The jet stream in this region splits into the southern subtropical jet and the polar jet.
The front was enhanced by a strong jet stream and warm, humid air ahead of it, allowing thunderstorms to develop.
One of the major causes of the often heavy downpours is the position of the jet stream.
The strong temperature contrast between polar and tropical air gives rise to the jet stream.
These fronts usually move from west to east as they track along the jet stream.
Another system involving the northern branch of the jet stream merged with the initial storm, causing another coastal storm to develop.
On the equator side of the jet stream, in the middle layers of the atmosphere, is the high pressure area.
Spring and fall are usually mild, but conditions are widely varied, depending on wind direction and jet stream positioning.
