Alert archive / Iowa / Tornado Warnings in 2026
Tornado Warning 29, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Apr 23, 2026, 8:49 PM CDT for Decatur County, Lucas County, Wayne County, Iowa. It was in force for 41 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 23, 2026, 8:49 PM CDT (01:49 UTC)
- Expired
- Apr 23, 2026, 9:30 PM CDT
- In force
- 41 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Decatur County, IA, Lucas County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 110 km from the middle of the area, began a volume at 01:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 23, 8:58 PM CDT | TSTM WND GST 70 | 1 N Humeston, IA | Local fire department reported 60-70 mph wind gust. |
| Apr 23, 9:02 PM CDT | TSTM WND DMG | Derby, IA | Delayed report. EM reports sporadic tree damage in and around Derby, mostly branches downed or split softwood trunks. |
| Apr 23, 9:12 PM CDT | TSTM WND GST 64 | Millerton, IA | Measured from personal weather station. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 23, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.8 hours before the alert went out and 243 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 2615 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -161 m²/s²
- 0-3 km storm-relative helicity
- -99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -2.3
The text
As transmitted.
117
WFUS53 KDMX 240149
TORDMX
IAC053-117-185-240230-
/O.NEW.KDMX.TO.W.0029.260424T0149Z-260424T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
849 PM CDT Thu Apr 23 2026
The National Weather Service in Des Moines has issued a
* Tornado Warning for...
South central Lucas County in south central Iowa...
Eastern Decatur County in south central Iowa...
Northwestern Wayne County in south central Iowa...
* Until 930 PM CDT.
* At 848 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Leon, moving northeast at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Humeston, Garden Grove, and Le Roy around 855 PM CDT.
Derby around 905 PM CDT.
Other locations impacted by this tornadic thunderstorm include Garden
Grove, Derby, Humeston, Allerton, and Le Roy.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4064 9372 4077 9382 4096 9340 4074 9323
TIME...MOT...LOC 0148Z 234DEG 44KT 4077 9369
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Fowle2 follow-up statements
868
WWUS53 KDMX 240157
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
857 PM CDT Thu Apr 23 2026
IAC053-117-185-240230-
/O.CON.KDMX.TO.W.0029.000000T0000Z-260424T0230Z/
Lucas IA-Decatur IA-Wayne IA-
857 PM CDT Thu Apr 23 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR SOUTH
CENTRAL LUCAS...EAST CENTRAL DECATUR AND NORTHWESTERN WAYNE
COUNTIES...
At 857 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Garden Grove, or 11 miles northeast of Leon, moving
northeast at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Humeston around 900 PM CDT.
Other locations impacted by this tornadic thunderstorm include Garden
Grove, Humeston, Derby, and Allerton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4066 9361 4083 9364 4096 9340 4074 9323
TIME...MOT...LOC 0157Z 241DEG 43KT 4081 9355
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Fowle050
WWUS53 KDMX 240214
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
914 PM CDT Thu Apr 23 2026
IAC053-240223-
/O.CAN.KDMX.TO.W.0029.000000T0000Z-260424T0230Z/
Decatur IA-
914 PM CDT Thu Apr 23 2026
...THE TORNADO WARNING FOR EAST CENTRAL DECATUR COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has !moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Iowa.
LAT...LON 4070 9345 4090 9346 4096 9340 4074 9323
TIME...MOT...LOC 0213Z 260DEG 45KT 4085 9328
$$
IAC117-185-240230-
/O.CON.KDMX.TO.W.0029.000000T0000Z-260424T0230Z/
Lucas IA-Wayne IA-
914 PM CDT Thu Apr 23 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR SOUTH
CENTRAL LUCAS AND NORTH CENTRAL WAYNE COUNTIES...
At 913 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Millerton, or 6 miles north of Corydon, moving east
at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
south central Lucas and north central Wayne Counties, including the
following locations... Allerton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4070 9345 4090 9346 4096 9340 4074 9323
TIME...MOT...LOC 0213Z 260DEG 45KT 4085 9328
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
FowleWhat forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this tornado warning went out at Apr 23, 6:31 PM CDT, 2 hours 18 minutes earlier. Its key messages:
- A line of severe storms will move across Iowa late afternoon and evening. A few non-severe showers and storms possible ahead of the main line. The line of storms will have wind as the primary hazard, though tornadoes and hail are possible.
