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December Medium/Long Range Discussion


yoda
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45 minutes ago, JakkelWx said:

That name is never to be mentioned. I had nightmares for a couple days when billy cundiff missed that FG.

 

27 minutes ago, WxUSAF said:

I didn’t sleep for like 60 straight hours

 

25 minutes ago, CAPE said:

It was hideous. I try not to hate, but man that was tough.

Ya know, the only thing that took away the sting of that loss was the Superbowl we won the next year. Much more memorable story...so I can't be upset at what happened the year before anymore--because I daresay that helped set things up the greatness that would follow the next year!

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Overall probability is reassuring that the Greenland blocking regime is indeed real.

 
Tropospheric-led but then subsequently likely reinforced by the weakened stratospheric vortex, the GEFS 35-day shows an unusually strong signal for the Arctic High regime (Greenland blocking) to dominate the North American regime space over the coming few weeks.
 
 
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Just now, frd said:

Overall probability is reassuring that the Greenland blocking regime is indeed real.

 
Tropospheric-led but then subsequently likely reinforced by the weakened stratospheric vortex, the GEFS 35-day shows an unusually strong signal for the Arctic High regime (Greenland blocking) to dominate the North American regime space over the coming few weeks.
 
 
Image

you can always wait and see if it happens, the  reliance on guidance gets a bit overwhelming, don't you think sir??

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7 x more likely.   Good odds. 

 
Replying to
The Arctic High regime is ~7x more likely to occur if the lower-strat vortex is weak than strong (https://doi.org/10.1029/2019GL085592) - and that's certainly consistent with this forecast. Suggests that the accuracy of the stratospheric forecast may be important here for the regime forecast.
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Just now, howrdcounty snow said:

you can always wait and see if it happens, the  reliance on guidance gets a bit overwhelming, don't you think sir??

This is a long range thread ?  

Gathering unique, useful data and weighing it for long range outcomes is the fun part  of long range forecasting.  

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2 minutes ago, frd said:

This is a long range thread ?  

Gathering unique, useful data and weighing it for long range outcomes is the fun part  of long range forecasting.  

yes partially agree but considering the last storm, the long range proved in accurrate, so in my view LR forecasting doesn't always pan out, yes that's weather forecasting, but thee are other factors to consider which I won't touch. TYVM for your responses.

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7 minutes ago, howrdcounty snow said:

yes partially agree but considering the last storm, the long range proved in accurrate, so in my view LR forecasting doesn't always pan out, yes that's weather forecasting, but thee are other factors to consider which I won't touch. TYVM for your responses.

I'm not sure about the statement that the long range was "inaccurate". The storm signal was there for like 10 days.   The existence and approximate location were never in doubt.  Yeah there was a time where it looked like DC was going to good snow, and that didn't happen but that was corrected.  The fact that we knew about the storm at all from 10 days out is a miracle of modern science.

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1 hour ago, leesburg 04 said:

Man that Blair Walsh miss was from like 2 ft to beat Seattle in the playoffs, then the Gary Anderson miss against the Falcons to go to the superbowl….gah!!! I hate kickers

The Anderson miss is the stuff of Vikings legend. It’s a history of Viking football in a nutshell

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5 minutes ago, losetoa6 said:

Gefs has a cluster of CAD believers NYE . Sometimes these CAD events get better as we near . :weenie:

 Front end thumpin would be real nice 

Speed up that s/w or bring it out in pieces with that cold high up top and we’re in the game.

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19 minutes ago, cbmclean said:

I'm not sure about the statement that the long range was "inaccurate". The storm signal was there for like 10 days.   The existence and approximate location were never in doubt.  Yeah there was a time where it looked like DC was going to good snow, and that didn't happen but that was corrected.  The fact that we knew about the storm at all from 10 days out is a miracle of modern science.

I agree with this. I'm of the age where I remember that all you could get was a 3 day forecast. It was a BIG DEAL when they started to do 5 day forecasts! Yeah, long range is useful.

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57 minutes ago, WxUSAF said:

Actually looks closer to a CAD event for NYE. 

Sooooo 2020 to end on a catastrophic ice storm .  If it happens you will forever be associated with it lol. 

36 minutes ago, losetoa6 said:

Gefs has a cluster of CAD believers NYE . Sometimes these CAD events get better as we near . :weenie:

 Front end thumpin would be real nice 

Best example of this and a good bust in some places was Feb 2015 when from 72 hours it looked like a rain storm and trended south so much that our area got 6-12” of snow despite a surface track to our NW.  but that has an Arctic high with sub 0 temps in front of it. 

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