Weather tracker: Severe storms grip US as snow, ice and deep freeze spread

Warnings issued across 26 US states, while Portugal braces for heavy rain as Storm Joseph rolls in

The US is enduring another bout of severe winter weather, as a succession of powerful weather systems brings heavy snow, freezing rain and extreme cold temperatures across much of the country.

Twenty-six states, from Texas to Massachusetts, were under storm warnings issued by the National Weather Service over the weekend, with many alerts remaining in place this week.