Authorized Departure is initiated when the safety and/or security situation in a particular location has deteriorated significantly, and allows families and non-essential staff to depart on a voluntary basis.
Ordered Departure is initiated in extraordinary circumstances when the embassy or consulate is no longer confident of the security of its personnel and families. Implementation of this status mandates the departure of all non-emergency mission staff and employees.
The US Embassy Antananarivo Warden Message dated March 18 is here.
Meanwhile the DipNote folks have been busy with Twitter updates:
Related Post: Authorized Departure On for US Embassy Antananarivo
Update 3/20 10:56 PM: The Office of the Spokesman today released a statement of US condemnation of the coup d'etat in Madagascar and suspends non-humanitarian assistance. Full statement here.