A giant hole, measuring 66 yards in diameter, was discovered in Siberia, and its cause remains a mystery.
Damaging thunderstorms and possible tornadoes for the western Prairie region Thursday.
As Matmo moves across Taiwan, another tropical threat is already brewing near Guam.
A pattern of extremes is once again unfolding across the country over the next week, with two shots of cool air interspersed with intense heat.
Heavy thunderstorms to bring some locally damaging wind gusts. Tornadoes for Canada! It's the season for them!
The cold front that will cut off the heat will generate strong gusty thunderstorms as it moves southeastward today. The National Weather Service Storm Prediction Center highlights the most likely area for these severe thunderstorms today and tonight.
Severe storms rumble through the Great Lakes, while downpours continue across the Southeast.
Storm Clouds Over Guadalupe taken by "Jeff Fennell" on 7/19/14. Upload to http://photo.accuweather.com to qualify!
High heat has a foothold west of the Mississippi but will struggle to surge east. Eventually, the heat will get beaten down even in much of Texas.