Much of Southeast Texas, including the city of Houston, was placed under a tornado watch until 4p.m. Tuesday, as severe storms soaked communities in the Hill Country west of Interstate 35. The Southeast Texas counties under the tornado watch include Austin,

A pair of storm systems could fuel heavy rain and flooding across Texas this week. Some areas expect for possible tornadoes or grapefruit-sized hail.

A tornado watch was issued for several Houston-area counties, including Harris and Fort Bend counties, until 4 p.m. by the National Weather Service. Here's what to know.