Flash Flood — Gasconade, Missouri

2020-07-31 · near Pershing, Gasconade, Missouri

Event narrative

Up to 6 inches of rain fell in a short amount of time causing flash flooding. Several roads were flooded including Highway 100 near Gasconade.

Wider weather episode

An upper level low centered over Missouri moved slowly eastward with two lobes of vorticity that were pivoting around each other. The interaction of the two vort maxes produced two distinct areas of heavy rain, one over central/east central Missouri and another over south central and southeast Missouri. Very heavy rain fell in these areas, mainly between 3 and 4 inches of rain, though a few areas had around 6 to 7 inches of rain with this system. There were several reports of flash flooding.

View location on OpenStreetMap → (38.6100, -91.6400)

Source: NOAA Storm Events Database, event_id 911094. Narrative written by the NWS forecast office that issued the report.