If you're weathering the storm in a slip:
Make sure your mast is several feet offset from the sailboat next to you - slide a few feet forward in your slip if necessary. When the boats get to rockin', you don't want your masts to tangle.
Tie your lines
to stringers or pilings, not dock cleats
which can easily pull out. And make them long to account for surge - if possible go 2 or 3 slips over.
If you're spidering to cleats
on your boat, and have 2 or more lines
on one cleat
, make sure they will pull in different directions so you don't overload.
Keep your mask & snorkel handy, you won't be able to breathe in the wind and rain.
I've herard some dispute over how to face - one reliable old salt I know always goes bow-out so he can make a quick getaway if necessary. Another equally-wise one puts his bow to the expected direction of greatest wind. You know your boat & your location, make your own judgement.