Another option would be to walk west over the hills to the coast and then south, before the fires get bad. At least the population density and the smoke from the fires won't be so bad; the higher elevation could keep you out of the tsunami's reach. You might have trouble with the San Andreas chasm, but after that it should be easier.

Do you hike those hills? If you don't, it might be a good idea to start, it looks very scenic on Google Earth. There are small roads that cross with no buildings to collapse. Four or five hours and you'll be on the beach, assuming it hasn't moved. That's where I'd look for a storage unit (This would be a major kit to include a small off-road motorcycle or at least a mountain bike (bicycle).)