A disturbance will be moving down from the north on Sunday. Showers & thunderstorms expected in the morning over the Brazos Valley/Piney Woods region and should quickly dissipate as they move southward. Another stronger cluster of thunderstorms is expected to develop over portions of SE Texas in the afternoon and evening. Conditions will be favorable for this second round of storms to be strong to severe at times. Main threats are damaging winds and hail. Cannot rule out a brief isolated tornado. Some locations may also see brief periods of heavy rain.