Authorities said the conditions are expected to "contribute to a significant spread of new and existing fires", amid days of blazes across the states of California, Oregon and Washington that have destroyed neighbourhoods and forest land, leaving barren and grey landscapes the size of New Jersey, Aljazeera reported.

Axar.az reports citing foreign media that at least 10 people have been killed in the past week throughout Oregon. Officials have said more people are missing from other blazes, and the number of fatalities is likely to rise. Twenty-two people have died in California since early August, and one person has been killed in Washington state.