Blocking force

KVET/KASE meteorologist Troy Kimmel sees a "large organized southeastward moving cluster of thunderstorms just southeast of San Antonio is moving into the coastal plains" and theorizes:

"My initial thought would be that this system.. being between us and the gulf moisture coming ashore from the Gulf of Mexico.. will temporarily disrupt the moisture flow and perhaps result in less precipitation for the greater Austin area for at least a part of this afternoon."

So far it seems to be working. Radar shows a lot of the heavy rain well east of La Grange, heading north to Bryan.