Ok, from those maps, it seems that unless a storm comes in North of the Antilles on a rather oblique angle, or is sufficiently strong enough, Florida (at the time of these maps) is shielded. Emily's current strength predisposes her to the control of the 850mb map, which seems to sling her right towards the Yucatan, and if she deepens in a hurry (+30mph winds in a day, like today) she'll head more towards Central America, but in her current position, the streams could present a shearing effect, placing a damper on her strength development.
If I'm reading these correctly, and I think I am, the Isotachs are like Isobars, read a bit like a topo map. The closer the lines are together, the "steeper" the differential is. If she doesn't pick up strength, she'll accelerate towards the Yucatan, and by force of inertia, most likely end up crossing it and end up impacting Texas as a TS or low Cat 1.
Like you said, the question requires a Met to be answered authoritatively, but those maps have definitely given me an insight as to the atmospheric "powers that be."
Thanks.
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Re: Could Emily go the same way as Charley?
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