Springfield was under a winter storm warning as of 9 a.m. Saturday and goes until midnight Sunday night, the National Weather Service said. The city of Springfield declared a snow emergency, starting Saturday, Jan. 24 at 7 a.m. The snow emergency will end at noon on Monday, Jan. 26.

Arizona is expecting unsettled weather with rain and high-country snow through the weekend.

Thundersnow is typically associated with very heavy rates of snow, which can lead to reduced visibility.