Tornadoes · United States · Illinois · 2006

F0 tornado, Champaign to Flatville, Illinois, April 2, 2006

From Champaign to Flatville, this F0 tornado ran 0.3 miles across Champaign County on April 2, 2006, touching down at 7:25 PM CDT and reaching 50 yards wide. It killed nobody.

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 mphthis tornado

    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 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. 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
F0
Date
April 2, 2006
Touchdown
7:25 PM CDT (00:25 UTC)
Path length
0.3 miles (0.5 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Champaign County
Touchdown point
40.230, -88.050
Lift-off point
40.230, -88.050
Record number
264

What the Weather Service recorded

The tornado briefly touched down. No damage was reported.

The tornado briefly touched down causing minor structural damage.

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

The warnings

32 minutes of warning. NWS ILX issued a tornado warning for this county at 23:53 UTC, 32 minutes before the tornado touched down, in force until 00:34 UTC.

The county was under a tornado watch, issued at 22:45 UTC and running to 02:11 UTC.

Issued (UTC)ExpiredProductOffice
22:45 UTC02:11 UTCTornado WatchILX
23:53 UTC00:34 UTCTornado WarningILX
00:16 UTC00:48 UTCTornado WarningILX
11:00 UTC20:00 UTCWind AdvisoryILX

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, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:55 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.

Lincoln, IL (KILX), 00:00Z

0.4 hours before the tornado, 48 km from the path. April 3, 2006.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2006-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1184 joules per kilogram, CIN -39, lifted condensation level 746 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 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, Lincoln, IL at 00:00Z on 2006-04-03The 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 253 square meters per square second, 0 to 6 km bulk shear 36 knots.193958Sfc1 km3 km6 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
1184 J/kg
Mixed-layer CIN
-39 J/kg
Surface CAPE
1184 J/kg
Mixed-layer LCL
746 m above ground
0-6 km bulk shear
36 kt
0-1 km bulk shear
27 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
1.1
Supercell composite
4.9
0-3 km lapse rate
5.9 K/km

Open this sounding in Storm Lab

Lincoln, IL (KILX), 12:00Z

11.6 hours after it, 48 km from the path. April 3, 2006.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2006-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2 joules per kilogram, CIN 0, lifted condensation level 512 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2006-04-03The 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 122 square meters per square second, 0 to 6 km bulk shear 27 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
2 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
11 J/kg
Mixed-layer LCL
512 m above ground
0-6 km bulk shear
27 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

The surface observations

Rantoul (TIP), 11 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
22:25 UTC60.860.8160° 11 kt1002.7
22:45 UTC62.660.8150° 14 kt1001.4
23:05 UTC62.660.8160° 14 kt181001
23:25 UTC62.660.8150° 13 kt1001
23:45 UTC60.860.8160° 15 kt1001.7
00:05 UTC60.860.8150° 12 kt1001
00:25 UTC60.860.8140° 12 kt1000.3-TSRA
00:45 UTC53.651.8250° 20 kt411003.4-TSRA
01:05 UTC53.653.6260° 22 kt311002.7TSRA
01:25 UTC53.653.6250° 17 kt241002.7-TSRA
01:45 UTC53.653.6270° 10 kt1001-RA
02:05 UTC53.651.8220° 6 kt1001-RA

