As far as tracking goes:
Posted by
Cape_Fear_NC on 8/19/2009, 11:14 am
As far as tracking is concerned; that's fairly easy:
Highs are the Kings of the atmosphere. Lows travel in paths around the Highs.
Because our Highs in the Northern Hemisphere rotate clockwise, storms on their southern periphery will track westward (despite the coriolis force which is trying to drive the storm northwards.)
Once there is no more High north of the storm, the coriolis force will drive the storm northwards until the "westerlies" drive it eastwards.
If a High were positioned in the Atlantic in such a way as to drive a hurricane into the East Coast - the hurricane would have no choice but to hit the East Coast. But we don't have that condition this week.
To be a bit more technical; a trough (elongated Low stretching from the Great Lakes to the deep south) in the middle and upper levels of the atmosphere is moving towards the coast (it will replace the High you see there now.) This will produce strong mid and upper level steering currents that will drive the hurricane north and then northeastwards before it can reach the U.S.
Tim in NC
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