Dangerous heat wave heads toward California, Arizona and Las Vegas

Temperatures could soar to 112 degrees in Las Vegas, Phoenix and Palm Springs.

A dangerous and possibly record-breaking heat wave is heading west this week, affecting California, Arizona and southern Nevada, including Las Vegas.

An excessive heat warning begins Tuesday for the California Valley region, with temperatures up to 108 degrees possible from Redding to Sacramento to Fresno and Bakersfield.

An excessive heat warning will extend from Las Vegas to the Lake Havasu City, Arizona area on Wednesday.

By Thursday or Friday, the temperature is expected to skyrocket to 112 degrees in Las Vegas, Phoenix and Palm Springs, California.

If Las Vegas exceeds 110 degrees on Thursday, it will be the earliest June the city has ever been this hot.

And if Phoenix exceeds 111 degrees on Thursday, the city will break a daily record set in 2016.

Reno, Nevada, and Fresno, California, will also hit daily records on Thursday.

This weather is considered a major thermal risk; Overexposure can cause heat cramps and heat exhaustion and, without intervention, can lead to heat stroke.

Farther north, temperatures could reach the mid-90s in Salt Lake City and Boise, Idaho.

Click here to learn what you need to know to stay safe in the heat.

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