Heavy snowfalls are expected across Japan over the weekend as the weather agency issued a warning Friday for many regions on the Sea of Japan coast as well as some mountainous areas on the Pacific side.The Japan Meteorological Agency said that with strong cold air masses approaching the archipelago, even some plain areas near the Pacific coast could have snow, and asked people to be aware of icy roads and disruption of public transportation.Some locations along the Sea of Japan could also have thunderstorms and tornadoes, the agency said.A cold air mass with a temperature of minus 39 C or l…READ FULL ARTICLE