Any coastal area has the potential to be struck by a tsunami but out of the options you provided Alaska is definitely at most risk.
This is because Alaska is facing what scientists call a megathrust (subduction zones) in which almost three quarters of all tsunamis tend to occur.
Fun Fact: The largest tsunami ever recorded was in Alaska with waves reaching a whopping 1720 feet high (524 meters)!
D. Bilbo fears all Wargs because they are allies of the goblins. He is assuming that every Warg is out to get them because they are not aligned with the goblins and the Wargs are.
In Chapter 7 Moonshadow went to visit Mrs. Whitlaw to educate her on demons. Moonshadow was impressed that Mrs. Whitlaw seemed to be interested in other people. He explained about the dragons and was impressed with the knowledge he possessed and she could see his point of view. After his visit, Moonshadow came home thinking that demons weren't that bad.