A strong upper level storm system will bring periods of showers and thunderstorms Sunday into Monday. The main focus remains Sunday afternoon through Monday morning. 1 to 2 inches of rain with isolated amounts of 4 to 5 inches are possible along and east of the Interstate 35 & Interstate 37 corridors, with the highest amounts expected in the La Grange to Giddings areas. 1 inch or less is expected west of the US HWY 281 corridor, with amounts dropping to less than 1/2 inch along the Rio Grande. The higher rainfall amounts may cause flash flooding and a potential for river flooding. Stay tuned to later forecasts for updates on rain chances, rainfall totals and potential flooding. In addition, there is a slight risk for severe thunderstorms with wind gusts to 60 mph and hail up to 1 inch in diameter being the main severe weather concerns.