New Office of Personnel Management (OPM) Dismissal Procedures for incidents within the Washington, D.C. area are posted.
These procedures are broad in nature with much of the decision-making being left to individual agency management, and the employee on decisions for early dismissals to decrease the number commuter traffic issues in a major incident that effects federal government, city, and community operations.
The shelter-in-place (SIP) guidelines should be of particular importance for individuals that would rather ride out the storm in a safe and secure location.
For individuals with children these procedures become even more complex for custodial, and non-custodial parents.
In any case remember safety is the key factor.
This procedure can also be accessed at https://www.opm.gov/oca/compmemo/dismissal.pdf .