Tornadoes · United States · Iowa · 2026

EF0 tornado, Lone Tree to West Liberty, Iowa, April 2, 2026

From Lone Tree to West Liberty, this EF0 tornado ran 2.2 miles across Johnson and Muscatine counties on April 2, 2026, touching down at 4:36 PM CDT and reaching 50 yards wide. It killed nobody.

Preliminary. This is NWS DVN's damage survey, filed in the Damage Assessment Toolkit as Downey. The rating, the path and the casualties are the survey's and can change while it is revised. The Storm Prediction Center compiles the official record of 2026 from these surveys and publishes it in the spring of 2027; this page moves to that tornado's permanent address when it does.

The rating scale

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

  1. EF065 to 85 mphthis tornado

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

  2. EF186 to 110 mph

    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.

The survey

Rating, as surveyed
EF0, preliminary
Date
April 2, 2026
Touchdown
4:36 PM CDT (21:36 UTC)
Lifted
4:39 PM CDT (21:39 UTC)
On the ground
3 minutes
Path length
2.2 miles (3.5 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Counties
Johnson and Muscatine counties
Touchdown point
41.582, -91.387
Lift-off point
41.596, -91.349
Highest wind the damage implies
80 mph
Surveyed by
NWS DVN
The office's name for it
Downey
Survey last edited
April 29, 2026
Record number
None yet. SPC numbers 2026 in the spring of 2027.

What the survey found

This tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding.

Written by NWS DVN in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.

What the Weather Service recorded

During the afternoon and evening of April 2nd, 2026, and early spring supercell thunderstorm event spread across eastern Iowa and northwest Illinois. This brought several swaths of damaging wind, large hail, and several tornadoes to both Iowa and Illinois.

An EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding. This tornado continued into Muscatine County, Iowa.

An EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding. This tornado began in Johnson County, Iowa.

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

The warnings

40 minutes of warning. NWS DVN issued a tornado warning for this county at 20:56 UTC, 40 minutes before the tornado touched down, in force until 21:45 UTC.

The county was under a tornado watch, issued at 18:44 UTC and running to 22:35 UTC.

Issued (UTC)ExpiredProductOffice
18:44 UTC22:35 UTCTornado WatchDVN
20:56 UTC21:45 UTCTornado WarningDVN
20:59 UTC22:00 UTCSevere Thunderstorm WarningDVN
21:27 UTC21:47 UTCTornado WarningDVN
21:56 UTC22:19 UTCSevere Thunderstorm WarningDVN

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 Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 19:56 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), 00:00Z

2.4 hours after it, 72 km from the path. April 3, 2026.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2026-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 21 joules per kilogram, CIN -76, lifted condensation level 1092 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, Davenport, at 00:00Z on 2026-04-03The 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 -14 square meters per square second, 0 to 6 km bulk shear 48 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
21 J/kg
Mixed-layer CIN
-76 J/kg
Surface CAPE
23 J/kg
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
48 kt
0-1 km bulk shear
36 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.7 K/km

