noun
migratory anticyclone
A meteorological term for a high-pressure system that moves, typically bringing fair weather before being followed by a low-pressure system.
移動性高気圧に覆われて、全国的に晴れるでしょう。
Covered by a migratory anticyclone, it will be sunny nationwide.
春と秋は移
In spring and autumn, migratory anticyclones and low-pressure systems pass alternately.