⚠️ Special Weather Statement – Corson; Walworth; Dewey; Potter; Stanley; Sully – Saturday, June 27, 2026

Special Weather Statement issued June 27 at 9:55PM CDT by NWS Aberdeen SD

Details

At 955 PM CDT/855 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near White Horse to near
Swiftbird Day School to near Spring Creek Rec Area. Movement was
northeast at 40 mph.

HAZARD…Wind gusts of 50 to 55 mph and pea size hail.

SOURCE…Radar indicated.

IMPACT…Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include…
Onida, Swiftbird, White Horse, Agar, Little Bend Rec Area, Whitlocks
Bay Rec Area, Gorman, Laplant, Sutton Bay Rec Area, Blackfoot, Sully
Lake, Ridgeview, Tiospaye Topa School, Promise, Okobojo Point Rec
Area, Swan Creek Rec Area, Swiftbird Day School, Cow Creek Rec Area,
Bush’s Landing, and southern Lake Oahe.

Instructions

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until midnight CDT/1100 PM MDT/ for
central and north central South Dakota.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.