Open this sounding in Storm Lab

The surface observations

Iowa City (IOW), 16 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
19:40 UTC 22 kt1000.7
19:45 UTC190° 14 kt191000.3
19:47 UTC69.862.6190° 16 kt281000.3
19:50 UTC190° 18 kt241000.3
19:52 UTC7062190° 18 kt251000.3
19:55 UTC190° 18 kt261000.3
20:00 UTC190° 15 kt1000.3
20:05 UTC190° 16 kt231000.3
20:10 UTC190° 16 kt231000
20:15 UTC200° 16 kt241000
20:20 UTC190° 17 kt231000
20:25 UTC180° 20 kt25999.7
20:30 UTC190° 15 kt999.7
20:35 UTC190° 16 kt24999.7
20:36 UTC7261190° 18 kt25999.7
20:40 UTC 26999.7
20:45 UTC200° 16 kt999.7
20:50 UTC190° 15 kt999.3
20:52 UTC7261190° 14 kt26999.3
20:55 UTC190° 13 kt999.3
21:00 UTC190° 13 kt19999.3
21:05 UTC190° 13 kt18999
21:10 UTC190° 13 kt18999
21:15 UTC190° 13 kt999
21:17 UTC7160200° 13 kt999TS
21:20 UTC190° 14 kt999RA
21:25 UTC190° 12 kt25999.3RA
21:30 UTC220° 14 kt26999.7+RA
21:32 UTC6760220° 22 kt33999.7+TSRA
21:35 UTC200° 16 kt1000.3+RA
21:38 UTC6358230° 14 kt331000.3+TSRA
21:40 UTC 26999.7+RA
21:45 UTC 20 kt321000.7+RA
21:50 UTC220° 17 kt301000.3+RA
21:52 UTC6156210° 16 kt33999.7+TSRA
21:55 UTC210° 17 kt22999.7+RA
21:58 UTC6156210° 20 kt31999.7-TSRA
22:00 UTC210° 17 kt22999.7-RA
22:00 UTC6156210° 17 kt27999.7-TSRA
22:05 UTC 1000-RA
22:07 UTC6156 1000-TSRA
22:10 UTC 1000-RA
22:15 UTC 1000
22:17 UTC6156 1000
22:20 UTC 1000
22:25 UTC 1000
22:30 UTC 1000
22:35 UTC 1000.3
22:40 UTC 1000.3
22:45 UTC 1000.3
22:50 UTC 1000.3
22:52 UTC6356 1000.3
22:55 UTC 1000.3
23:00 UTC 1000.3
23:05 UTC230° 14 kt1000.3
23:10 UTC230° 12 kt1000.7
23:15 UTC230° 12 kt171000.7
23:20 UTC230° 15 kt1001
23:25 UTC230° 14 kt1001
23:30 UTC240° 16 kt211001
23:35 UTC240° 13 kt181001

