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.
EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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) | Expired | Product | Office |
|---|---|---|---|
| 18:44 UTC | 22:35 UTC | Tornado Watch | DVN |
| 20:56 UTC | 21:45 UTC | Tornado Warning | DVN |
| 20:59 UTC | 22:00 UTC | Severe Thunderstorm Warning | DVN |
| 21:27 UTC | 21:47 UTC | Tornado Warning | DVN |
| 21:56 UTC | 22:19 UTC | Severe Thunderstorm Warning | DVN |
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.
- 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
The surface observations
Iowa City (IOW), 16 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 19:40 UTC | 22 kt | 1000.7 | ||||
| 19:45 UTC | 190° 14 kt | 19 | 1000.3 | |||
| 19:47 UTC | 69.8 | 62.6 | 190° 16 kt | 28 | 1000.3 | |
| 19:50 UTC | 190° 18 kt | 24 | 1000.3 | |||
| 19:52 UTC | 70 | 62 | 190° 18 kt | 25 | 1000.3 | |
| 19:55 UTC | 190° 18 kt | 26 | 1000.3 | |||
| 20:00 UTC | 190° 15 kt | 1000.3 | ||||
| 20:05 UTC | 190° 16 kt | 23 | 1000.3 | |||
| 20:10 UTC | 190° 16 kt | 23 | 1000 | |||
| 20:15 UTC | 200° 16 kt | 24 | 1000 | |||
| 20:20 UTC | 190° 17 kt | 23 | 1000 | |||
| 20:25 UTC | 180° 20 kt | 25 | 999.7 | |||
| 20:30 UTC | 190° 15 kt | 999.7 | ||||
| 20:35 UTC | 190° 16 kt | 24 | 999.7 | |||
| 20:36 UTC | 72 | 61 | 190° 18 kt | 25 | 999.7 | |
| 20:40 UTC | 26 | 999.7 | ||||
| 20:45 UTC | 200° 16 kt | 999.7 | ||||
| 20:50 UTC | 190° 15 kt | 999.3 | ||||
| 20:52 UTC | 72 | 61 | 190° 14 kt | 26 | 999.3 | |
| 20:55 UTC | 190° 13 kt | 999.3 | ||||
| 21:00 UTC | 190° 13 kt | 19 | 999.3 | |||
| 21:05 UTC | 190° 13 kt | 18 | 999 | |||
| 21:10 UTC | 190° 13 kt | 18 | 999 | |||
| 21:15 UTC | 190° 13 kt | 999 | ||||
| 21:17 UTC | 71 | 60 | 200° 13 kt | 999 | TS | |
| 21:20 UTC | 190° 14 kt | 999 | RA | |||
| 21:25 UTC | 190° 12 kt | 25 | 999.3 | RA | ||
| 21:30 UTC | 220° 14 kt | 26 | 999.7 | +RA | ||
| 21:32 UTC | 67 | 60 | 220° 22 kt | 33 | 999.7 | +TSRA |
| 21:35 UTC | 200° 16 kt | 1000.3 | +RA | |||
| 21:38 UTC | 63 | 58 | 230° 14 kt | 33 | 1000.3 | +TSRA |
| 21:40 UTC | 26 | 999.7 | +RA | |||
| 21:45 UTC | 20 kt | 32 | 1000.7 | +RA | ||
| 21:50 UTC | 220° 17 kt | 30 | 1000.3 | +RA | ||
| 21:52 UTC | 61 | 56 | 210° 16 kt | 33 | 999.7 | +TSRA |
| 21:55 UTC | 210° 17 kt | 22 | 999.7 | +RA | ||
| 21:58 UTC | 61 | 56 | 210° 20 kt | 31 | 999.7 | -TSRA |
| 22:00 UTC | 210° 17 kt | 22 | 999.7 | -RA | ||
| 22:00 UTC | 61 | 56 | 210° 17 kt | 27 | 999.7 | -TSRA |
| 22:05 UTC | 1000 | -RA | ||||
| 22:07 UTC | 61 | 56 | 1000 | -TSRA | ||
| 22:10 UTC | 1000 | -RA | ||||
| 22:15 UTC | 1000 | |||||
| 22:17 UTC | 61 | 56 | 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 UTC | 63 | 56 | 1000.3 | |||
| 22:55 UTC | 1000.3 | |||||
| 23:00 UTC | 1000.3 | |||||
| 23:05 UTC | 230° 14 kt | 1000.3 | ||||
| 23:10 UTC | 230° 12 kt | 1000.7 | ||||
| 23:15 UTC | 230° 12 kt | 17 | 1000.7 | |||
| 23:20 UTC | 230° 15 kt | 1001 | ||||
| 23:25 UTC | 230° 14 kt | 1001 | ||||
| 23:30 UTC | 240° 16 kt | 21 | 1001 | |||
| 23:35 UTC | 240° 13 kt | 18 | 1001 |
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) | Report | Where | County | Remark |
|---|---|---|---|---|
| 20:56 UTC | TSTM WND GST 50 | 3 E Keota | Washington, IA | Measured with anemometer. |
| 20:56 UTC | TSTM WND GST 50 | 3 E Keota | Washington, IA | Measured with anemometer. |
| 20:56 UTC | TSTM WND GST 50 | 3 E Keota | Washington, IA | Measured with anemometer. |
| 20:59 UTC | TSTM WND GST 64 | 3 Nw Parnell | Iowa, IA | |
| 20:59 UTC | TSTM WND GST 64 | 3 Nw Parnell | Iowa, IA | |
| 20:59 UTC | TSTM WND GST 64 | 3 Nw Parnell | Iowa, IA | |
| 21:11 UTC | TORNADO | 2 S Richmond | Washington, IA | This 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 UTC | TORNADO | 2 S Richmond | Washington, IA | This 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 UTC | HAIL 1.75 | 1 W Kalona | Washington, IA | |