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

The radar

The Lincoln radar (KILX), 110 km away, was scanning. The volume nearest the touchdown began at 00:25 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
23:55 UTCTSTM WND DMGBementPiatt, IL10 POWER POLES DOWN. TREE LIMBS DOWN.
23:55 UTCTSTM WND DMGBementPiatt, ILPOWER POLES DOWN.
23:58 UTCTSTM WND DMGGarrettDouglas, IL1 TREE DOWN, STORAGE SHED GONE, MACHINE SHED ROOF GONE, DAMAGE TO HOME AND GARAGE.
00:01 UTCTORNADO 02 Nne WeldonDe Witt, ILNO DAMAGE.
00:05 UTCTSTM WND DMG1 E CamargoDouglas, ILHUGE TREE SNAPPED, POWER POLES SNAPPED, METAL SHED BLOWN OVER.
00:07 UTCTORNADO1 N SadorusChampaign, ILTORNADO 1 MILE NORTH OF SADORUS REPORTED BY THE EOC
00:09 UTCTSTM WND DMGMansfieldPiatt, ILPOWER LINES DOWN ACROSS US-150 WEST OF TOWN.
00:09 UTCTORNADOLodgePiatt, ILTORNADO ON GROUND.
00:10 UTCTSTM WND DMGLake of The WoodsChampaign, ILSIDING DAMAGED ON A BUILDING. TREE LIMBS ON TOP OF HOUSE. GARAGE DOOR PULLED OUT. SHED LOST PART OF ITS ROOF.
00:10 UTCTSTM WND DMGMahometChampaign, ILTREE FELL ON A HOUSE. OTHER TREES DAMAGED IN TOWN.
00:10 UTCTSTM WND DMGRantoulChampaign, ILROOF AND BROKEN WINDOWS AT REC BUILDING.
00:10 UTCHAIL 0.75ChampaignChampaign, ILJUST NORTHWEST OF I-57/SPRINGFIELD AVE INTERSECTION
00:11 UTCTSTM WND DMGChampaignChampaign, ILSIDING RIPPED OFF A MOBILE HOME.
00:12 UTCTSTM WND DMGChampaignChampaign, ILROOFS OF COUNTY BUILDINGS DAMAGED. MANY TREES AND POWER LINES DOWN.
00:12 UTCTSTM WND GST 80ChampaignChampaign, ILMEASURED 70 TO 80 MPH WINDS IN CHAMPAIGN.
00:14 UTCTSTM WND DMGPesotumChampaign, ILVEHICLE BLOWN OFF THE ROAD. TREES AND POWER LINES DOWN.
00:14 UTCTSTM WND DMGSavoyChampaign, ILPIECES OF COLLEGE PARK APTS BLOWN OFF.
00:14 UTCTSTM WND GST 634 W ChampaignChampaign, IL
00:14 UTCTSTM WND GST 74ChampaignChampaign, IL
00:14 UTCTSTM WND GST 74(Cmi)Champaign ArptChampaign, IL
00:15 UTCTORNADO 02 E ChampaignChampaign, ILBRIEF TOUCHDOWN ON OAK STREET, WEST OF ASSEMBLY HALL, SOUTH OF KIRBY AVE. NO DAMAGE. REPORTED BY UNIVERSITY POLICE DEPT.
00:15 UTCTORNADO 0UrbanaChampaign, ILBRIEF TOUCHDOWN ON OAK STREET, WEST OF ASSEMBLY HALL, SOUTH OF KIRBY AVE. NO DAMAGE. REPORTED BY UNIVERSITY POLICE DEPT.
00:20 UTCTSTM WND DMG5 Sw ArrowsmithMclean, ILBARNS BLOWN DOWN OR DAMAGED.
00:20 UTCHAIL 0.75SidneyChampaign, ILTIME ESTIMATED.
00:21 UTCTSTM WND DMG3 Ne MahometChampaign, IL30 FOOT TALL, 18 INCH DIAMETER TREE DOWN.
00:21 UTCTSTM WND DMG4 S ArrowsmithMclean, ILTWO BARNS AND TWO SILOS DAMAGED. POWER LINES DOWN. MACHINE SHED DOORS BLOWN OFF.
00:21 UTCTSTM WND GST 583 Ne MahometChampaign, IL
00:23 UTCTSTM WND GST 702 Wnw ChampaignChampaign, ILI-74 AT I-57. FUNNEL CLOUD SPOTTED.
00:24 UTCTSTM WND GST 69ThomasboroChampaign, IL
00:25 UTCTSTM WND DMGSt. JosephChampaign, IL7 HOMES DAMAGEDE IN WILSHIRE SUBDIVISION. 5 OTHER HOMES IN RURAL AREAS DAMAGED.
00:25 UTCTORNADO 05 Ssw GiffordChampaign, ILLOCATED NEAR FLATVILLE. PATH LENGTH 1/4 MILE, WIDTH 50 YARDS. CAUSED MINOR STRUCTURE DAMAGE.
00:30 UTCTSTM WND DMG3 E OgdenVermilion, ILSEMI BLOWN OVER ON I-74 AT MILE MARKER 200
00:30 UTCTSTM WND DMGUrbanaChampaign, ILBILLBOARD BLOWN OVER, 2 MILES EAST OF UNIVERSITY AND HIGHCROSS.
00:30 UTCTSTM WND GST 57BroctonEdgar, IL
00:30 UTCTSTM WND GST 58OgdenChampaign, ILSWOP REPORT.
00:30 UTCTORNADO3 Sw SaybrookMclean, ILTORNADO DAMAGE REPORTED BY COUNTY ESDA.
00:35 UTCTSTM WND DMG4 N OakwoodVermilion, ILWIND DAMAGE TO BARNS AND A GRADE SCHOOL.
00:39 UTCTSTM WND DMGBismarckVermilion, ILTREES DOWN.
00:39 UTCTSTM WND DMGCatlinVermilion, IL7 POWER LINES DOWN, POLES WERE BROKEN IN HALF. TRAIN CARS BLOWN OVER.
00:40 UTCTSTM WND DMGDanvilleVermilion, ILSEMI BLOWN OVER ON I 74 AND A TREE DOWN IN TOWN.

