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