This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.
Part of: Day County Area Flooding — July 2026 →
Flash Flood Warning issued July 30 at 6:25PM CDT until July 31 at 12:30AM CDT by NWS Aberdeen SD
This is a severe-significance flash flood warning event affecting Big Stone, MN; Traverse, MN; Day, SD; Marshall, SD; Roberts, SD, tracked from official feeds (NOAA / National Weather Service). We update this page as the situation develops.
- Type
- Flash Flood Warning
- Extent
- ≈ 489,001 acres
- Began
- To end
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected area map
The shaded area is the affected-area perimeter reported for this event by NOAA / National Weather Service (Big Stone, MN; Traverse, MN; Day, SD; Marshall, SD; Roberts, SD), colored by hazard type. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.
Interactive affected-area map
Big Stone, MN; Traverse, MN; Day, SD; Marshall, SD; Roberts, SD · ≈ 770 sq mi reported extent · Enable JavaScript to explore the map.
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Restoration help near this event
Tap your city for a vetted local pro on that service, answered 24/7. Where we don't have a nearby city page yet, the step-by-step guides cover what to do first.
Water damage restoration
What to do now
Mold remediation
What to do now
Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS ABR storm report
FLASH FLOOD — 1 SE Aberdeen, SD
Report from mPING: Street/road flooding; Street/road closed; Vehicles stranded.
- Bulletin NWS Aberdeen SD
Flash Flood Warning issued
Big Stone, MN; Traverse, MN; Day, SD; Marshall, SD; Roberts, SD
- News Cowboy State Daily
50 Years Ago: Floating Toilet Saved Cheyenne Man In Devastating Big Thompson Flood
- News CBC
‘Water everywhere:’ Flooding impacts homes, farms and vineyards in Niagara after overnight rainstorm
Show 2 earlier updates
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.