A group from University of California, San Francisco, etc. has reported recently emergent SARS-CoV-2 variants in San Francisco Bay area from Nov. 2020 to Jan. 2021.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7941666/
In the Bay Area, it seems that B.1.427 and B.1.429 variants are dominant. Please refer to the figure below (L452R, S13I, W152C are major spike mutations). Additional studies are required to understand differences between those variants.
