F1 tornado, Murrayville to Springfield, Illinois, March 12, 2006

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 mphthis tornado

   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.

Rating

F1

Date

March 12, 2006

Touchdown

7:58 PM CST (01:58 UTC)

Path length

12.0 miles (19.3 km)

Path width

440 yards (402 m)

Deaths

0

Injuries

0

Counties

Morgan and Sangamon counties

Touchdown point

39.620, -90.050

Lift-off point

39.670, -89.850

Record number

108

Continuation of tornado from Scott county. The damage across Scott and Morgan counties consisted primarily of damage to trees, power poles, and outbuildings, as well as mainly minor damage to homes and businesses. No injuries or fatalities were reported. Total tornado path length 9.8 miles in WFO Central Illinois service area.

Continuation of tornado from Scott county. Tornado continued into Sangamon county.

A tornado touched down just northeast of Franklin. The tornado continued into Sangamon county.

Continuation of tornado from Morgan county. The total tornado path length was 12.0 miles. Damage with this tornado consisted of snapped power poles, as well as damage to farm buildings and trees. No injuries or fatalities were reported.

Continuation of Morgan county tornado. The total path length of the tornado was about 65.5 miles, including a 45.0 mile path across the WFO Central Illinois service area.Damage from the storm over Scott, Morgan and rural Sangamon counties consisted of the snapping of power poles and major tree damage, either ripped up or uprooted. Numerous farm buildings (both Morton type buildings and barns) were damaged or destroyed, as were numerous grain bins. One mobile home was destroyed.This long track tornado moved into the city of Springfield before dissipating. The tornado crossed Interstate 72 near mile marker 92, around 8:20 PM. It entered the city of Springfield near Cockrell Lane and Constitution Drive, tracking to the east-northeast around 50 mph. The tornado was about 300 yards wide, and produced F2 damage to several businesses from Constitution Drive, through Parkway Pointe, to Veterans Parkway and Lindbergh Blvd.The tornado widened to about 0.4 mile wide as it continued to track east-northeast south of Wabash Avenue, between Veterans Parkway and Chatham Road. The tornado widened further, to just over 1/2 mile wide from Westchester Blvd to the village of Jerome. The damage was rated as F2 along Wabash Avenue, between Chatham Road and MacArthur Blvd.The tornado then weakened slightly, producing F1 damage, as it turned to the northeast, nearly parallel with the Norfolk Southern Railroad tracks. The damage path remained nearly 1/2 mile wide. The width of the tornado decreased to about 1/4 mile wide as it strengthened again, and turned to the north-northeast near Iles Park and in the vicinity of Oak and Myrtle Streets, between 6th and 9th Streets. The damage was rated as F2 in these locations, with roofs blown off of homes and businesses, and garages severely damaged. This tornado dissipated just north of 9th Street and South Grand Avenue.1 injury was reported in Morgan county, with 19 injuries reported in Sangamon county. No fatalities were reported.

The tornado touched down about 1/4 mile north of the Bunn Park golf course, and tracked to the northeast. The strongest damage was bounded by 15th Street, Cornell Avenue, South Grand Avenue, and Pope Avenue. Several homes had roofs torn off, with extensive damage to power poles and lines, along with numerous downed trees. The tornado continued to track northeast across Old Rochester Road, Singer Avenue, and Cook Street from White City Blvd. to a block east of Dirksen Parkway. The tornado crossed I-55 at the Clear Lake Avenue interchange, and overturned a semi truck. This tornado dissipated near Old Route 36, about 3/4 mile southwest of the Village of Clear Lake.No injuries or fatalities were reported.

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

15 minutes of warning. NWS ILX issued a tornado warning for this county at 01:43 UTC, 15 minutes before the tornado touched down, in force until 02:11 UTC.

The county was under a tornado watch, issued at 17:50 UTC and running to 03:54 UTC.

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 Storm Prediction Center had this point in a High Risk, with a 0.30 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 01:01 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 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.

Jacksonville (IJX), 29 km from the path, in the two hours either side.

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

The Lincoln radar (KILX), 77 km away, was scanning. The volume nearest the touchdown began at 01:59 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.

Local storm reports within 60 km of the path, in the three hours either side.

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

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

54 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.