Don't know about the Bay Area but where I live they've declared a judicial emergency and shut down most of the courts. It might violate the right to assembly but you're unlikely to get a judge to hear your argument until after the order has been lifted.
“The Court’s postponement of argument sessions in light of public health concerns is not unprecedented. The Court postponed scheduled arguments for October 1918 in response to the Spanish flu epidemic. The Court also shortened its argument calendars in August 1793 and August 1798 in response to yellow fever outbreaks.”
For the Federal Goverment: https://en.wikipedia.org/wiki/Public_Health_Service_Act
The list (for the federal government) of diseases is managed via Executive Order [PDF] https://www.govinfo.gov/content/pkg/FR-2003-04-09/pdf/03-883...
The CDC also has a link to this: https://www.cdc.gov/quarantine/aboutlawsregulationsquarantin...
These measures have precedent, so good luck in getting these overturned.