 The warning for excessive heat has been extended through Thursday here in southwest Arizona. In Yuma today, the high could reach 117 with 5 to 10 mile per hour winds. Tonight's low for Yuma around 84. Some hazy conditions in Parker with a high near 120 today. Winds 5 to 10 miles per hour. The low tonight for Parker around 83. Welcome to NewsHour from the BBC World Service. I'm Paul Henley in London.