Thunderstorm Wind — Mille Lacs, Minnesota

2020-08-14 · near Onamia, Mille Lacs, Minnesota

Event narrative

Two large barns had their roof structure uplifted and blown off south of Onamia.

Wider weather episode

During the afternoon of Friday, August, 14th, thunderstorms developed along a warm front across central Minnesota, with additional development southward in the warm sector by the late afternoon, and early evening. These storms were able to produce many tornadoes, most of which were rated EF-0, but three were rated EF-1. In addition to the tornadoes, there were other reports of downburst wind damage throughout central and southern Minnesota.

Over a two week period, there were numerous road trips to determine if tornadoes occurred in rural areas. Due to the several storm spotters, emergency managers, and those who had drones to further the investigation, plus individuals recording the brief touchdowns, there were 16 tornadoes that occurred in Chanhassen NWS forecast area. Most of the tornadoes were confined to rural farmland, but there were a few that did damage farms, sheds, and outbuildings.

View location on OpenStreetMap → (46.0393, -93.6618)

Source: NOAA Storm Events Database, event_id 906046. Narrative written by the NWS forecast office that issued the report.