Deadly storms slam Houston yet again as more than 1 million customers without power in Texas

Deadly thunderstorms blew out windows in high-rise buildings, downed trees and knocked out power to hundreds of thousands of homes and businesses in the Houston area Thursday as Southeast Texas got pummeled for the second time this month. At least four people were killed due to the storms, the Houston Mayor's office told CBS News Thursday night.

Flash flood and severe thunderstorm warnings were issued for multiple counties, with damaging winds and even tornadoes possible into the evening, said Houston's National Weather Service office.

"Take shelter now if you're in the path of this storm. Head to the lowest floor!" the NWS office warned on social media.