Several clusters and bands of strong thunderstorms continue to advance Southeastward toward the I-35 Corridor at this hour. Above is the latest image taken from the New Braunfels, TX radar.
Based on present movement of this activity, thunderstorms will overspread the Austin-San Antonio corridor along I-35 between Midnight and 1:30 AM CDT. Very heavy downpours, gusty winds to 50 mph and hail up to quarter size will be possible with the strongest storms.
Once activity enters a given locality, it will take about one hour to one and a half hours for the storms to pass through. I am hopeful that most areas will receive at least one-half inch of rain, with localized amounts of 1.5 inches possible.