| 21:13 UTC | HAIL 1.75 | 1 W Kalona | Washington, IA | |
| 21:13 UTC | HAIL 1.75 | 1 W Kalona | Washington, IA | |
| 21:13 UTC | HAIL 2.5 | 1 Nnw Kalona | Washington, IA | Damage 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 UTC | HAIL 2.5 | 1 Nnw Kalona | Washington, IA | Damage 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 UTC | FUNNEL CLOUD | 5 Nne West Chester | Washington, IA | near the ground with debris. |
| 21:18 UTC | FUNNEL CLOUD | 5 Nne West Chester | Washington, IA | near the ground with debris. |
| 21:18 UTC | FUNNEL CLOUD | 5 Nne West Chester | Washington, IA | near the ground with debris. |
| 21:31 UTC | HAIL 1.75 | 1 Ese Iowa City Municip | Johnson, IA | Media. |
| 21:31 UTC | HAIL 1.75 | 1 Ese Iowa City Municip | Johnson, IA | Media. |
| 21:31 UTC | HAIL 1.75 | 1 Ese Iowa City Municip | Johnson, IA | Media. |
| 21:36 UTC | TORNADO | 3 Sw Downey | Johnson, IA | An EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding. |
| 21:36 UTC | TORNADO | 3 Sw Downey | Johnson, IA | An EF0 tornado lofted a corn crib, snapped trees, bent an auger, and partially destroyed a roof on a farm outbuilding. |
| 21:44 UTC | TORNADO | 1 E Springdale | Cedar, IA | Rope tornado on the ground near X40 east of West Branch. |
| 21:44 UTC | TORNADO | 1 E Springdale | Cedar, IA | Rope tornado on the ground near X40 east of West Branch. |
| 21:56 UTC | TSTM WND GST 58 | 3 Sw Tipton | Cedar, IA | |
| 21:56 UTC | TSTM WND GST 58 | 3 Sw Tipton | Cedar, IA | |
| 21:56 UTC | TSTM WND GST 58 | 3 Sw Tipton | Cedar, IA | |
| 21:57 UTC | HAIL 1.75 | Tipton | Cedar, IA | EM reported golf ball size hail and damage. |
| 21:57 UTC | HAIL 1.75 | Tipton | Cedar, IA | EM reported golf ball size hail and damage. |
| 21:57 UTC | HAIL 1.75 | Tipton | Cedar, IA | EM reported golf ball size hail and extensive hail related damage, including to a greenhouse and to roofs and siding in town. |
| 21:57 UTC | HAIL 1.75 | Tipton | Cedar, IA | EM reported golf ball size hail and extensive hail related damage, including to a greenhouse and to roofs and siding in town. |
| 22:00 UTC | HAIL 1 | 4 Sse Clarence | Cedar, IA | Report from Trained Spotter: Quarter (1 in.). |
| 22:00 UTC | HAIL 1 | 4 Sse Clarence | Cedar, IA | Report from Trained Spotter: Quarter (1 in.). |
| 22:00 UTC | HAIL 1 | 4 Sse Clarence | Cedar, IA | Report from Trained Spotter: Quarter (1 in.). |
| 22:12 UTC | TSTM WND GST 60 | Lowden | Cedar, IA | |
| 22:12 UTC | TSTM WND GST 60 | Lowden | Cedar, IA | |
| 22:12 UTC | TSTM WND GST 60 | Lowden | Cedar, IA | |
| 22:12 UTC | HAIL 1.75 | Lowden | Cedar, IA | |
| 22:12 UTC | HAIL 1.75 | Lowden | Cedar, IA | |
| 22:12 UTC | HAIL 1.75 | Lowden | Cedar, IA | |
| 22:18 UTC | TSTM WND GST 60 | Wheatland | Clinton, IA | Time 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.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| April 2 | 4:11 PM CDT | EF1 | Washington, IA | 3.9 | 100 | |||
| April 2 | 5:25 PM CDT | EF1 | Clinton, IA | 18.1 | 250 | |||
| April 2 | 5:25 PM CDT | EF0 | Knox, IL | 8.0 | 150 | $150 | ||
| April 2 | 6:00 PM CDT | EF1 | Carroll, IL | 0.3 | 75 | |||
| April 2 | 6:02 PM CDT | EF1 | Whiteside, IL | 4.1 | 75 | |||
| April 2 | 6:09 PM CDT | EF1 | Whiteside, IL | 6.6 | 250 | |||
| April 2 | 6:18 PM CDT | EF1 | Knox, IL | 5.7 | 100 | |||
| April 2 | 6:18 PM CDT | EF1 | Knox, IL | 6.2 | 250 | $250 | ||
| April 2 | 6:23 PM CDT | EF0 | Knox, IL | 3.7 | 60 | |||
| April 2 | 6:24 PM CDT | EF1 | Ogle, IL | 0.6 | 80 | |||
| April 2 | 7:36 PM EDT | EF0 | Parke, IN | 0.2 | 50 | |||
| April 2 | 6:44 PM CDT | EF0 | Ogle, IL | 2.7 | 350 |
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.