Denver International Airport under severe thunderstorm warning

4:11 p.m.: Severe weather is causing turbulence at Denver International Airport, with all inbound flights being held at their origin airport until 5 p.m. mountain time, according to FlighAware.com. Arriving flights are averaging delays of up to 45 minutes, and increasing. There have been 424 total delays at DIA today.

4:05 p.m.: A severe thunderstorm warning in effect until 4:15 p.m. has been issued for the north metro area to include Brighton, according to the National Weather Service. Forecasters expect 50 mph winds and quarter-sized hail.