Flash Flood — Irion, Texas

2021-08-17 · near Mertzon, Irion, Texas

Event narrative

A social media post indicated several streets and low water crossings flooded in Mertzon.

Wider weather episode

The combination of abundant tropical moisture and a weak upper level disturbance produced a complex of slow moving thunderstorms across the Concho Valley. As a result, very heavy rain fell in a short period of time on the morning of August 17 and produced flash flooding in San Angelo and Mertzon. Also, radar rainfall estimates were 9 to 10 inches in northwest Tom Green County, just west of OC Fisher Reservoir.

View location on OpenStreetMap → (31.2542, -100.8164)

Source: NOAA Storm Events Database, event_id 981241. Narrative written by the NWS forecast office that issued the report.