These vessels can sit out or avoid storms just fine. They are not abandoned hulks, they have plenty of fuel onboard and an active crew. Weather systems in this area don't develop from nowhere, they originate in the far west and can be seen and their movement predicted a long time in advance. These ships can travel hundreds of miles in the days before a serious storm arrives where they were.

It's already causing an ecological disaster called climate change. We must go net carbon negative now, or ecocide and omnicide will be certain. Spilling oil would be comparatively trivial.

When is the storm season in that area?

Unlikely off California. Tsunami perhaps if the big one hits.