Officials in Houston warn of ‘catastrophic’ flooding as heavy storms slam region

Flood watch in effect through Sunday with evacuations in some areas as more rain forecast for already soaked region

The Houston area was under threat of worsening flood conditions on Saturday, a day after heavy storms slammed the region - and authorities warned those in low-lying areas to evacuate ahead of an expected catastrophic" surge of water the likes of which haven't been seen since Hurricane Harvey.

A flood watch remained in effect through Sunday afternoon as forecasters predicted additional rainfall on Saturday night, bringing another 1-3in (2.5-7.6cm) of water to the soaked region and the likelihood of major flooding.