 I'm Stacey Lynn. Extreme heat is blanketing much of the country, and it's going to stick with us for a few weeks. Here's CBS's Adriana Diaz. From the Mexican border all the way up to Canada, temperatures are soaring. The high heat creating a tinderbox for wildfires out west. In California records, more than a century old could melt. While along the Texas coast, preparations and some evacuations are underway for Tropical Storm Beryl. It could strengthen into a hurricane by the time it hits the U.S.