A flood watch issued for parts of Texas has been extended into Monday evening, leaving thousands at risk. The National Weather Service San Angelo office said on Sunday that flash flooding caused by excessive rainfall could occur in Heartland, portions of Concho Valley, Edwards Plateau and Hill Country until 7:00 p.m. on Monday.

When the precipitation intensified in the early morning hours Friday, many people failed to receive or respond to flood warnings at riverside campsites known to be in the floodplain.

Dozens of people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.