Thunderstorm Wind — Lincoln, South Dakota

2021-08-28 · near Lennox, Lincoln, South Dakota

Event narrative

Most of the rubber roof liner on the section of Lennox High School with the band and shop classrooms was removed by thunderstorm winds. Interior ceilings and equipment incurred water damage. Property damage costs are a rough estimate.

Wider weather episode

An unstable warm sector with MUCAPE up to 2000-2500 J/kg developed during the afternoon between an advancing cold front across southeast South Dakota and a gangly warm front extending into southwest Minnesota. An approaching weak impulse spurred rapid development of multiple rounds of storms near the warm front, initially discrete, with upscale growth into short bowing segments. Secondary development occurred during the evening along the cold front, which evolved into a slow-moving linear system with hail, wind, and heavy rainfall with shear vectors increasingly parallel to the boundary.

View location on OpenStreetMap → (43.3430, -96.8937)

Source: NOAA Storm Events Database, event_id 983226. Narrative written by the NWS forecast office that issued the report.