(AP)—Tigers at the Phoenix Zoo are getting frozen fish snacks. Temporary cooling stations are popping up. And airlines are monitoring the soaring temperatures as the western U.S. falls into the grips of a dangerous heat wave.

A strong high-pressure system settling over the region Friday and through the weekend will bring even to the typically blazing Southwest.

Death Valley in California is forecast to reach 129 degrees, not far off the world-record high of 134 logged there in 1913.

Temperatures are expected to soar even as far north as Reno, Nev., across Utah and into parts of Wyoming and Idaho, where are calling for triple-digit heat in the Boise area through the weekend.