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2/14-2/15 Potential Major Winter Storm


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45 minutes ago, Chicago Storm said:


but, it’s actually not the reason.

look at the H5 changes over the past few days and you have your answer.

Convection absolutely blocked moisture transport up to the region its also modulated the mass fields causing the surface low to be further east.

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3 minutes ago, buckeye said:

36 hours ago several models were big dog’n Chicago thru Detroit.   Now it looks like Chicago won’t see crap and Detroit will get a run of the mill advisory snow.  If you can’t trust models 2 days out, wtf is the point?   Crazy

Maybe we shouldn’t defund the NWS?

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33 minutes ago, buckeye said:

36 hours ago several models were big dog’n Chicago thru Detroit.   Now it looks like Chicago won’t see crap and Detroit will get a run of the mill advisory snow.  If you can’t trust models 2 days out, wtf is the point?   Crazy

That butterfly in China is really beating those wings...

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4 hours ago, Chicago Storm said:


but, it’s actually not the reason.

look at the H5 changes over the past few days and you have your answer.

DTX and IWX both disagree with the bolded per their AFDs, respectfully.

Disruption of moisture transport is not be the *ONLY* reason, but it has ended up being *A* reason, unfortunately.

The 500mb configuration was never all that favorable for a big dog despite the model runs the day before yesterday, but in the absence of the Tennessee Valley convection, a narrow but quick hitting band of heavy snow would have had a much easier time developing further NW given the instability & forcing that's in place (which is looking increasingly less likely to happen by the hour).

 

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First sign of a bust was there was nothing falling for nearly 8 hr last night and I was suppose to have steady light sn. Then I wake up to find no flakes! :lmao: Dry slotted to hell! A few cm fell overnight but nothing like 10cm with it ramping up to peak by 9am. Currently -SN almost pixie dust...

WUN forecast has me at 5-10cm or 6.7 today :lol:. Was 23 few days ago. My 25cm til Tues call looking solid.

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Convection absolutely blocked moisture transport up to the region its also modulated the mass fields causing the surface low to be further east.

Bingo. It didn’t help that not only was there that powerhouse line through the south, but strong convection along the Ohio River holding down moisture on the back end of this system quite a bit
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10 hours ago, Chicago Storm said:


but, it’s actually not the reason.

look at the H5 changes over the past few days and you have your answer.

yup, convection robbing moisture is a weenie talking point.

ugly trough, ugly look at 85o = trashy nw side

H5 look got close for a second there but backed away and then trended progressively worse...was never gonna get it done

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32 minutes ago, nwohweather said:


Bingo. It didn’t help that not only was there that powerhouse line through the south, but strong convection along the Ohio River holding down moisture on the back end of this system quite a bit

Yeah the training shit along the river blocked the deeper moisture from coming north. 

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