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Winter model mehhem or mayhem nature will decide


weathafella

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5 minutes ago, RUNNAWAYICEBERG said:

Hes drinking his spiked coffee with like 8 monitors, pulling up maps like its nothing. Just weenie grinding away. hes like a pro online poker player playing 12 tables. 

Lol actually on my phone on my deck, it's 3 degrees  the snow is sparkling like Diamonds in the Sun. I already had looked at U wind. Also PWAT , 250 wind. Probabilities of .5 are 50% all the way to you. You qpf queens need to start learning ratios.  

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4 minutes ago, Ginx snewx said:

Lol actually on my phone on my deck, it's 3 degrees  the snow is sparkling like Diamonds in the Sun. I already had looked at U wind. Also PWAT , 250 wind. Probabilities of .5 are 50% all the way to you. You qpf queens need to start learning ratios.  

One day a time will come when qpf maps aren’t the go to until day of

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7 hours ago, 40/70 Benchmark said:

Remember what I said about N stream energy this season relative to modeled intensity before coming ashore.

I don't think this is exclusive to this year either.

Southern streams come with a lot of baggage (convection) that is havoc on the models (convective parameterization since they can't directly model). The northern stream doesn't come with that convective baggage, and often may not even have a significant surface reflection (shallower). BUT the upper levels (PV anomalies and the like) can be very strong and have significant influence once they make it into the mid latitudes.

We try and mitigate this problem with satellite radiances, but they are just estimations after all. It is a significant contribution to why we can see models change solutions so much around day 3/4, because that's about the typical time it takes a shortwave to reach the West Coast and traverse the US.

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4 minutes ago, OceanStWx said:

I don't think this is exclusive to this year either.

Southern streams come with a lot of baggage (convection) that is havoc on the models (convective parameterization since they can't directly model). The northern stream doesn't come with that convective baggage, and often may not even have a significant surface reflection (shallower). BUT the upper levels (PV anomalies and the like) can be very strong and have significant influence once they make it into the mid latitudes.

We try and mitigate this problem with satellite radiances, but they are just estimations after all. It is a significant contribution to why we can see models change solutions so much around day 3/4, because that's about the typical time it takes a shortwave to reach the West Coast and traverse the US.

 Yes, the notion that this is "slipping away" is a mirage imo....until we see this sampled.

If it still looks that way in 24 hours, sound the eulogy. 

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Red flag when the normally progressive Navgem is amped up?

Latest BOX discussion:

 

It is interesting to note that 
even if storm tracks well offshore, potent upstream trough may 
lead to some sort of inverted trough extending well back to the 
west, so some snow is likely across southern New England even with an eastern 
solution. 

Complex upper air pattern with amplifying trough moving into 
the Great Lakes with separate lead shortwave lifting NE from the 
Gulf Coast which induces significant cyclogenesis offshore. The 
timing and amplitude of upstream shortwave energy moving into 
the southeast Continental U.S. And Great Lakes and how these shortwaves interact 
will determine the track and how close this storm gets to new 
eng. Given that the responsible shortwave energy is still over 
the northern Pacific and north of the Arctic Circle it will 
likely take until Mon night or Tue before energy is better 
sampled by upper air network, so further changes are likely in 
the guidance. 
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1 minute ago, CTWeatherFreak said:

Red flag when the normally progressive Navgem is amped up?

Latest BOX discussion:

 


It is interesting to note that 
even if storm tracks well offshore, potent upstream trough may 
lead to some sort of inverted trough extending well back to the 
west, so some snow is likely across southern New England even with an eastern 
solution. 

Complex upper air pattern with amplifying trough moving into 
the Great Lakes with separate lead shortwave lifting NE from the 
Gulf Coast which induces significant cyclogenesis offshore. The 
timing and amplitude of upstream shortwave energy moving into 
the southeast Continental U.S. And Great Lakes and how these shortwaves interact 
will determine the track and how close this storm gets to new 
eng. Given that the responsible shortwave energy is still over 
the northern Pacific and north of the Arctic Circle it will 
likely take until Mon night or Tue before energy is better 
sampled by upper air network, so further changes are likely in 
the guidance. 

I remember somebody making fun of somebody when rhey suggested they would check back on Tuesday once everything is sampled 

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16 minutes ago, NorEastermass128 said:

Euro, Gem, UK, Navgem are all moderate or greater impacts. Gfs fringes...why so negative?  Because the Gefs went E?

GEFS precip drastically increased across all of NE from 0Z, like last night's UKmet B.S. yea it didn't have a 2 inch contour but rather spread it out. The problem here is some are looking for a superstorm or a jack. 

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