Watch a video from inside of a tornado that touched down near Bashkortostan, Russia, on August 29.
AccuWeather.com Meteorologist Jim Andrews said low pressure was tracking northeast just west of the area at midday on August 29.
"This area would have the atmospheric spin of the kind that you would need for a tornado," he said, adding the dew point was high.
"There was plenty of moisture and it was warm enough," he said, referring to the ingredients to spawn a supercell thunderstorm and tornado.
The threat for severe weather, including tornadoes and flash flooding, will expand across the central United States through the end of the week.
An area of showers and thunderstorms near the Bahamas has the potential to develop into a tropical system and impact part of the East Coast of the United States during Memorial Day weekend.
This weekend will be the biggest racing weekend of the year with three major races drawing in millions of viewers from around the globe.
This summer, the pattern responsible for extensive drought and heat in southeastern Asia will break down enough to bring relief to some nations, while the tropics spring to life for a time.
As millions prepare to take part in Memorial Day weekend events, showers, storms and a potential tropical system could threaten outdoor activities and travel plans during the extended weekend.