Alert archive / South Dakota / Tornado Warnings in 2026
Tornado Warning 22, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 31, 2026, 8:03 PM CDT for Minnehaha County, South Dakota. It was in force for 42 min. 1 report 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
- May 31, 2026, 8:03 PM CDT (01:03 UTC)
- Expired
- May 31, 2026, 8:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 21 km from the middle of the area, began a volume at 01:03 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 |
|---|---|---|---|
| May 31, 8:10 PM CDT | TORNADO | 4 W Wall Lake, SD | Radar confirmed tonado. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.1 hours before the alert went out and 189 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
- 1517 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1020 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
052
WFUS53 KFSD 010103
TORFSD
SDC099-010145-
/O.NEW.KFSD.TO.W.0022.260601T0103Z-260601T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
803 PM CDT Sun May 31 2026
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Southwestern Minnehaha County in southeastern South Dakota...
* Until 845 PM CDT.
* At 802 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Wall Lake, or 8 miles southeast of Lake Vermillion
State Recreation Area, moving east at 15 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...
Sioux Falls, Wall Lake, and Ellis around 810 PM CDT.
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.
&&
LAT...LON 4355 9709 4360 9684 4351 9682 4350 9697
4350 9707
TIME...MOT...LOC 0102Z 254DEG 13KT 4353 9702
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SG2 follow-up statements
722
WWUS53 KFSD 010113
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
813 PM CDT Sun May 31 2026
SDC099-010145-
/O.CON.KFSD.TO.W.0022.000000T0000Z-260601T0145Z/
Minnehaha SD-
813 PM CDT Sun May 31 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN MINNEHAHA COUNTY...
At 813 PM CDT, a confirmed tornado was located over Wall Lake, or 9
miles southeast of Lake Vermillion State Recreation Area, moving east
at 10 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Sioux Falls and Wall Lake around 820 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4355 9709 4360 9684 4351 9682 4350 9697
4350 9707
TIME...MOT...LOC 0113Z 253DEG 10KT 4353 9701
TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN
$$
SG437
WWUS53 KFSD 010137
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
837 PM CDT Sun May 31 2026
SDC099-010145-
/O.CON.KFSD.TO.W.0022.000000T0000Z-260601T0145Z/
Minnehaha SD-
837 PM CDT Sun May 31 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR SOUTH
CENTRAL MINNEHAHA COUNTY...
At 837 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Wall Lake, or 8 miles west of Sioux Falls, moving
east at 10 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...
Sioux Falls and Ellis around 840 PM CDT.
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.
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4356 9702 4360 9684 4351 9682 4350 9700
TIME...MOT...LOC 0137Z 258DEG 11KT 4355 9690
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SGThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 7:06 PM CDT | Tornado Warning | FSD | McCook, Minnehaha | 39 min |
| May 31, 7:08 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 52 min |
| May 31, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 52 min |
| May 31, 7:42 PM CDT | Tornado Warning | FSD | McCook, Minnehaha | 23 min |
| May 31, 7:50 PM CDT | Tornado Warning | FSD | Turner | 40 min |
| May 31, 7:54 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 51 min |
| May 31, 8:21 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 54 min |
| May 31, 8:29 PM CDT | Tornado Warning | FSD | Lincoln, Turner | 46 min |
| May 31, 8:42 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner, Yankton | 63 min |
| May 31, 8:43 PM CDT | Tornado Warning | FSD | Minnehaha | 32 min |
| May 31, 8:57 PM CDT | Tornado Warning | FSD | Lincoln, Turner | 35 min |
| May 31, 9:11 PM CDT | Tornado Warning | FSD | Clay, Union | 49 min |
| May 31, 9:43 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 47 min |
| May 31, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Union | 52 min |
Nearby
Tornado Warnings in South Dakota, 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.