It must be winter-growing-aloe-bloom-season in the Bay Area!
Aloe africana is an African Aloe also known as African Aloe. It’s from South Africa, of course. The Eastern Cape. These are some very orange flowers. The plant itself is a single-stemmed, generally solitary tree aloe to 10ft. tall. The marginal spines are vigorous, though not so large or numerous as to be hazardous.