What meteorologists call a "convective heat burst" sent temperatures skyrocketing early this morning in Siouix Falls. 

Temperatures rose rapidly from the lower 70's to 101 degrees between 4:15 and 4:45 a.m. 

A heat burst occurs when warm air from 10,000 to 20,000 feet above the surface is forced to the ground. 

The heat burst also brought strong winds that knocked down some power lines and trees in the Sioux Falls area.

Weather Blog