Philadelphia FEB federal agencies are OPEN.  Please check with the individual agency regarding their status. 

Washington, DC area operating status:  https://www.opm.gov/policy-data-oversight/snow-dismissal-procedures/current-status/

View the Governmentwide Dismissal and Closure Procedures at this link:  https://www.opm.gov/policy-data-oversight/pay-leave/reference-materials/handbooks/dcdismissal.pdf