I'd start with storms and build up as the players advance in the scenario and the planets align themselves.
So storms, flooding, light earthquakes, tsunami, strong earthquakes, ...
We play in french with english game terms. Sometimes some explanations are also needed in dutch or english, according to the players around the table.
The DMs I know all use the english books (sometimes hard to find) but most of the players use french translations. This sometimes leads to...
Re: A question?
Outer walls should be 25 feet at the bottom and 10 feet at the top. Inner walls around 5 feet wide. I'll draw a sketch later (or scan one).
After talking to a friend who is specialised in medieval history, I must go along with Tonguez.
Caravan and main road: 20 feet
Roads with...
IMO one trade route comes from the NW and one from Kul Moren.
They split in Mor's End, one going to the SE and one to the SW (road or ships). The intersection of two major trade routes is good for business.