Earlier this week, it was thought that heavy rainfall could begin in San Antonio by Wednesday night. But forecast models since then have shown that the incoming cold front will be delayed by around 12 hours, meaning that the highest chances for rain are now expected to arrive Thursday morning.
The flood watch issued for South-Central Texas will still go into effect at 7 p.m. Wednesday. However, mostly dry weather is expected throughout the region until midnight, especially over the Interstate 35 corridor. An isolated shower or storm remains possible, but rain chances on Wednesday will only be around 20%.
A strong line of thunderstorms is likely to start pushing through the Hill Country during the predawn hours Thursday, likely between 2 and 6 a.m. This line will continue southeast, likely moving close to the San Antonio area by sunrise.
San Antonio’s highest chance of heavy rainfall will occur between 6 a.m. and noon Thursday, as the slow-moving line of storms moves across Interstate 35. Scattered showers and thunderstorms may continue during the afternoon, but activity will become less widespread…