Thunderstorm Wind — Shelby, Indiana

2023-02-27 · near Geneva, Shelby, Indiana

Event narrative

Thunderstorm winds downed individual trees at five separate locations to the southeast of Shelbyville, along or near a line from the intersection of County Roads 200 East and 600 South to the community of Blue Ridge.

Wider weather episode

A potent cyclone crossed northern Illinois, bringing central Indiana into its warm sector. This allowed very strong vertical wind shear courtesy of the system's strong low-level jet stream to combine with the warm sector's adequate instability, producing several severe thunderstorms. Near the greatest shear and instability, small supercell thunderstorms produced severe straight line winds, with one supercell spawning two EF-1 tornadoes in Hancock County.

View location on OpenStreetMap → (39.4018, -85.6844)

Source: NOAA Storm Events Database, event_id 1082953. Narrative written by the NWS forecast office that issued the report.