Story highlights At least one person died as a result of storms in Illinois, an official says

A hospital in Rochelle, Illinois, is in "disaster mode," a spokeswoman says

Fire department: Rescuers searching for trapped victims in Kirkland, Illinois

(CNN) Tornadoes tore through parts of Iowa, Illinois and Ohio on Thursday in what forecasters from the National Weather Service warned is a "particularly dangerous situation."

People across the Midwest should be on alert for severe weather, the weather agency said.

One person has died as a result of storms in Fairdale, Illinois, said Patti Thompson, a state emergency management spokeswoman.

In Rochelle, Illinois, there were "multiple reports of injuries and damage," the Ogle County Sheriff's dispatchers said.

A video of the storm on YouTube showed a massive twister barreling across an open field.