Alert archive / Iowa / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 21, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 23, 2026, 3:27 PM CDT for Ida County, Woodbury County, Iowa. It was in force for 48 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, 3:27 PM CDT (20:27 UTC)
- Expired
- Apr 23, 2026, 4:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Ida County, IA, Woodbury County, IA
The radar
The Omaha radar (KOAX), 133 km from the middle of the area, began a volume at 20:31 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, 3:29 PM CDT | HAIL 1 | 4 Nne Danbury, IA | Photos shared on Facebook of quarter sized hail between Danbury and Battle Creek. Time estimated via radar. |
| Apr 23, 3:40 PM CDT | HAIL 1.5 | 4 N Battle Creek, IA | |
| Apr 23, 3:52 PM CDT | HAIL 1 | 1 S Holstein, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 12:02 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.5 hours before the alert went out and 319 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 222 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
305
WUUS53 KFSD 232027
SVRFSD
IAC093-193-232115-
/O.NEW.KFSD.SV.W.0021.260423T2027Z-260423T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
327 PM CDT Thu Apr 23 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Woodbury County in west central Iowa...
Ida County in west central Iowa...
* Until 415 PM CDT.
* At 327 PM CDT, a severe thunderstorm was located over Danbury, or
12 miles west of Ida Grove, moving north at 35 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Battle Creek around 330 PM CDT.
Cushing around 335 PM CDT.
Holstein around 340 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.
&&
LAT...LON 4221 9561 4222 9585 4256 9574 4256 9539
4247 9539
TIME...MOT...LOC 2027Z 198DEG 32KT 4227 9571
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Weisser3 follow-up statements
385
WWUS53 KFSD 232032
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
332 PM CDT Thu Apr 23 2026
IAC093-193-232115-
/O.CON.KFSD.SV.W.0021.000000T0000Z-260423T2115Z/
Woodbury IA-Ida IA-
332 PM CDT Thu Apr 23 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTHEASTERN WOODBURY AND CENTRAL IDA COUNTIES...
At 332 PM CDT, a severe thunderstorm was located over Battle Creek,
or 9 miles west of Ida Grove, moving northeast at 45 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
Holstein and Cushing around 340 PM CDT.
Galva around 345 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4221 9561 4225 9578 4256 9571 4256 9539
4247 9539
TIME...MOT...LOC 2032Z 214DEG 38KT 4232 9566
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Weisser493
WWUS53 KFSD 232047
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
347 PM CDT Thu Apr 23 2026
IAC193-232056-
/O.CAN.KFSD.SV.W.0021.000000T0000Z-260423T2115Z/
Woodbury IA-
347 PM CDT Thu Apr 23 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WOODBURY COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.
&&
LAT...LON 4237 9557 4235 9567 4256 9566 4256 9539
4247 9539
TIME...MOT...LOC 2046Z 198DEG 32KT 4244 9561
$$
IAC093-232115-
/O.CON.KFSD.SV.W.0021.000000T0000Z-260423T2115Z/
Ida IA-
347 PM CDT Thu Apr 23 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR NORTHERN IDA COUNTY...
At 346 PM CDT, a severe thunderstorm was located near Cushing, or 9
miles northwest of Ida Grove, moving north at 35 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
Holstein around 350 PM CDT.
Other locations in the path of this severe thunderstorm include
Galva.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4237 9557 4235 9567 4256 9566 4256 9539
4247 9539
TIME...MOT...LOC 2046Z 198DEG 32KT 4244 9561
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Weisser279
WWUS53 KFSD 232115 RRA
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
415 PM CDT Thu Apr 23 2026
IAC093-232125-
/O.EXP.KFSD.SV.W.0021.000000T0000Z-260423T2115Z/
Ida IA-
415 PM CDT Thu Apr 23 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN IDA COUNTY HAS
EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.
A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.
&&
LAT...LON 4237 9557 4235 9567 4256 9566 4256 9539
4247 9539
TIME...MOT...LOC 2115Z 198DEG 32KT 4268 9551
$$
WeisserThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 12:12 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 48 min |
| Apr 23, 12:48 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 42 min |
| Apr 23, 3:12 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 48 min |
| Apr 23, 3:37 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 38 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2026Every severe thunderstorm warning 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.