The ongoing drought in the West means more water is being drawn from underground, some say at an alarming rate.
Phoenix under excessive heat warning
There's an excessive heat warning in effect, from 10 a.m. until 8 p.m. Wednesday.
Dan Leins of the National Weather Service says we could see record tying heat in metro Phoenix.
"Right in the urban corridor [and] right in downtown Phoenix, that's typically the hottest locations. It can also be pretty hot down toward Gila Bend. Pretty much the entire Phoenix metro-area is going to be hot today," Leins said Wednesday.
Authorities warn excessive heat exposure can lead to critical medical conditions such as a stroke, heart attack and even death.
Leins said it will be slightly cooler this weekend. He says we could see temperatures ranging from 105 to 109.