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First Winter Storm to kickoff 2025-26 Winter season


Baroclinic Zone
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31 minutes ago, brooklynwx99 said:

i fucking hate the AIFS dude. it gets humped to no end and people rely on it too much 

sometimes analysis is just “well, the AIFS shows this, so…” and it’s the worst

I completely agree. It was recently made operational (Feb. 2025) and its primary purpose (imo at the current moment) is to provide an efficient (few resources and fast to simulate), medium/long range ensemble... I consider it a less accurate version of the CFS, honestly. They're years, if not decades, away from making the AIFS comparable to any traditional NWP modeling system. I'm not even fully sold on that being a possibility either... I'll take it seriously when the AIFS outperforms the IFS at the surface and not 500-50mb :)

Vendors will provide any modeling system to stand out, unfortunately... At this range, I'd primarily consider the ECMWF, GFS, CMC, ICON, and UKMET (with more emphasis on their ensembles). Maybe look at trends of the AIFS for S&Gs.

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1 minute ago, CoastalWx said:

Gfs is very warm still in SNE. QPF is best near low track so not much oomph in the colder air for heavier amounts. 

The biggest difference this run was definitely the cold side. Where it’s cold enough for snow it ended up pretty meh. Probably talking a 1/3 to 1/2 reduction 

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