Washington Metropolitan Area Transit Authority will halt above-ground Metrorail service at 1 p.m. Saturday, December 19, 2009.  Thirty-nine station will be closed.

The underground Metrorail stations will remain open until 3 a.m., the normal closing time for a Saturday night. 

Metrobus service will also halt at 1 p.m. Saturday, December 19, 2009. 

For full details see Metro’s media advisory: 
http://www.wmata.com/about_metro/news/PressReleaseDetail.cfm?ReleaseID=4196