The development of the geosystems of the Russian Far East proceeds under the enormous but contradictory in nature double influence of the continent and the ocean and is carried out through the atmosphere. The goal is to characterize hazardous natural phenomena depending on the differentiated natural tension of the Far East (from maximum in the south to moderate in the north), often causing disasters and creating tense levels of the geoecological situation in general. The article presents comparative-geographical, geophysical, informational methods, as well as author’s development, etc. Further strengthening of the natural continentality of the entire region climate predetermines a directed increase in the geosystems development of the role of hazardous natural processes. If a sharp anthropogenic climate warming occurs, an accelerated rise in the level of the World Ocean is possible, which will cause increased abrasion, avalanches and landslides in the coastal zone. In case of a persisting general cooling, a general extremalization of the entire natural environment will occur. Crisis situations are, to a certain extent, predictable, which can help in optimizing rational nature management.