Flash Flood — Sequatchie, Tennessee

2021-10-06 · near Dunlap, Sequatchie, Tennessee

Event narrative

Numerous roads closed across the county. Evacuations underway along Branch Road. A CoCoRAHS site reported 6.25 inches of rain between noon and midnight 6 NNW of Dunlap. This is roughly the same area impacted by flooding a few weeks ago.

Wider weather episode

A deep 500 MB low over the lower Mississippi Valley, and associated surface low that was nearly stationary beneath it, produced a humid tropical air mass over the area. Convection anchored over the southern Plateau and produced flash flooding in areas that flooded just a few weeks earlier.

View location on OpenStreetMap → (35.4335, -85.3528)

Source: NOAA Storm Events Database, event_id 987562. Narrative written by the NWS forecast office that issued the report.