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Winter Weather in Grant, South Dakota
Winter Weather February 18, 2026 · Grant, South Dakota
What the National Weather Service wrote
High winds and ice caused a semi to tip, resulting in the closure of Highway 15 south of Milbank. The AWOS 3 miles east northeast of Milbank recorded a peak wind gust of 57 mph at the time of the incident.
The wider storm
A system brought strong winds to the region, with a band of snow across the northeast South Dakota. This resulted in blizzard conditions with widespread travel impacts from the early morning through the afternoon of February 18.
Peak winds associated with the system included a gust measuring 72 mph by a mesonet station owned by a trained spotter in Faulkton, a 71 mph gust recorded by the South Dakota Department of Transportation (SDDOT) Road Weather Information System (RWIS) 4 miles north of Altamont (Deuel county) and a 67 mph gusts measured by the SDDOT RWIS 7 miles east of Clark. 47 additional weather stations would record a peak wind gust at or in excess of 58 mph.
The Andover and Westport COOP observers reported blizzard or ground blizzard conditions at the time of their observations.
Not much overall snowfall occurred with the system, but within the band snowfall averaged about 4 inches with the COOP observers in Westport and Clark reporting a total of 4.1 and 4.0 inches of snowfall respectively. Additionally, the National Weather Service office just outside the Aberdeen Regional Airport measured 3.7 inches.
Source: NOAA Storm Events Database, event 1306993. Narratives are written by the National Weather Service forecast office that issued the report.
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