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Rocktober like the old days. Bridging to winter


weathafella

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This time of year, those correlations aren't terribly strong...especially if the wave is not coherent. However, if the models are right...it may be coherent enough to have a say in tipping the northern hemispheric pattern one way or another. The weird thing is that many October Ninos are usually cooler than normal, but one can argue this almost doesn't classify as one...or barely so. I just posted it for giggles. It's interesting anyways.

If the models are correct...I wouldn't mind seeing this move east and perhaps push some westery winds past the dateline. I'm not so sure that wil happen.

One thing that chart definitely did suggest is that the -PNA might not be going anywhere for a while, but most mets have been on top of that for a week or more anyway. The negative anomalies in NW canada for phase 8 are pretty impressive.

edit- Will say I'd have expected slightly greater negative anomalies in the Rockies though for a true -PNA. Maybe more of a compressed jet look, which might equal pac firehose?

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One thing that chart definitely did suggest is that the -PNA might not be going anywhere for a while, but most mets have been on top of that for a week or more anyway. The negative anomalies in NW canada for phase 8 are pretty impressive.

It's fun to watch the correlations for the MJO change with the season as the wavelengths change.

Just getting back in the loop after a week of no weather. Didn't seem to miss much lol.

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Apparently SPC is adding an "enhanced" risk to bridge slight and moderate. They may convert see text to marginal.

This is sort of funny because I've been doing the same thing on air. Low/enhanced/significant/extreme.

To be honest, I'm not sure the benefit of this new change. I guess perhaps because the outlooks don't really sway me any which way.

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Man, these operational runs are all over the place! You got the 00z CMC threatening a D10 run with an EC 'cane, the 12z GFS indicating that D10-15 goes to winter from the NP to NE and sustains some serious cold anomalies...

Actually, the 00z Euro hinted at the CMC -

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To be honest, I'm not sure the benefit of this new change. I guess perhaps because the outlooks don't really sway me any which way.

I generally don't like the categorical outlooks either. I really don't think they're the best way to convey a threat as we've discussed before on here.

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Ahh, yes. The annual GFS op run featuring both snow and an offshore tropical system.

haha - I know, but I think you meant GGEM ?

every year, the GGEM tries to phase a TC into a mid latitude blizzard at least once per autumn.

if you go back and look at GGEM runs from 7 or so days before the big December storm of 2003, that had a TC/Blizzard hybrid hyper bomb on the Va Capes.

anyway, the run about doesn't do that, per se, but it is interesting that it implies an EC threat and then the GFS goes to winter shortly thereafter.

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haha - I know, but I think you meant GGEM ?

every year, the GGEM tries to phase a TC into a mid latitude blizzard at least once per autumn.

if you go back and look at GGEM runs from 7 or so days before the big December storm of 2003, that had a TC/Blizzard hybrid hyper bomb on the Va Capes.

anyway, the run about doesn't do that, per se, but it is interesting that it implies an EC threat and then the GFS goes to winter shortly thereafter.

The 12z GFS has a TC pretty far offshore, but it was tied to a deep trough plowing through the East Coast. I suppose the merit of a TC trying to develop is there given some favorable teleconnections.

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major Greenland block after day 10 on GFS..keeps us cooler toward the end of the month

The EC had some blocking too, but I can't trust the GFS op. The GEFS were a little cooler....we'll see of the EC follows suit. It would take a substantial shift in the overall pattern to flip what is progged and I don't see it for now.

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