Scorching heat keeps grip on Southwest US as records tumble and more triple digits forecast

Read MoreThe first heat wave of the year is expected to maintain its grip on the Southwest United States for at least another day as record-setting temperatures continue to soar past 110 degrees Fahrenheit from southeast California to ArizonaThe first heat wave of the year is expected to maintain its grip on the Southwest United States for at least another day as record-setting temperatures continue to soar past 110 degrees Fahrenheit from southeast California to Arizona