Temple, northeast of Austin, declared a state of emergency and opened a shelter for displaced people after a twister caused widespread devastation.

Pictures from Greenfield, Iowa, show entire streets turned to wreckage, amid piles of debris, broken trees and demolished cars.

Videos of the incident on social media showed people screaming, running away and climbing out from under metal poles.

Miami's heat index has already smashed the previous record ? and it's only May.

The number of deaths after what a state police official called a "devastating tornado" hit Greenfield and the surrounding area was not clear. Another person died in nearby Adams County.

In the state of Tabasco, temperatures are forecast this week to surpass 113 degrees Fahrenheit.

Nearly 200,000 customers remained without power in southeastern Texas, days after the deadly storm.

Electric utility CenterPoint Energy estimated 80% of its affected customers would have power restored by Sunday evening as the region faces another warm day.

Nearly 550,000 homes and businesses remained without electricity in Texas early Saturday as the National Weather Service warned of temperatures soaring to around 90 degrees.

Houston Mayor John Whitmire said strong winds downed power lines, spread debris and left many roads impassable.

In addition to flooding, severe thunderstorms are forecast for many of the same locations under flood watches, including cities like Dallas, Houston and Lake Charles, Louisiana.