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MO/KS/AR/OK 2020-2021 "Winter" Discussion


JoMo
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Well, that was a warmer run and farther west as well on the Euro. Suspect it may have to do with the strength of the upstream "kicker" system digging into the SW and how it influences how wrapped up the main storm system gets. Variety of model solutions still on the table it looks like.

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TSA does address the warm air.

"The Wed night through Friday forecast remains difficult. Good
consensus does exist in a closed low developing within the base of
the broader trough axis by early Thursday then lifting
northeastward into the Missouri Valley by Friday afternoon. The
much more uncertain aspect remains the exact track and the
associated influence on thermal profiles and respective precip
types as the system passes. A clear westward trend continues
within the operational ECMWF while the operational GFS remains on
the eastern periphery of its ensemble suite. Furthermore the
latest EC ensemble suite show a notable warming trend in the
lowest levels compared to recent runs, all of which would favor
the forecast leaning toward the stronger western solution of the
upper low passage. The lack of a deep cold low level airmass in
advance of the upper low also favors a warming thermal profile
well west of the sfc low track. Noteworthy is the continued
presence of the unseasonably high moisture content airmass and its
likely influence in yielding a broader and heavier precip
footprint within the western semicircle of the upper low. The
forecast trending toward the warmer solution does limit snow
potential but also raises the potential for an area of light to
moderate freezing rain. Currently the favored region for notable
ice accumulations would be across far NE OK into far NW AR.
Obviously plenty of moving parts in this forecast scenario and the
forecast should be expected to change."
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2 minutes ago, rockchalk83 said:

The 12z GEFS is not as warm for SW Mo as the op run. There is hope? 

I don’t think all hope is lost, but the trend is certainly concerning. We shall see what happens tonight and tomorrow morning with fully sampled data, but regardless of track we’re going to have to keep an eye on temps. 

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25 minutes ago, The Waterboy said:

You and I get hammered on that Canadian run.   The 2009 storm (was 2000 a typo?) was awful.  Lots of damage.   

I was actually living in Tulsa for the 2009 one. I agree with what you said from what I saw and heard. The 2000 one that hit on Christmas Eve was pretty rough too.

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7 minutes ago, StormChazer said:

Hr 55 on the Euro and it's looking a little cooler right now than the 00Z run last night. Or maybe it's just the front is coming through quicker.

H72 it looks like it's going to be slower or farther west though. The kicker system is closer to it. 

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