Miami and Linn counties are in a flash flood watch until midday Thursday, Aug. 22.

A serve thunderstorm was located in the Linn Valley and La Cygne area about 7:45 p.m. Wednesday, Aug. 21, according to the National Weather Service (NWS). The weather service reported additional thunderstorms producing heavy rainfall are expected to develop Wednesday evening across Miami and Linn counties and continue overnight. Rainfall totals of up to 3 inches or more in some areas are possible, according to NWS.

Low-lying, flood-prone areas will be most susceptible to flash flooding, with areas near rivers, creeks, and streams likely to become flooded during and immediately after heavy rainfall, according to NWS.

(Read more: The Miami County Republic)