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

The radar

The Quad Cities radar (KDVN), 66 km away, was scanning. The volume nearest the touchdown began at 21:35 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
20:56 UTCTSTM WND GST 503 E KeotaWashington, IAMeasured with anemometer.
20:56 UTCTSTM WND GST 503 E KeotaWashington, IAMeasured with anemometer.
20:56 UTCTSTM WND GST 503 E KeotaWashington, IAMeasured with anemometer.
20:59 UTCTSTM WND GST 643 Nw ParnellIowa, IA
20:59 UTCTSTM WND GST 643 Nw ParnellIowa, IA
20:59 UTCTSTM WND GST 643 Nw ParnellIowa, IA
21:11 UTCTORNADO2 S RichmondWashington, IAThis tornado snapped/uprooted trees, bent power poles, and damaged several outbuildings along its path. The roofs on 1 machine shed and 3 hog confinement buildings were also destroyed.
21:11 UTCTORNADO2 S RichmondWashington, IAThis tornado snapped/uprooted trees, bent power poles, and damaged several outbuildings along its path. The roofs on 1 machine shed and 3 hog confinement buildings were also destroyed.
21:13 UTCHAIL 1.751 W KalonaWashington, IA
21:13 UTCHAIL 1.751 W KalonaWashington, IA
21:13 UTCHAIL 1.751 W KalonaWashington, IA
21:13 UTCHAIL 2.51 Nnw KalonaWashington, IADamage to two squad cars on Iowa Highway 1, including a cracked windshield on one. Hail size estimated by deputies. Time estimated using radar.
21:13 UTCHAIL 2.51 Nnw KalonaWashington, IADamage to two squad cars on Iowa Highway 1, including a cracked windshield on one. Hail size estimated by deputies. Time estimated using radar.
21:18 UTCFUNNEL CLOUD5 Nne West ChesterWashington, IAnear the ground with debris.
21:18 UTCFUNNEL CLOUD5 Nne West ChesterWashington, IAnear the ground with debris.
21:18 UTCFUNNEL CLOUD5 Nne West ChesterWashington, IAnear the ground with debris.
21:31 UTCHAIL 1.751 Ese Iowa City MunicipJohnson, IAMedia.
21:31 UTCHAIL 1.751 Ese Iowa City MunicipJohnson, IAMedia.
21:31 UTCHAIL 1.751 Ese Iowa City MunicipJohnson, IAMedia.
21:36 UTCTORNADO3 Sw DowneyJohnson, IAAn EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding.
21:36 UTCTORNADO3 Sw DowneyJohnson, IAAn EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding.
21:44 UTCTORNADO1 E SpringdaleCedar, IARope tornado on the ground near X40 east of West Branch.
21:44 UTCTORNADO1 E SpringdaleCedar, IARope tornado on the ground near X40 east of West Branch.
21:56 UTCTSTM WND GST 583 Sw TiptonCedar, IA
21:56 UTCTSTM WND GST 583 Sw TiptonCedar, IA
21:56 UTCTSTM WND GST 583 Sw TiptonCedar, IA
21:57 UTCHAIL 1.75TiptonCedar, IAEM reported golf ball size hail and damage.
21:57 UTCHAIL 1.75TiptonCedar, IAEM reported golf ball size hail and damage.
21:57 UTCHAIL 1.75TiptonCedar, IAEM reported golf ball size hail and extensive hail related damage, including to a greenhouse and to roofs and siding in town.
21:57 UTCHAIL 1.75TiptonCedar, IAEM reported golf ball size hail and extensive hail related damage, including to a greenhouse and to roofs and siding in town.
22:00 UTCHAIL 14 Sse ClarenceCedar, IAReport from Trained Spotter: Quarter (1 in.).
22:00 UTCHAIL 14 Sse ClarenceCedar, IAReport from Trained Spotter: Quarter (1 in.).
22:00 UTCHAIL 14 Sse ClarenceCedar, IAReport from Trained Spotter: Quarter (1 in.).
22:12 UTCTSTM WND GST 60LowdenCedar, IA
22:12 UTCTSTM WND GST 60LowdenCedar, IA
22:12 UTCTSTM WND GST 60LowdenCedar, IA
22:12 UTCHAIL 1.75LowdenCedar, IA
22:12 UTCHAIL 1.75LowdenCedar, IA
22:12 UTCHAIL 1.75LowdenCedar, IA
22:18 UTCTSTM WND GST 60WheatlandClinton, IATime estimated using radar.

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

This ground now

The live radar over the trackEvery 2026 tornado in IowaEvery tornado in Iowa since 1950Warnings in force in Iowa nowThe forecast where you are

The other tornadoes of April 2, 2026

12 more have been surveyed in the United States that day, so far.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 24:11 PM CDTEF1Washington, IA3.9100
April 25:25 PM CDTEF1Clinton, IA18.1250
April 25:25 PM CDTEF0Knox, IL8.0150$150
April 26:00 PM CDTEF1Carroll, IL0.375
April 26:02 PM CDTEF1Whiteside, IL4.175
April 26:09 PM CDTEF1Whiteside, IL6.6250
April 26:18 PM CDTEF1Knox, IL5.7100
April 26:18 PM CDTEF1Knox, IL6.2250$250
April 26:23 PM CDTEF0Knox, IL3.760
April 26:24 PM CDTEF1Ogle, IL0.680
April 27:36 PM EDTEF0Parke, IN0.250
April 26:44 PM CDTEF0Ogle, IL2.7350

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. A survey can be revised, so the rating, the path and the casualties can all still change.

Sources

NWS Damage Assessment Toolkit, the record the survey teams file from the damage, and NOAA Storm Prediction Center storm reports. Neither is the official database for 2026, which SPC publishes in the spring of 2027.