There has been a fair bit of discussion lately about how the forest/wildfire missions are very rare to generate. That to me sounds as if they control the percentage chance of a mission appearing, therefore the frequency of earthquake missions need to be reduced dramatically.
Nearly all other missions have times where they don't seem to appear, yet I am constantly seeing earthquakes. Why are there so many? If anything, they should be some of the rarest missions, given not everywhere sees them - and they are unlikely to be of high magnitude very often. So, can these missions please be addressed?