– The "bombogenesis" storm now slamming the East Coast is nasty stuff, but at least forecasters aren't throwing around the phrase "acid snow." Quartz did a double-take upon hearing this weather report from Arirang News for Seoul, South Korea: "Please be sure to have an umbrella with you, as the snow that's falling in the central regions right now is acid snow, which is a mixture of snow and yellow dust." As this older story from i09 explains, "acid snow" is indeed real. And while it's less acidic than its "acid rain" counterpart, it can have a real effect on water and soil pH come springtime—a phenomenon known as "acid pulse."