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November warmup 11/5 - 11/10


SACRUS

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Last few runs of the ecm, gfs, and associated ensembles continue to advertise a warm up next weekend into the week of the 7th. How strong and long the period lasts is still in question, but perhaps a bit of Indian Summer a week after our October snowstorm. Strong trough digging into the west coast with ridge building into the east.

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If so, then we're right on track as far as I'm concerned. Expecting the pattern change from warm to cold in the East to occur around Nov 20th or so.

Larry Cosgrove

will caution that the persistent presence of a Baffin Island Block could

lead to another, longer lasting, blast of colder values at mid-month. Both the

European and American model suites are hinting at a rather vast blocking

signature covering northern Canada and Greenland, set against a ridge complex

across the northern Pacific Ocean. That couplet of positive 500MB height

anomalies would doom most of the lower 48 states to a long period of cold with

storm threats along the southern and eastern coastlines of the U.S.

http://www.examiner.com/weather-in-houston/houston-tx-and-vicinity-weather-forecast-halloween-monday-october-31-2011

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I know it's a long way off but you guys need go check out the long range GFS, it shows a massive +PNA ridge and -NAO in the 11-15 day period. If this is right it's going to get mighty cold around here by mid month. Euro ensembles also agree on this pattern change....

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I know it's a long way off but you guys need go check out the long range GFS, it shows a massive +PNA ridge and -NAO in the 11-15 day period. If this is right it's going to get mighty cold around here by mid month. Euro ensembles also agree on this pattern change....

Unfortunately, thus far at least, the global ensembles don't agree. There's actually a fairly large neutral/-PNA signal which, even despite some modestly favorable positive height anomalies into the davis straight & western Greenland, will cause our pattern to be rather unsupportive of any frozen precipitation or cold air surges for the time being.

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Unfortunately, thus far at least, the global ensembles don't agree. There's actually a fairly large neutral/-PNA signal which, even despite some modestly favorable positive height anomalies into the davis straight & western Greenland, will cause our pattern to be rather unsupportive of any frozen precipitation or cold air surges for the time being.

big storm end of the month.

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Unfortunately, thus far at least, the global ensembles don't agree. There's actually a fairly large neutral/-PNA signal which, even despite some modestly favorable positive height anomalies into the davis straight & western Greenland, will cause our pattern to be rather unsupportive of any frozen precipitation or cold air surges for the time being.

That's true John, would be good if we can get agreement from the global ensembles. They all seem to at least agree on a -NAO for the time being. If the GFS is right though, that's a mighty cold look to the pattern. Only time will tell...

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