#332 Postby chaser1 » Sat Aug 14, 2010 4:28 pm
Hey there! Am typically posting more over at Flhurricane forum, but not nearly as active as here. Others here, I see from Weather Underground......
I strongly beleive it to be far premature to immediatley write off the next 2 or 3 waves coming off Africa during the upcoming week. In fact, the models have been consistantly trending more westward prior to today's 12Z run. In fact, upon close examination of last night's GFS 0Z run 500mb, and then comparing the same 500mb setup from today's GFS 12Z run, there is absolutly no way do I believe that the wave in question, will practically drift or limply move Westward at less than 10 knots, given it's position just under the southeast corner of a 594 ridge to its north and west. I could well be wrong, however many factors here are at play. Timing and speed of motion not the least of them, prior to even mentioning the GFS typical overplay of mid latitude troughs.
Even if such a system were to initiate off the African Coast as far north as 15-18N, short of an obvious trough, climatology would certainly indicate such a new surge to push a system westward at a decent clip, if not even WSW to begin with. Having faith in most of the models as I do, I think it prudent to sit back and look at longer trends, than any one single model run. It will not surprise me at all, for the 0Z run tonight to start to lean more south and west again. If and when I see mid level and upper air charts being fairly consistent, and then approaching 72 hours from verification - only then can I "almost" assume a foregone conclusion.
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Andy D
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