The traffic jam that commuters experienced in upper Northwest D.C. Thursday morning was due to the pending arrival of President Barack Obama, who will speak at the funeral of civil rights leader Dorothy Height at the National Cathedral. 

Guests and security began arriving at the cathedral as early as 8 a.m. for the event, tying up commuter arteries around Massachusetts Avenue and Wisconsin Avenue, N.W.

Height was the longtime president of the National Council of Negro Women, and a recipient of the congressional gold medal. She died earlier this month at age 98.

According to the White House, First Lady Michelle Obama (shown here at the 2009 funeral of Sen. Edward Kennedy (D-Mass.)) will join the president for this event, making it a great opportunity for the first couple to drop in on daughter Malia at school; the campus of the Sidwell Friends School she attends is less than five blocks from the cathedral. The Obama's younger daughter, Sasha, also attends the Sidwell Friends School, but her campus is in Bethesda, Md.