evidence: Temperature records are shattered as extreme heat grips the West and East coasts [...] Several locations in Oregon shattered records by more than 5 degrees, topping out at 112 degrees in Medford, breaking the previous high of 104 set in 1922. [...] Kingman, Ariz., broke its daily high temperature record by 1 degree at 109 degrees. Death Valley, Calif., also broke its daily record by 1 degree with a reading of 128, 2 degrees below its all-time high of 130. And Las Vegas tied its daily high of 115 degrees.