By Michael Pearson and Greg Botelho, CNN
David Reyes, left, and Shavaar Hanes take a break from posing for photos with tourists as the Mario Brothers along the Las Vegas Strip on June 28.
(CNN) -- If you think a place called Furnace Creek would be hot in the summer, you're right. The town in California's Death Valley is expected to hit 128 degrees Saturday.
And the heat will stay on full blast through Tuesday, at least. At night, the mercury will drop to a refreshingly cool 96 degrees.
Fun aside, the heat wave scorching the Southwest is dangerous, as 170 concert goers found out Friday evening in Las Vegas, according to the fire department.
Ambulances plucked them out of 110 degree heat in an open air musical venue and drove them to a shady spot, where they could sit down and drink water.
An additional 30 people were treated for heat ailments in local hospitals.
The temperature in Las Vegas hit 113 degrees Friday, just shy of the city's heat record of 115, CNN affiliate KLAS reported.
"I'm not worried as much about the people who have lived here a while," said Sgt. Troy Stirling, police spokesman in the Lake Havasu, Arizona, near the California state line.
"It's more the tourists coming into the area, even from Southern California, who aren't used to this kind of heat."
Civic and emergency officials throughout the Southwest say that if there was ever a time to worry, this would be it. The reason isn't just the oppressive heat that is plaguing the region: It's the fact it is expected to hang around, and possibly even get worse, over the next few days. ...more