The National Weather Service says a severe squall line capable of producing both tornadoes and extensive straight-line wind damage was located in the area.
I have chased tornadoes in the Southern Plains. I have chased storms in New Jersey. Even for trained spotters, one locale is way more challenging and dangerous.
At least three people were still missing on Sunday after torrential rain in Texas and Kansas flooded rivers, washed out roads and left four people dead.
Tornadoes destroyed homes, overturned vehicles and stripped the bark from trees as they churned across Oklahoma, part of a strong series of storms that hit the Plains.
As military helicopters ferry search and rescue teams over the Pacific Northwest, below them are scenes of devastation from a giant earthquake that could strike the region at any time.