jet stream is the key https://earth.nullschool.net/#current/wind/isobaric/500hPa/orthographic=-95.19,38.23,475 where will the jet stream be when Matthew travels north at a snails pace of 6mph The low swooping jet stream walking across the us... timing of the this and the snail is yet to be determined The size of it will have effects for hundreds of miles... huge waves, storm surge, rain, flooding, wind It's huge and carrying an enormous amount of precipitable water