The National Weather Service placed a dozen Colorado counties under a tornado watch until 9 p.m. Monday after forecasters warned of tornadoes and softball-sized hail across the state. Affected areas can also expect winds of up to 50 mph and with up to 75 mph gusts.
The alert has disrupted operations at Denver International Airport, with two flights cancelled by 4 p.m. FlightAware confirmed more than 300 flights were also delayed.
