Floodwaters hit Houston

(NBC News) Tens of thousands of Texas residents are being told to stay inside after severe storms that left behind widespread flooding.

The attack from Mother Nature has been relentless, with high winds, hail and a deluge of rain, in some areas 20-inches of water or more.

Some of the most severe weather has been in Houston, where officials have declared a Level-Two state of emergency. Rescue teams have worked more than 100 calls in at least 70 flooded neighborhoods. Cars are stranded across the city, with hundreds along Interstate 45 shut down by the storm.

Power lines are also down, leaving thousands in the dark, including NBC affiliate KPRC, knocked off the air for several hours but still reporting online until power was restored at the station Monday afternoon.

Read more: http://nbcnews.to/1SnY7Ip