If you have not yet done so, alert your students that your course will be moving online. Learn more about how to convert your course online.
Discuss with them how they should expect the class to continue in the event of disruption. If you are likely to make adjustments to the expectations outlined in your syllabus, be as clear as you can about this.
Ensure students know how to access support. SDCCD's Online Learning Pathways site provides excellent support to both students and faculty.
Communicate your flexibility and desire to help students succeed. Ask students if they have sufficient technological access to continue with class activities that might shift online, and consider options for students who express concern.
Consider giving an opportunity for students to practice with a technology that you or they may not have used before, such as turning in an assignment through Canvas or holding a live online session in Zoom, before they are actually forced to do so.