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January 2026 Medium/Long Range Discussion


snowfan
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28 minutes ago, Weather Will said:

Let me get this straight: So for a major east coast snow storm we need: -AO, +PNA, -NAO, -WPO, -EPO, weak SPV or SW, MJO in phases 1-3, low sun angle during the day, Modoki El Niño SST in Pacific and below normal in Atlantic to keep SER in check, and all cows farting SE in the upper Midwest to push down enough cold air.  At the same time at the surface, we need an upper level low in the TN valley, an arctic High over Quebec, and a surface low tracking NNE off of Hatteras....oh and a truckload of luck.   What am I missing!!!?

did you not know how weather works before today? Some username....

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4 minutes ago, Weather Will said:

I hope everyone realizes my post was trying to make a point.....it ain't easy getting everything to line up for a BECS/MECS.

Yeah I think we all know there's a reason these KUs happen once or twice every 10 years... or even longer.

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7 minutes ago, Weather Will said:

I hope everyone realizes my post was trying to make a point.....it ain't easy getting everything to line up for a BECS/MECS.

Indeed. Unfortunately some folks misinterpret posts like that so I was attempting to add a crumb of context.

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I don't think the storm would be ending fast on the Icon despite that surface map. If you look at the 700mb RH and wind direction along with 500mb vorticity, I think snow would linger. Here are the links.

https://www.pivotalweather.com/model.php?m=icon&p=700rh&rh=2026010812&fh=180&r=conus&dpdt=&mc=&pwplus=1

https://www.pivotalweather.com/model.php?m=icon&p=500hv&rh=2026010812&fh=180&r=conus&dpdt=&mc=&pwplus=1

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2 minutes ago, mitchnick said:

I don't think the storm would be ending fast on the Icon despite that surface map. If you look at the 700mb RH and wind direction along with 500mb vorticity, I think snow would linger. Here are the links.

https://www.pivotalweather.com/model.php?m=icon&p=700rh&rh=2026010812&fh=180&r=conus&dpdt=&mc=&pwplus=1

https://www.pivotalweather.com/model.php?m=icon&p=500hv&rh=2026010812&fh=180&r=conus&dpdt=&mc=&pwplus=1

Yea there's a decent moisture feed with that storm and it looks fairly neutral at 500 mb?

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7 minutes ago, soadforecasterx said:

That block north of main is what I like to see for our bigger storms. 

icon-500hv-conus-2026010812-180.png

Seems like a 50/50 low locks everything in? Not a terrible spot for the antecedent high, not great either. IIRC, that setup worked for 12/19/09 too.

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