- Cooler Friday through the weekend. Multiple rounds of showers and thunderstorms possible this weekend and early next week.
Area forecast discussion, Apr 23, 6:31 PM CDT, 2 hours 18 minutes before
Area Forecast Discussion National Weather Service Des Moines IA 631 PM CDT Thu Apr 23 2026 ...Updated for the 00z Aviation Discussion... .KEY MESSAGES... - A line of severe storms will move across Iowa late afternoon and evening. A few non-severe showers and storms possible ahead of the main line. The line of storms will have wind as the primary hazard, though tornadoes and hail are possible. - Cooler Friday through the weekend. Multiple rounds of showers and thunderstorms possible this weekend and early next week. && .SHORT TERM /THROUGH TONIGHT/... Issued at 207 PM CDT Thu Apr 23 2026 A few spotty showers have developed in the moist plume extending into Iowa, though have been fairly sort lived with little mechanism to sustain development. Meanwhile, convection has fired along and just ahead of the cold front pushing across Nebraska and into western Iowa. This will push across Iowa this evening, reaching the I-35 corridor around 7-9pm and pushing east after midnight. There was some concern that prefrontal convection would prevent more robust development with the main line of storms. While this has not yet materialized, the widespread stratus has put a bit of a damper on instability. There is little DCAPE out there and with moist soundings through the low levels, that may prevent better cold pool development except in northern Iowa where there is drier air in place. This would impact wind potential with the line as it blows through. A pool of 2500+ J/kg SBCAPE is in place across western to central Iowa with the Creston sounding showing 1900+ ECAPE as some may not be realized due to entrainment. Shear is largely parallel to the boundary. This could limit some of the tornado threat unless a bowing section can take better advantage of line normal shear. Tornado threat would be highest with initial convection that is more likely to be surface based, along with the low LCLs around 500m. Hail concerns will also be greatest with initial discrete convection when lapse rates are steeper around 7-8 C/km. As the line grows upscale with column moistening and pushes east later this evening threats will start to diminish. && .LONG TERM /FRIDAY THROUGH THURSDAY/... Issued at 207 PM CDT Thu Apr 23 2026 Relatively cooler conditions settle in Friday through the weekend and much of the upcoming week. While cooler that recent days, average highs this tie of year are in the mid 60s, so temperatures will be closer to what is "typical" for this time of year. The pattern remains active This weekend and next week as several embedded shortwave eject east from a longwave trough parked across Alberta and Saskatchewan. The first is rather weak and may skim the area on Saturday. Then a more robust wave lifts out of Missouri towards the area on Sunday. This will interact with the main longwave trough finally digging east Sunday into Monday. As this interacts with the system lifting out of Missouri thunderstorms are expected into Iowa. Placement of the warm sector will impact severe threats into Iowa and will be better determined in the next few days. && .AVIATION /00Z TAFS THROUGH 00Z SATURDAY/... Issued at 623 PM CDT Thu Apr 23 2026 Main aviation concern in the short term will focus on progression of line of strong to severe thunderstorms through central Iowa. Thunderstorms with heavy rain will impact all terminals with low-end MVFR to IFR conditions likely. Cannot rule out brief LIFR, but will monitor trends for this threat. Have maintained greatest impacts at DSM/FOD/MCW as intensity should be highest at these sites before slight decreases east of I-35. Can't rule out brief 40+ knot gusts as leading edge of storms move in but will pinpoint timing better before inserting mention at DSM with later amendments. Tonight, skies should clear quickly once TSRA depart. Will maintain some lower coverage of low/mid clouds for the early morning Friday before sunny to mostly sunny skies prevail across the area for the bulk of the daytime Friday. Winds may increase early in the morning, potentially around 20-25 knots our of the northwest, with a gradual decrease towards the end of the period. && .DMX WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...Hagenhoff LONG TERM...Hagenhoff AVIATION...NMJ/WFO LBF
Hazardous weather outlook, Apr 23, 4:44 AM CDT, 16 hours 5 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 444 AM CDT Thu Apr 23 2026 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-240945- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 444 AM CDT Thu Apr 23 2026 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight There is a Slight Risk (level 2 of 5) for severe weather over most of Iowa. Damaging wind is the main threat. Tornadoes and large hail will also be possible, mainly early in the event in western and southwestern Iowa, with the threat diminishing and storms move east. Locally heavy rainfall and ponding may also occur. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Additional thunderstorms possible Sunday night into Monday. There is a Slight Risk for severe weather Monday. .SPOTTER INFORMATION STATEMENT... Spotters may be needed Thursday into Thursday night.
