The 19th Expeditionary Weather Squadron is an inactive unit of the United States Air Force. It last performed weather related duties as part of the International Security Assistance Force in Afghanistan from 2009 to 2014. It was assigned to the 504th Expeditionary Air Support Operations Group. The squadron was first active during World War II where it served in Africa. Following the end of the war, it was stripped of personnel and equipment, but remained on the active roll until 1947. The squadron was reactivated in 1948 and provided weather services from various bases in the midwestern United States until inactivating in 1961 .