Bombogenesis happens when "a midlatitude cyclone rapidly intensifies, dropping at least 24 millibars over 24 hours," according to NOAA. This extreme and rapid change in pressure forms a very strong storm, a so-called "bomb cyclone."
Bomb Cyclone is not an official term. Meteorologists and scientists use "bombogenesis."
According to AccuWeather, these storms occur most commonly off the east coast and the most common recipe for it to form is "cold air along the land, warm air over the water."
Bomb cyclones happen almost every winter, but this week's storm has the potential to be historic for April, according to the Twin Cities National Weather Service.
A potentially historic storm will arrive late Wednesday, bringing a variety of precip types, strong wind gusts in excess of 50 mph, and very heavy snow totals. The snowfall gradient near the metro may end up tighter than currently shown. Prepare now for a severe winter storm. pic.twitter.com/cr6KxLgUY5— NWS Twin Cities (@NWSTwinCities) April 9, 2019
These types of storms, which can see snowfall rates of 2-4 inches per hour, have the potential to bring travel to a standstill.