The Federal Aviation Administration issued a ground stop at Baltimore-Washington International Thurgood Marshall Airport until 6:30 p.m. due to the severe weather affecting the Baltimore metro area. A ground stop is a measure taken by air traffic control to halt flights destined for an airport at their point of origin, usually for weather-related issues. The FAA could extend the ground stop if the severe weather continues. READ MORE:Severe weather causes ground stop at BWI-MarshallCHECK OUT WBAL:Get all the latest Baltimore news, weather and sports. WBAL-TV brings you the best in Maryland news online, anytime.