Winter Storm — Moody, South Dakota

2024-03-24 to 2024-03-26 · Moody, South Dakota

Event narrative

Snow developed early but changed to a period of mixed precipitation by midday on the 24th as temperatures warmed above freezing. Ice accumulated up to one tenth of an inch before snow redeveloped by early morning on the 25th. With an increase in north winds which gusted as high as 49 mph 13 miles west of Ward and 44 mph at Flandreau, visibility dropped to as low as 1/2 mile at times. Snow totaled 7.5 inches 11 miles north of Colman and at Flandreau.

Wider weather episode

A deep trough of low pressure pushed slowly out of the southern Rockies and spurred development of a strong area of low pressure, which moved slolwly from eastern Colorado on the 24th to the western Great Lakes on the 26th. Abundant warm air near the surface and aloft limited wintry impacts over northwest Iowa and forced a mix of wintry types or change to rain or drizzle as far west as the Missouri River in southeast South Dakota as surface temperatures climbed near or above freezing after the initial warm advection snow on the 24th. This coated and crusted over the new snow cover and when intense winds which gusted to 40 to 55 mph developed on the 25th into the 26th behind the system, widespread blizzard conditions failed to develop. Nevertheless, hazardous travel conditions with numerous slide-ins and accidents were reported across much of southeast South Dakota into southwest Minnesota.

Multi-day snow accumulation was generally from 4 to 12 inches from south central to east central South Dakota and into northern areas of southwest Minnesota, with peak wind gusts as high as 55 mph near Wagner, Dallas, and Dixon.

Source: NOAA Storm Events Database, event_id 1169736. Narrative written by the NWS forecast office that issued the report.