Well there’s a country that is damp and cold naturally so I have to wonder what their weather conditions have been in these last two years.
Oh, of course - there’s the culprit. Climate change!
The particular region where it started up...is ‘bunched-up’ against North Korea. I looked at the map...mostly a rural region...a few major cities. I don’t think floods were affecting the area much. One would think that North Korea has the problem already.