When will the power be back on? CenterPoint gives Sunday update KHOU.comHouston ISD announces campus openings for May 20 KPRC Click2HoustonSoutheast Texas schools announce reopening plans following destructive storm KTRK-TVHouston tornadoes: Two EF-1 tornadoes confirmed around Houston area Yahoo! VoicesStill Without Power, Houston Residents Struggle to Stay Cool The New York Times