Half of Phoenix, Arizona, would go to the ER if there's a blackout during a heatwave, a new study says.
The research, published today, estimated that around 800,000 residents would need emergency care for heat-related conditions like heat stroke.
If a blackout left citizens without those systems, a heat wave would have dire consequences, the researchers found.
The study involved modeling outdoor and indoor temperatures and daily activity patterns for residents, as well as looking back at historical heat wave events in Phoenix.
The city saw record-breaking temperatures in April of this year, according to local weather reports.