The familiar color-coded terrorism alert system is being discontinued in favor of a new system: the National Terrorism Advisory System (NTAS), Department of Homeland Security Janet Napolitano said yesterday.

Over the next 90 days, NTAS will be implemented so DHS and the federal, state, local, tribal, community and private sector partners can transition to the new system, the department said.

“Security is a shared responsibility, and we must work together to keep our nation safe from threats,” Napolitano said. “This new system is built on a clear and simple premise: when a credible threat develops that could impact the public, we will tell you and provide whatever information we can so that you know how to keep yourselves, your families and your communities safe.”

DHS believes dropping the Homeland Security Advisory System in favor of a new system will more effectively communicate information about terrorist threats by providing timely, detailed information to the public, government agencies, first responders, airports and other transportation hubs, and the private sector.

The color-coded HSAS was first introduced on March 11, 2002. In July 2009, Secretary Napolitano formed a bipartisan task force of security experts, state and local elected and law enforcement officials, and other key stakeholders–co-chaired by Fran Townsend, former Assistant to President George W. Bush for Homeland Security, and Judge William Webster, former director of the Federal Bureau of Investigation and Central Intelligence Agency–to assess the effectiveness of HSAS. The results of this assessment formed the basis of the National Terrorism Advisory System.

Under the new system, DHS will coordinate with other federal entities to issue formal, detailed alerts when the federal government receives information about a specific or credible terrorist threat. These alerts will include a clear statement that there is an “imminent threat” or “elevated threat.” The alerts also will provide a concise summary of the potential threat, information about actions being taken to ensure public safety, and recommended steps that individuals and communities, businesses and governments can take.

The NTAS alerts will be based on the nature of the threat: in some cases, alerts will be sent directly to law enforcement or affected areas of the private sector, while in others, alerts will be issued more broadly to the American people through both official and media channels–including a designated DHS webpage (

http://www.dhs.gov/alerts), as well as social media channels including Facebook and via Twitter @NTASAlerts.

Additionally, NTAS will have a sunset provision, meaning that individual threat alerts will be issued with a specified end date. Alerts may be extended if new information becomes available or if the threat evolves significantly.

Napolitano announced the change during her State of America’s Homeland Security address at the George Washington University Homeland Security Policy Institute.