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Possible Record Breaking Cold + Snow Sunday 1/25 - Tuesday 1/27


TriPol
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1 hour ago, WeatherGeek2025 said:

i don't believe the CMC is right, that high pressure just can't get pushed like that from such a weak low pressure yes it's a big system but the pressure gradient isn't low enough for higher gradient to imbalance it that fast and strong! I call this run a bleep and I think it's either GFS or south

Surface features aren't in control. A surface high can't block anything. Surface features, including highs and lows, are the result of the upper levels. Look at this 500mb chart. We're pushing 560dm with a vorticity packet and shortwave headed for the Lakes. That absolutely can send a strong primary to southern Ontario. We're lucky we have a good cold airmass in place, otherwise this would be ice to rain.

gem_z500_vort_us_18.thumb.png.f0b099707b3fecd129c10408be29e645.png

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12Z Euro AI AIFS  good
total QPF - storm
 
qpf_acc-imp.us_ne.png

1.1 had fallen by 126 and it just broke above 20 degrees in the city at 23. I'm guessing it's no changeover. Can't really tell on pivotal


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1 hour ago, Winterweatherlover said:

I can't remember the last time there was such a wide swath of heavy snow. This feels like a 90s storm again.

PDII was kind of like this but a little less coverage than the models are currently printing out. These long duration storms are my favorite, nice cold storm with steady 1"/hr rates for many hours. 

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