Bombogenesis is defined by a storm dropping by 24 millibars of pressure in 24 hours. Such a drop in pressure indicates rapid intensification of a storm, which is why such events are labeled with a dramatic term.
Yesterday's 11pm advisory on Joaquin estimated pressure at 990mb, and tonight's came in at 951mb (and dropping). The EURO model still parallels the coast without making landfall, but every other model takes it onto the coast this weekend anywhere from NC to the NE. Even without landfall, there will be a Major flooding event in the mid atlantic to NE. A landfall stands a good chance of making this the most significant weather event in the US since Sandy in 2012.
Yesterday's 11pm advisory on Joaquin estimated pressure at 990mb, and tonight's came in at 951mb (and dropping). The EURO model still parallels the coast without making landfall, but every other model takes it onto the coast this weekend anywhere from NC to the NE. Even without landfall, there will be a Major flooding event in the mid atlantic to NE. A landfall stands a good chance of making this the most significant weather event in the US since Sandy in 2012.