GFS Model Winter Fantasy Land
For the first time since I can remember we have the long range indices that measure blocking and the weather patterns across the northern hemisphere lining up for an ideal winter time look. Too bad for snow lovers it is the middle of March and not the middle of any other winter month.
GFS Model Winter Fantasy Land Long Range Indices
In fact the North Atlantic Oscillation and the East Pacific Oscillation will have its strongest negative reading in a long long time toward the end of next week. The Pacific North America Pattern index is positive but not overly so. If all these indices are lined up for a last gasp of winter weather then what is the problem?
The problem is two fold. There is, among things, one important index that is not exactly following along. The Arctic Oscillation or AO is at best neutral all next week. If that index were negative, there would be much colder air all over the place. Instead we have at best marginally cold air. Given the time of year that is simply not enough.
The second issue is the position of the trough which I believe is a little too far west at the point it goes neutral. The GFS model today seems to be in fantasy land going for coastal development of of what would be a major storm for the northeast especially the interior.
GFS Model Winter Fantasy Land UPPER AIR NEXT SUNDAY MARCH 20TH
GFS MODEL SURFACE MONDAY MARCH 21, 2016
My own view on this is that the European shows nothing like this. It has the deep trough but it is much broader and much less developed. It also has been very consistent for the last 7 or 8 runs about this idea of low pressure being less developed and going well west and north. I can’t see how the GFS could be close to being right since we have seen over and over again how some models show intensity and phasing early in the game only to grasp reality that the phasing and timing is just not there. Now is it possible that the GFS might have the better idea? Sure..broken clocks are right twice a day. However it is hard to go against the European model which has been far superior. It is hard for me to get worked up over the GFS since even in the short range it has come around to the European idea (finally). This is a huge bet against in my view. But we will keep an open mind and see if the European changes its view of the longer term. Speaking of fantasy here is the GFS snowfall forecast map. I will post about the Euro model later this afternoon. Now with the time change, models come out an hour later so the Euro model won’t be done until 3pm.
GFS Model Winter Fantasy Land SNOWFALL FORECAST MAP
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