EF1 tornado, Luray, Missouri, April 25, 2012

1. EF065 to 85 mph

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

2. EF186 to 110 mphthis tornado

   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.

Rating

EF1

Date

April 25, 2012

Touchdown

8:05 PM CDT (01:05 UTC)

Lifted

8:10 PM CDT (01:10 UTC)

On the ground

5 minutes

Path length

2.0 miles (3.2 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

County

Clark County

Touchdown point

40.450, -91.842

Lift-off point

40.409, -91.826

Record number

1204251905-01

Low pressure tracked across eastern Iowa and northwest Illinois during the evening hours of April 25, 2012. A warm front also moved north into the area triggering severe thunderstorms across extreme southeast Iowa and extreme northeast Missouri. These storms dumped large hail in extreme southeast Iowa and even produced a tornado in extreme northeast Missouri. In Clark county, Missouri a supercell produced an EF1 tornado that touched down 2 miles east of Luray and moved southeast to about 4 miles southeast of Luray. This tornado damaged grain bins, barns and other outbuildings. A house at the beginning of the tornado's path was extensively damaged and was shifted off its foundation. Another house at the end of the path had the siding and roof damaged. The tornado moved southeast for about 2 miles and was on the ground for an estimated 5 minutes. No injuries were reported. Golf ball size hail fell in Kahoka, Missouri causing damage to vehicles.

A supercell produced an EF1 tornado that touched down 2 miles east of Luray and moved southeast to about 4 miles southeast of Luray, damaging grain bins, barns and other outbuildings. A house at the beginning of the tornado's path was extensively damaged and was shifted off its foundation. Another house at the end of the path had the siding and roof damaged. The tornado moved southeast for about 2 miles and was on the ground for an estimated 5 minutes.

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

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 00:47 UTC and running to 02:48 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 Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 01:02 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.

The Quad Cities radar (KDVN), 168 km away, was scanning. The volume nearest the touchdown began at 01:05 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 2012 tornado in MissouriEvery tornado in Missouri since 1950Warnings in force in Missouri nowThe forecast where you are

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.