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Jan 11-12 Model/Forecasting Discussion


Ji

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Can you point out which ones show that? I see one, at least.

ARW1

ARW3

ARW4

RSM1

RSM2

RSM3

RSM4

ETA3

ETA5

RSM 3 and 4 are a total disaster and would be nothing at all

the others in that cluster would be very little, maybe 1-2" and Philly north might do well as the secondary finally takes over

in total 9 out of 21 SREF members are a bad solution, but none because the storm is OTS, its because they take the primary west and north of us

Of course that leaves 11 that are pretty good

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Well, if you take some of those runs of the GFS at face value, you won't see any real snow chances when whatever cold air we get backs off. Not saying they're right (we are talking 10 days out or so), but some of those cycles sure don't seem to indicate good snow chances in the medium-longer range.

I am not concerned. GFS still struggles with 48 hours out. Why look at 200+?

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ARW1

ARW3

ARW4

RSM1

RSM2

RSM3

RSM4

ETA3

ETA5

RSM 3 and 4 are a total disaster and would be nothing at all

the others in that cluster would be very little, maybe 1-2" and Philly north might do well as the secondary finally takes over

in total 9 out of 21 SREF members are a bad solution, but none because the storm is OTS, its because they take the primary west and north of us

Of course that leaves 11 that are pretty good

You are doing some generous extrapolation of those runs, IMO. It doesn't matter either way.

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I am not concerned. GFS still struggles with 48 hours out. Why look at 200+?

Very true, of course...if you're looking for specific storms, etc., I agree. But at those ranges of course I'm just looking to see what the overall, longwave flow indicates, and using it for that isn't all that bad. My point really was that for some time, the GFS in the longer ranges looked consistently cold, and there was a substantial Arctic outbreak in the offing. Now, there have been at least a few cycles that have backed way off from that, even to the point that it's not all that cold here behind whatever front goes through next weekend...and the flow then lifts significantly from what it showed for so long before that. Now the ensemble mean has been a little different, as one might expect. Again, not talking specific 300+ hour fantasy storms, but the main overall flow.

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Good point. However, we all looked at the track on 12/26 and thought the precip field would be better given the track of the slp...did not work out too well.

We were kind of doomed with that one, though. Wes even said with that one that it really had to work out just right for us.

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