A heat dome is expected to bring scorching, triple-digit temperatures to the Southwest starting Tuesday as more than 25 million Americans will be under a heat alert issued by the National Weather Service.
The heat dome — a natural phenomenon caused by hot air being trapped over a region — is settling around central California, southern Nevada and western Arizona, with temperatures expected to be 20 degrees above normal, Fox Weather Center told The Post.
The heat dome is expected to linger until Thursday, with Las Vegas and Phoenix forecasted to see 111- degree heat by Wednesday — temperatures normally not experienced by those cities until late summer.
Parts of the Las Vegas metro are under a Level 4 heat advisory through Friday, which warns of severe health impacts or even death caused by extreme and prolonged exposure to the heat.
Fresno, CA, is also expected to experience triple-digit heat by Friday, even as the heat dome dissipates over the region, meteorologists said.
The three-day ordeal, however, could very well last through the weekend, according to Fox Weather Center.
Experts also warn that the heat will stick around at night, erasing the hope that residents might cool off after the sun sets.
Heat advisories have also been issued for parts of Utah, New Mexico and Texas.
National Weather Service meteorologists are urging residents in those areas to stay hydrated and out of direct sunlight.
Last summer, more than 2,300 people died due to the effects of excessive heat in the US, the highest in 45 years of record keeping, according to an Associated Press analysis of CDC data.
