10 | 6:28 PM CDT | F2 | Lee, IA | 11.5 | 200 | $1.0 million | ||
| May 10 | 6:30 PM CDT | F0 | Marion, MO | 2.5 | 50 | |||
| May 10 | 6:36 PM CDT | F2 | Adams, IL | 69.2 | 300 | 4 | $1.1 million | |
| May 10 | 6:37 PM CDT | F3 | Marion, MO | 12.0 | 200 | |||
| May 10 | 7:10 PM CDT | F0 | Van Buren, IA | 4.0 | 100 | $100,000 | ||
| May 10 | 7:20 PM CDT | F2 | Adams, IL | 30.8 | 300 | |||
| May 10 | 7:23 PM CDT | F0 | Jefferson, IA | 5.0 | 100 | $100,000 | ||
| May 10 | 7:33 PM CDT | F0 | Jefferson, IA | 2.4 | 100 | $100,000 | ||
| May 10 | 7:44 PM CDT | F1 | Henry, IA | 27.9 | 200 | $2.0 million | ||
| May 10 | 8:14 PM CDT | F2 | Schuyler, IL | 6.0 | 150 | |||
| May 10 | 8:15 PM CDT | F1 | Lafayette, WI | 7.8 | 200 | 1 | $200,000 | |
| May 10 | 8:30 PM CDT | F0 | Mercer, IL | 8.3 | 100 | $100,000 | ||
| May 10 | 8:32 PM CDT | F1 | Fulton, IL | 3.0 | 400 | |||
| May 10 | 8:39 PM CDT | F1 | Iowa, WI | 8.6 | 200 | $300,000 | ||
| May 10 | 9:42 PM EDT | F0 | Beaufort, NC | 0.1 | 50 | |||
| May 10 | 8:45 PM CDT | F0 | Mercer, IL | 2.1 | 50 | $100,000 | ||
| May 10 | 8:47 PM CDT | F1 | Fulton, IL | 2.7 | 100 | |||
| May 10 | 8:55 PM CDT | F0 | Mercer, IL | 3.8 | 50 | $50,000 | ||
| May 10 | 8:55 PM CDT | F0 | Henry, IL | 25.5 | 100 | $650,000 | ||
| May 10 | 9:12 PM CDT | F1 | Mason, IL | 8.0 | 150 | |||
| May 10 | 9:33 PM CDT | F2 | Mason, IL | 2.5 | 100 | 1 | ||
| May 10 | 9:38 PM CDT | F1 | Mason, IL | 2.0 | 100 | |||
| May 10 | 9:45 PM CDT | F3 | Tazewell, IL | 17.5 | 440 | 32 | $10 million | |
| May 10 | 9:58 PM CDT | F0 | Bureau, IL | 4.1 | 50 | $50,000 | ||
| May 10 | 10:16 PM CDT | F1 | Tazewell, IL | 1.5 | 100 | |||
| May 10 | 10:18 PM CDT | F2 | Woodford, IL | 12.5 | 300 | 4 | ||
| May 10 | 10:25 PM CDT | F1 | Woodford, IL | 8.0 | 200 | |||
| May 10 | 10:35 PM CDT | F1 | Jackson, AR | 0.6 | 30 |
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.