More than 1,100 flights are delayed or canceled at Denver International Airport as a severe thunderstorm rolls across Colorado.

The Federal Aviation Administration issued a ground stop for DIA flights on Wednesday afternoon because of the storm, which was lifted as of 5:30 p.m.

There were 1,100 flight delays and 70 canceled flights as of 2:50 p.m., according to the flight tracking website FlightAware.

Flights headed to several East Coast airports are delayed by a range of 20 minutes to nearly 2 hours, including Logan International Airport in Boston; Reagan National Airport in Washington, D.C.; and Kennedy International Airport in New York City, according to the FAA.

Southwest Airlines had 369 delayed and 26 canceled flights, while United reported 327 delayed and nine canceled flights. SkyWest had 200 delays and 21 flight cancellations.

A severe thunderstorm is causing gusty winds up to 60 mph across metro Denver, National Weather Service forecasters said.

This is a developing story and may be updated.

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