As the blockinghigh weakened, the easterly current below and the southerly current at the rear weakened. As a result, the precipitation system abated and moved both easterly and southerly.
In this paper, by the statistical analysis of the path, source and moving velocity-of the cold air, blockinghigh on the north of Baikal and Yakutsk was shown to be the main system of influence.
You must set up an airtight base defense immediately, blocking the two base access roads at their chokepoints (2 and 3) and putting defense on the high ground overlooking both chokes.