January 2023

General Weather Discussions and Analysis
Cpv17
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Stratton20 wrote: Sun Jan 22, 2023 1:22 pm Very impressive build up of cold air on the euro (12z) bring that stuff south baby!🥶🥶👀🤞
I’m hearing the MJO is going to play a huge factor in this potential cold because they aren’t sure which phase it’s gonna be in yet.
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sambucol
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Can that SW ridge and Arctic air create an over running setup?
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sambucol
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And what is the high pressure associated with the arctic air mass?
Stratton20
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sambucol yes the SE ridge can help to create an overrunning or winter storm setup, especially ice storm setups as the warm se flow can overrun cold arctic air, as long as the ridge doesnt get too close though, the euro has a 1050 mb high in NW canada
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don
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Yep the 12Z Euro has the SE ridge displaced much further east.And also shows the arctic air being dense and shallow enough to undercut the ridge at the end of its run FWIW.Looking more and more likely now that our source region will finally be getting filled with arctic air again.Just a question if we can get a setup to dislodge the arctic air down south.
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sambucol
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Hopefully, that air mass plunges this way all the way through the Texas coast.
Cpv17
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sambucol wrote: Sun Jan 22, 2023 1:50 pm Hopefully, that air mass plunges this way all the way through the Texas coast.
Watch the strength of the high coming down from NW Canada. General rule of thumb is the stronger the high pressure, the colder it’ll be.
Stratton20
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The 12z CMC has the arctic air penetrating all the way down to the coast
Cpv17
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Stratton20 wrote: Sun Jan 22, 2023 1:54 pm The 12z CMC has the arctic air penetrating all the way down to the coast
As do the ensembles as well. Confidence is growing.
Cpv17
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This was posted over on S2K by “orangeblood”.

Just thought I’d share it here as well:

Image

Has temp anomalies of almost 60°F below normal coming down.

This is the 12z Euro control run, btw.
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sambucol
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If that Arctic cold with an over running setup happens, that would produce a winter precip event more than likely. Bad thing would be an ice event.
Cpv17
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sambucol wrote: Sun Jan 22, 2023 3:05 pm If that Arctic cold with an over running setup happens, that would produce a winter precip event more than likely. Bad thing would be an ice event.
It depends on the strength/proximity of the SE or E coast ridge to see how much it would impact or sensible weather. And also would depend upon the depth of the potential cold air headed this way. And of course the biggest factor would be if there’s even any system/energy around to produce precipitation.
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MontgomeryCoWx
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I haven’t wavered on February being well below. Glad to see it coming around to my thinking.

I’ve seen others yell warm February and then lazy analysis as to why. I use old school tools from my Grandfather and use models as a tool, not an end all be all.
Team #NeverSummer
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MontgomeryCoWx
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Cpv17 wrote: Sun Jan 22, 2023 12:21 pm
MontgomeryCoWx wrote: Sun Jan 22, 2023 12:12 pm If SETX can't get ice/snow, I'll take 3 plus inches of rain to fill up my tanks at the farm. All day every day after the last year.
It doesn’t rain as much in Weimar as it does in Montgomery County. You won’t be too far from me. I’m pretty much exactly one hour SE of Weimar. And when you live on a farm, rain is almost always welcomed. Gladly take it.
We have drought insurance! Just got a check for 5 grand last week for last year. That was my net on the premium.
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don
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Updated qpf amounts from the WPC.
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wpc_qpf_16h8h_p.us_sc.png
Stratton20
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18z GFS breaks down the south east ridge, arctic air on our doorstep on the 30th
just a quick shot of arctic air though
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9608864A-3389-46CF-9C20-74E5F749813C.png
brazoriatx
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Quick shot ain't even worth it ya know lol give us atleast 3 or 4 days of cold temps
Stratton20
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brazoriatx the GFS has a known progressive biacy with arctic airmasses,
Cpv17
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Let’s wait for the 18z GEFS to finish running to get a better handle on the length of the cold.
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DoctorMu
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Things are looking interesting on the Canadian about Feb 1, Groundhog Day, etc. Deep cold from the Rockies and some precip behind the front. The 0Z run could be interesting.

Just to reiterate: CMC nailed the Feb 2021 storm. GFS lol
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