Bertha's heavy rainfall, with totals of 2 to 4 inches and isolated amounts up to 6 inches, poses a risk of flash flooding, particularly in urban areas along the Texas Gulf Coast and South Texas. Coastal areas in Louisiana and Texas have experienced storm surges of up to 2 feet, and some parks, piers, and low-lying roads have been closed as a precaution. Residents in the affected areas should remain alert for potential flooding and hazardous conditions.