Iowa Weather Before Caucuses, Ames, USA - 14 Jan 2024
A tree covered in ice as a result of steam exhaust from a BASF chemical plant in Ames, Iowa, USA, 14 January 2024. Republican presidential candidates have been campaigning in the state before Iowa's first-in-the-nation caucus on 15 January; temperatures in the region have dropped to dangerously cold levels due to an arctic airmass, conditions that are expected continue into Monday and may affect voter turnout.