A man died and another was in hospital is a serious condition as a heatwave has blistered parts of the US.
Forecasters said temperatures in Las Vegas shot up to 46 C (11 F) yesterday, two degrees short of the city's all-time record.
Phoenix hit 48.3C (119F) by mid-afternoon, breaking the record for June 29 that was set in 1994. And large areas of California sweltered under extreme heat warnings, which are expected to last into Tuesday night.
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Areas of dense freezing fog across the south-east could cause flight delays until at least 10.30am, according to forecasts.