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Mid to Long Range Threats


Rjay
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  On 2/3/2020 at 6:56 PM, MJO812 said:

This is false

Euro use to be good 5 days out before the upgrade. 

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OP runs beyond 120 hrs are never really great with storm details. That’s why the EPS means are often used 126 to 240. But even then, they mostly show skill with things like AN or BN temperatures and the 500mb pattern. A  Euro advantage is the great ensemble system that often shows when a long range OP run is an outlier among its ensembles. That why a super amped OP solution beyond 120hrs often doesn’t match the EPS mean. The GFS really doesn’t have this relationship with its ensembles. So they can both often turn out to be incorrect.

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  On 2/3/2020 at 7:41 PM, snowman19 said:

We are going into a severely positive AO and NAO pattern along with a PNA tank and a SE ridge, I don’t believe any model showing a coastal snowstorm in the midst of such an anomalously horrible pattern. A -EPO/-WPO isn’t going to help you 

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SE ridge backs down a little after day 12.

But the -EPO is still displaced W so the trough axis end up over the UMW. 

 

 

 

1581876000-1TU519s10nA.png

 

New England  could turn cold here, but chances are that ends up warmer in the M/A. 

 

1581919200-PFTBl4mlad8.png

 

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  On 2/3/2020 at 7:37 PM, PB-99 said:

 

Great , so there will be 2 feet in Killington  and not 3.

 

It`s a NNE pattern was the point. 

 

1581595200-HcJOELfZuQc.png

 

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Honestly the models have been showing the snow line pushing down to CNE for weeks now and that hasn't even been happening. This is just a pathetic winter almost everywhere until we see otherwise

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  On 2/3/2020 at 7:59 PM, HVSnowLover said:

Honestly the models have been showing the snow line pushing down to CNE for weeks now and that hasn't even been happening. This is just a pathetic winter almost everywhere until we see otherwise

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Killington has 127 inches of snow so far this year. They average 250 inches a year and they are probably on their way to N with the pattern in front of them. 

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  On 2/3/2020 at 8:56 PM, WestBabylonWeather said:

I keep hearing the pacific jet keeps crashing the +PNA

what does this mean exactly? how long has I been this way? what type of pattern change would need to happen for it to stop?

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It keeps killing the pna ridge from amplifying into western Canada. So it’s harder for the storms to turn up the coast. But overall the pacific has been a hot mess for two years now. 

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  On 2/3/2020 at 8:30 PM, snowman19 said:

Yep, everytime a +PNA ridge tries to form the PAC jet crashes into it and knocks it right down 

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This needs to be pinned. Second winter in a row of this crap. Cue the 'Oh but the second half of March looks good for a pattern change' aka more cold rain and white rain for the metro in March and April who wants that.

 

Summer and swimsuits at this point, let's just get it over with!

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  On 2/3/2020 at 9:03 PM, WestBabylonWeather said:

what's causing it though? when was the last time it happened?

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It happened all last winter. The pacific jet is just very fast around the globe. We need to slow it down but unfortunately it hasn’t happen. We have done better in March because the wave length shorten. Even when we get a some pna help out west it’s more of a ridge then what we really need. 

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  On 2/3/2020 at 9:56 PM, MJO812 said:

Gefs possibly goes into 7. We need it to move along to have a good March. 

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I don’t currently think we get much help from the mjo this month or the next. The warm waters are just helping convection fire in the wrong phases. 
 

Weeklies keep this Niña type pattern going well into March. There are weeks where the boundary slips south but definitely no deep winter pattern in sight.

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  On 2/3/2020 at 9:48 PM, Allsnow said:

I would need to go back and look. The Pv being so strong and mjo in warm phases isn’t helping.

97-98 had a similar pac jet 

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Hopefully, this just turns out to be a 2 year thing. That’s how it has worked out since 2010. But if we don’t see a change as soon as next winter, then it could be an extended stretch. 
 

09-10....10-11....record -AO/-NAO....Colder and snowy

11-12..................Raging +EPO..........Warm low snowfall 

12-13..................Great February especially eastern sections...warmer winter

13-14....14-15.....record -EPO...built further east into +PNA 2nd winter...cold and snowy

15-16..................Super El Niño...warm and snowy

16-17.....17-18....Warm and snowy La Niña 

18-19....19-20.....Warm and less snowfall...ridge stuck north of Hawaii with persistent cutter and hugger storm tracks

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