Igee Cummings walks through the snow Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Igee Cummings walks through the snow Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Robert Savannah and his daughter Sophia, 4, slide down a snow covered hill Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Alyssa Remi, 12, slides down a snow covered hill Monday, Feb. 15, 2021, in Houston.A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

A man peers out from under a blanket while trying to stay warm in below freezing temperatures Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Erasmo Vazquez walks through blowing snow Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Vehicles drive on snow and sleet covered roads Monday, Feb. 15, 2021, in Spring, Texas. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

A woman walks through falling snow in San Antonio, Sunday, Feb. 14, 2021. Snow and ice blanketed large swaths of the U.S. on Sunday, prompting canceled flights, making driving perilous and reaching into areas as far south as Texas’ Gulf Coast, where snow and sleet were expected overnight. (AP Photo/Eric Gay)

Cristina Lucero gathers snow while trying to build a snowman Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Alyssa Remi, 12, tries to keep warm while playing in the snow Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Erasmo Vazquez, right, walks along a snow covered sidewalk with his wife, Maria, center, and daughter Day, left, Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Diane Phelps, 54, walks along Main Street in Girard, Pa., during a morning snowfall on Monday, Feb. 15, 2021. A storm expected in northwest Pennsylvania and western New York region is predicted to drop up several inches of snow by Tuesday afternoon. (Christopher Millette/Erie Times-News via AP)

Ice hangs from a buildings fire escape in Downtown Cincinnati on Monday, Feb. 15, 2021. The National Weather Service issued a winter storm warning starting Monday and going through Tuesday with heavy snow expected. (Albert Cesare /The Cincinnati Enquirer via AP)

A wrecker crew works to remove a car from the median of Interstate55 in McComb, Miss., on Monday, Feb. 15, 2021. A winter storm dropping snow and ice also sent temperatures plunging across the southern Plains. (Matt Williamson/The Enterprise-Journal via AP)

Cristina Lucero's hands are covered in snow while building a snowman Monday, Feb. 15, 2021, in Houston. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)

Vehicles drive on snow and sleet covered roads Monday, Feb. 15, 2021, in Spring, Texas. A winter storm dropping snow and ice sent temperatures plunging across the southern Plains, prompting a power emergency in Texas a day after conditions canceled flights and impacted traffic across large swaths of the U.S. (AP Photo/David J. Phillip)