Flash Flood — Osage, Missouri

2023-08-02 to 2023-08-03 · near Chamois, Osage, Missouri

Event narrative

Up to 8 inches of rain fell in a short amount of time causing flash flooding across the northeastern portions of Osage County. Numerous roads were flooded. U.S. Highway 50 just southeast of Linn was flooded. Deer creek rose well above it's banks flooding County Roads 323 and 321 four miles southwest of Chamois. Also, Highway 100 was flooded in a section from 1 mile west of Chamois to 2 miles west of Chamois.

Wider weather episode

Thunderstorms developed over central Missouri during the early evening hours. They moved east/southeast through the overnight hours. Numerous large hail and damaging wind reports were received. During the late evening through overnight hours, widespread heavy rain fell causing flash flooding. There was fairly widespread 1-3 rainfall totals, with isolated 6-8+ in central Missouri and south-central Illinois.

View location on OpenStreetMap → (38.6813, -91.7570)

Source: NOAA Storm Events Database, event_id 1143513. Narrative written by the NWS forecast office that issued the report.