U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.

Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.

The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

MaryAnn E. Tierney

MaryAnn Tierney
Regional Administrators

Regional Administrator

MaryAnn Tierney was appointed regional administrator for FEMA Region 3 in August 2010 and is responsible for leading FEMA’s efforts in the mid-Atlantic to help people before, during and after disasters. She served concurrently as acting regional administrator in FEMA Region 2 for 10 months following the devastation of Hurricane Sandy. From April to June 2017, she served as the acting associate administrator for Mission Support at FEMA headquarters.

Mrs. Tierney has extensive experience coordinating large, complex emergency response operations. At FEMA, Mrs. Tierney is responsible for leading the federal government’s response to all presidentially declared emergencies and disasters in the mid-Atlantic. In October and November 2012, she served as a deputy federal coordinating officer for FEMA in New York City in response to Hurricane Sandy. In November 2017, she deployed to Puerto Rico as the Individual Assistance branch director. She is a qualified federal coordinating officer and leads one of FEMA’s four National Incident Management Assistance Teams (IMAT).

From 2006 to 2010, Mrs. Tierney served as director of emergency management in Philadelphia where she oversaw a renovation of the program by developing emergency plans, building partnerships with private sector and community organizations, and providing the public ways to stay informed during emergencies.

Mrs. Tierney also spent over seven years with the New York City Office of Emergency Management, ending her tenure as assistant commissioner for Planning and Preparedness. During the city’s response to the attacks of Sept. 11, 2001, she held a key position coordinating debris management as well as the city’s application for federal funding.

Mrs. Tierney has served on the Department of Defense Reserve Forces Policy Board, the NFPA 1600 and has taught graduate-level courses on emergency management. She holds a Bachelor of Arts in political science from American University and a Master’s in Public Administration from New York University. She has also completed the Executive Leadership Program at the Naval Postgraduate School’s Center for Homeland Defense and Security, the Capstone Course for one-star General and Flag Officers, the Joint Flag Officer Warfighting Course, and the Pinnacle Course for two- and three- star General and Flag Officers.


Last updated Jul 21, 2020

Would you like to take a brief survey regarding your experience with fema.gov?