Alert archive / Minnesota / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 154, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 10, 2025, 1:01 AM CDT for Minnehaha County, South Dakota; Lyon County, Iowa; Nobles County, Rock County, Minnesota. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 10, 2025, 1:01 AM CDT (06:01 UTC)
- Expired
- Jul 10, 2025, 1:17 AM CDT
- In force
- 16 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lyon County, IA, Nobles County, MN, Rock County, MN, Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 38 km from the middle of the area, began a volume at 06:04 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.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 6.0 hours before the alert went out and 254 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
- 3800 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1154 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 13.5
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 10, 12:49 AM CDT, 12 minutes earlier.
Area forecast discussion, Jul 10, 12:49 AM CDT, 12 minutes before
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</html>Hazardous weather outlook, Jul 9, 6:00 PM CDT, 7 hours 1 minute before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 600 PM CDT Wed Jul 9 2025 SDZ038-050-052-053-057>059-063-064-101200- Beadle-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison-Charles Mix- Douglas- 600 PM CDT Wed Jul 9 2025 This Hazardous Weather Outlook is for central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Tonight. A line of scattered thunderstorms is expected to track southeast into the region late this evening. Strong to severe storms may persist with this activity, capable of damaging winds up to 75 mph, half dollar sized hail, and heavy downpours. Greatest threat is west of the James River through 11 PM, with storms weakening with eastern extent. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Isolated strong to severe storms and heavy downpours will again be possible on Thursday and Friday. With the potential for severe weather ahead, make sure to continue monitoring your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed through midnight tonight. IAZ001-002-012-013-020-021-031-032-MNZ071-080-089-097-098-NEZ013-014- SDZ039-040-054>056-060>062-065>071-101200- Lyon-Osceola-Sioux-O'Brien-Plymouth-Cherokee-Woodbury-Ida-Lincoln- Murray-Nobles-Pipestone-Rock-Dixon-Dakota-Kingsbury-Brookings-Miner- Lake-Moody-Hanson-McCook-Minnehaha-Hutchinson-Turner-Bon Homme- Yankton-Clay-Union- 600 PM CDT Wed Jul 9 2025 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, east central South Dakota and southeast South Dakota. .DAY ONE...Tonight. A line of scattered thunderstorms is expected to track southeast into the region overnight. Strong to severe storms may persist with this activity, capable of damaging winds up to 75 mph, half dollar sized hail, and heavy downpours. Greatest threat is west of the James River, with storms weakening with eastern extent. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Isolated strong to severe storms and heavy downpours will again be possible on Thursday and Friday. With the potential for severe weather ahead, make sure to continue monitoring your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed overnight. IAZ003-014-022-MNZ072-081-090-101200- Dickinson-Clay-Buena Vista-Lyon-Cottonwood-Jackson- 600 PM CDT Wed Jul 9 2025 This Hazardous Weather Outlook is for northwest Iowa and southwest Minnesota. .DAY ONE...Tonight. Low chances for showers and storms will be possible overnight. Weakening thunderstorms will be capable of producing heavy downpours and stronger wind gusts to 50 mph. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Isolated strong to severe storms and heavy downpours will again be possible on Thursday and Friday. With the potential for severe weather ahead, make sure to continue monitoring your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jul 10, 12:05 AM CDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service Sioux Falls SD
1205 AM CDT Thu Jul 10 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1139 PM Tstm Wnd Gst 5 NNW Howard 44.09N 97.55W
07/09/2025 M57 MPH Miner SD Public
Mesonet station SD5897.
&&
TRMLocal storm report, Jul 10, 12:24 AM CDT, 37 minutes before
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</html>Local storm report, Jul 10, 12:27 AM CDT, 34 minutes before
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</html>Local storm report, Jul 10, 12:34 AM CDT, 27 minutes before
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</html>Local storm report, Jul 10, 12:55 AM CDT, 6 minutes before
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</html>The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:35 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 55 min |
| Jul 9, 9:30 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Brule, Jerauld, Sanborn | 90 min |
| Jul 9, 9:30 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 75 min |
| Jul 9, 10:48 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Brookings, Davison, Hanson, Kingsbury, Lake and 3 more | 57 min |
| Jul 9, 11:00 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Turner, Yankton | 45 min |
| Jul 9, 11:31 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson, Lake, Lincoln, McCook, Miner and 3 more | 59 min |
| Jul 10, 12:13 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 47 min |
| Jul 10, 12:37 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 53 min |
| Jul 10, 1:30 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 30 min |
| Jul 10, 1:29 PM CDT | Flood Watch | FSD | Ida, Woodbury | 18 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2025Severe Thunderstorm Warnings in South Dakota, 2025Severe Thunderstorm Warnings in Iowa, 2025Every severe thunderstorm warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.