Las Vegas hits record of fifth consecutive day of 46.1 Celsius or greater
LAS VEGAS — Las Vegas baked Wednesday in its record fifth consecutive day of temperatures sizzling at 46.1 Celsius or greater amid a lengthening hot spell that is expected to broil much of the U.S. into the weekend. The temperature climbed to 46.1 shortly after 1 p.m. at Harry Reid International Airport, breaking the old mark of four consecutive days set in July 2005. And the record could be extended, or even doubled, by the weekend. Even by desert standards, the prolonged baking that Nevada's largest city is experiencing is nearly unprecedented, with forecasters calling it "the most extreme heat wave" since the National Weather Service began keeping records in Las Vegas in 1937. Already the city has broken 16 heat records since June 1, well before the official start of…