Texas will be hit by catastrophic and life‑threatening flooding.
The US National Hurricane Center has warned as Tropical Storm Harvey moves inland.
Harvey battered the coast as a category four hurricane ‑ the biggest to strike the US mainland in 13 years. It has now been downgraded.
Some residents are feared to be trapped in collapsed buildings and there have been widespread power outages.
Torrential rains are expected for days. There are no confirmed fatalities.
The storm slammed into Texas with winds of up to 130mph.
Earlier, Harvey made a double landfall: north‑east of the city of Corpus Christi initially, then just north of Rockport a few hours later.
When the storm struck close to Corpus Christi it had winds of up to 215km/h.
It was moving at an extremely low speed ‑ 2mph.
Source: BBC
