Mandatory evacuations in Arizona and New Mexico with Pagosa Springs warned of potentially ‘catastrophic’ deluge

Heavy rainfall produced flash flooding and mandatory evacuations in a swath of the south-west on Sunday, including in a Colorado tourist town bracing for its main river to rise to historic levels, as weary residents in the normally arid region deal with another drenching.

Officials in Pagosa Springs, a town of more than 2,000 in the Rockies located near ski resorts and known for its hot springs, warned of potentially “catastrophic flooding” as the San Juan River was forecast to crest at more than 20ft (6.1 meters) late on Sunday night.