Based on the travel time map, and that the earthquake event was just 45 mi SW of Eureka, CA (and potentially closer to the coastline elsewhere), it seems that jumping straight to Tsunami Warning is the most appropriate messaging, given that the expected time to impact is quite short?
https://www.tsunami.gov/events/PAAQ/2024/12/05/so1aq0/1/WEAK...
(Some of my job requires me to deal with natural disaster public warnings; but not tsunami specifically)
(I'm late to the party. The warning has since been cancelled: https://www.nbcbayarea.com/news/california-earthquakes-tsuna...)