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Posted by Ray
on 11/6/2009, 6:16 am
69.205.81.50
With four lovely late fall wall-to-wall VFR days obviously coming up, what's left for a soaring forecaster to do? Same as always...check out the time evolution of the wind field, all 3 dimensions. Vaguely yet discernibly, today and Sunday are synoptically similar to Saturday and Monday. The first two being better soaring days than the latter two, and Sunday the best of all four. Way up (300 mb) sits a big ridge moving ponderously thru the time period, while lower (850-700 mb), a little trough comes skipping by on Saturday. Saturday will feature enough south wind to make us think seriously about switching ends. The point, but not the ridge, will be working, if thrashing about in a small gaggle is your bag. Probably some high clouds coming by as the dry, weak cold front passes. Also, probably, no wave over 390, with winds at 3 K actually stronger than at 6 or 9K. On Sunday however, people could do modest tasks, e.g. silver distance in the 1-26, and a hell of a lot farther in glass. The days are short now, but there aren't many green leaves left. So for a few hours, you can really scoot. Then on Monday we'll be back to Friday, more or less.
Ray
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