The site will be updated at 6:00 AM when
inclement weather and/or an emergency has occurred.
The American Center for Physics will
be open with normal business hours.
Because weather and driving conditions may vary
significantly across the Washington, DC region, each employee must make his/her own decision about roadway conditions for
traveling. In cases of questionable weather, each society has implemented a liberal leave policy, which means that individuals
may decide to use their accumulated vacation time in cases when the building is not closed. However, if you decide to
use a vacation day and not come to work when the building is open, you should call your office to inform your supervisor that
you wish to use your option of liberal leave.