I have no idea what's going on but I started the map 3 more times, seems to be consistent that I get about 3 disasters by sol 25 on 58S108W.
First run I got 3 disasters by sol 13
Second one I got 2 disasters by sol 20, and the disasters overlapped which killed my colony because I wasn't prepared for a cold wave and dust storm together at the same time.
Latest one I got 2 disasters by sol 12 (cold wave and meteor storm)
Am I wrong in thinking that this seems harder than it should for level 1 disaster maps?
I attached the latest save file I have. I do have about 45 mods enabled but none of them should affect disaster generation. Most of them are QOL or UI stuff.
You are right in your understanding. 1-disaster maps should never have cold waves or dust storms. It does have occasional meteors and dust devils.