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

This ground now

The live radar over the trackEvery 2006 tornado in IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are

The other tornadoes of April 2, 2006

66 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 23:47 PM CDTF0Davis, IA0.230
April 23:57 PM CDTF0Davis, IA0.125
April 24:03 PM CDTF2Van Buren, IA3.0100$30,000
April 24:15 PM CDTF1Van Buren, IA2.050$10,000
April 24:18 PM CDTF1Jefferson, IA0.350$10,000
April 24:19 PM CDTF1Van Buren, IA3.050$10,000
April 24:25 PM CDTF2Ralls, MO3.5350
April 24:46 PM CDTF2Washington, IA1.075$30,000
April 24:59 PM CDTF1Sharp, AR9.5100$100,000
April 25:00 PM CDTF0Saint Francois, MO0.150
April 25:00 PM CDTF1Washington, IA0.150$10,000
April 25:05 PM CDTF0Sainte Genevieve, MO2.040
April 25:06 PM CDTF0Warren, IA0.230
April 25:15 PM CDTF2Saint Clair, IL7.0100111
April 25:15 PM CDTF0Macoupin, IL2.030
April 25:15 PM CDTF0Macoupin, IL0.530
April 25:16 PM CDTF0Henderson, IL0.025
April 25:20 PM CDTF1McDonough, IL12.0233$150,000
April 25:21 PM CDTF0Madison, IL16.050
April 25:30 PM CDTF1Madison, IL2.0100
April 25:31 PM CDTF0Polk, IA0.230
April 25:35 PM CDTF0Macoupin, IL0.120
April 25:37 PM CDTF3Randolph, AR to MO77.08802177$86 million
April 25:41 PM CDTF0Montgomery, IL1.050
April 25:46 PM CDTF1Sangamon, IL0.5200
April 25:49 PM CDTF1Sangamon, IL2.0100
April 25:50 PM CDTF2Montgomery, IL20.0200
April 25:56 PM CDTF1Sangamon, IL1.0100
April 25:56 PM CDTF1Montgomery, IL2.2100
April 25:58 PM CDTF1Sangamon, IL1.0100
April 25:59 PM CDTF0Sangamon, IL1.350
April 26:00 PM CDTF2White, AR6.3100
April 26:06 PM CDTF1Sangamon, IL0.850
April 26:08 PM CDTF1Christian, IL6.33001
April 26:13 PM CDTF1Sangamon, IL1.51001
April 26:14 PM CDTF1Christian, IL6.0150
April 26:17 PM CDTF0Christian, IL0.150
April 26:20 PM CDTF1Christian, IL1.0100
April 26:22 PM CDTF0Menard, IL0.340
April 26:29 PM CDTF3Woodruff, AR38.05005$5.0 million
April 26:30 PM CDTF0Macon, IL0.130
April 26:30 PM CDTF2Macon, IL4.5300
April 26:32 PM CDTF0Logan, IL1.080
April 26:36 PM CDTF0Logan, IL2.550
April 26:36 PM CDTF1Macon, IL7.51503
April 26:42 PM CDTF0Cumberland, IL0.8100
April 26:43 PM CDTF0Scott, MO1.550$20,000
April 27:01 PM CDTF0DeWitt, IL0.130
April 27:08 PM CDTF0McLean, IL0.130
April 27:12 PM CDTF0McLean, IL0.550
April 27:13 PM CDTF1McLean, IL1.050
April 27:15 PM CDTF0Champaign, IL0.130
April 27:22 PM CDTF0McLean, IL2.650
April 27:31 PM CDTF0Ballard, KY0.130
April 27:32 PM CDTF3Dyer, TN18.08801670$20 million
April 29:07 PM EDTF1Lawrence, IN0.5100$100,000
April 28:09 PM CDTF3Gibson, TN31.0880644$27 million
April 29:25 PM EDTF1Tippecanoe, IN0.5100$50,000
April 29:37 PM EDTF1Jackson, IN0.5100$200,000
April 28:43 PM CDTF3Gibson, TN8.088026$15 million

All 67 of them

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.