A powerful storm the National Weather Service says is "of historic proportions" stranded hundreds of people and left thousands without power Wednesday night after it intensified into a raging blizzard across the Plains. It brought with it hurricane-force wind gusts, widespread flooding and white-out conditions to multiple states from Colorado to the Dakotas.
Why it matters: This storm's strength and rate of intensification is unusual for the Plains states, with low pressure records likely to be challenged or broken in multiple locations. In general, the lower the air pressure, the stronger the storm.