In the hours before
Local storm report, Apr 23, 7:37 PM CDT, 1 hour 12 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
737 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0733 PM Tornado 2 ENE Slater 41.89N 93.66W
04/23/2026 Story IA Fire Dept/Rescue
Several reports from local fire department
and spotters of tornado on the ground.
&&
TRLocal storm report, Apr 23, 8:02 PM CDT, 47 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
802 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM Tstm Wnd Gst Des Moines Int Airport 41.54N 93.66W
04/23/2026 M59 MPH Polk IA ASOS
&&Local storm report, Apr 23, 8:12 PM CDT, 37 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
812 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0808 PM Hail 1 NE Saylorville 41.69N 93.61W
04/23/2026 M1.00 Inch Polk IA Public
Report from mPING: Quarter (1.00 in.).
&&Local storm report, Apr 23, 8:27 PM CDT, 22 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
827 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0825 PM Tornado 4 S Mitchellville 41.60N 93.36W
04/23/2026 Polk IA Trained Spotter
Trained spotter reports tornado on the
ground.
&&
TRLocal storm report, Apr 23, 8:40 PM CDT, 9 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
840 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0720 PM Tstm Wnd Dmg 2 NNW Winterset 41.37N 94.04W
04/23/2026 Madison IA Public
Tree damage.
&&
TRLocal storm report, Apr 23, 8:42 PM CDT, 7 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
842 PM CDT Thu Apr 23 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0837 PM Tstm Wnd Gst 2 ENE Lamoni 40.63N 93.90W
04/23/2026 M70 MPH Decatur IA ASOS
&&
JRThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 7:04 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Guthrie, Madison, Polk and 2 more | 56 min |
| Apr 23, 7:09 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Madison, Ringgold, Taylor, Union | 66 min |
| Apr 23, 7:15 PM CDT | Tornado Warning | DMX | Boone, Dallas, Polk, Story | 45 min |
| Apr 23, 7:16 PM CDT | Tornado Warning | DMX | Dallas, Madison, Warren | 29 min |
| Apr 23, 7:21 PM CDT | Tornado Warning | DMX | Dallas, Madison | 24 min |
| Apr 23, 7:39 PM CDT | Tornado Warning | DMX | Dallas, Madison, Polk, Warren | 51 min |
| Apr 23, 7:46 PM CDT | Tornado Warning | DMX | Marshall, Polk, Story | 32 min |
| Apr 23, 7:50 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Jasper, Madison, Polk, Story and 1 more | 40 min |
| Apr 23, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Grundy, Hamilton, Hardin, Marshall, Story | 50 min |
| Apr 23, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Madison, Ringgold, Taylor, Union and 1 more | 61 min |
| Apr 23, 8:15 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 45 min |
| Apr 23, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 66 min |
| Apr 23, 8:25 PM CDT | Tornado Warning | DMX | Jasper, Polk | 23 min |
| Apr 23, 8:38 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Marion, Warren, Wayne | 52 min |
| Apr 23, 8:39 PM CDT | Tornado Warning | DMX | Clarke, Decatur, Lucas, Wayne | 33 min |
| Apr 23, 9:02 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Mahaska, Marion, Monroe, Warren and 1 more | 58 min |
| Apr 23, 9:08 PM CDT | Tornado Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 30 min |
| Apr 23, 9:40 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Mahaska, Marion, Monroe, Wapello | 65 min |
Nearby
Tornado Warnings in Iowa, 2026Every tornado warning in 2026Tornadoes in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.