Oct 8, 2018
An upper level trough over the southwestern US moved slowly toward the east causing heights to fall over Texas. A shortwave trough moved through this pattern and triggered thunderstorms across the western part of South Central Texas. Southeasterly low level flow ahead of this disturbance had increased precipitable water values to around 1.8 inches which was sufficient to produce locally heavy rain that led to flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 787773). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Kerr County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.