from what I can see, the Atlantic high pressure system moved further west in Frances wake, but she left a noticeable weakness in the ridge, which may or may not guide Ivan straight into Tamp/Port Charlotte area AGAIN.
the high pressure is also building in from the west to EEast forming a barrier over Texas and Louisiana, which means we arentl ikely to get Ivan under the current setup. I see yet another squeeze play occurring in which Ivan getsl iften northward as the ridge to his east weakens under Frances' passing, and then is guided into Florida as the trough of low pressure behind Frances moves west with the ridge. This all soundsl ike babble and it probably is, but thats how Im reading it.
