Wednesday Afternoon: Concerning-Every Model From This Morning Went Higher

10/28/26 Wednesday Noon

The big story is in this post’s title. After the models increased totals overnight, they did it again this morning. Not only for Sunday and Monday, but now for Saturday too; of course, it was right after I said, “I would not be surprised if the Saturday precipitation did not happen.”

I am going to skip the detailed snow-level talk for now. Models are fluctuating those snow levels as they try to anticipate when the cold air will arrive versus the moisture. At a glance, rather than a deep dive, it looks like the snow levels will start high, in the 10,500 to 11,500 range, and drop below pass levels by late Sunday afternoon or evening.

If I were planning to go over the passes Sunday late afternoon through Tuesday morning, I would change my plans. You may not even have a choice, because they may pre-emptively close passes early before it gets bad.

OK, I have talked about the models; now let’s see them

European

European AI

Canadian-these bullseyes in the Canadian and the GFS AI below it are very concerning.

GFS AI “crazy totals”

We are still 4 days out, so I can’t share the shorter-term/higher-resolution models yet. I can add those to the mix tomorrow afternoon.

If, 24 hours from now, the models are this aggressive or higher. I will be pushing the panic button, as I did early on last week.

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Wednesday Morning: Anomalous Runs Or Genuine Concern?

10/28/26 Wednesday 5 am (overslept)

Changes:
  • The European is slowly going back to a wetter solution
  • Latest model runs show more of a “direct hit” starting Sunday
  • Models are delaying cold-air infiltration until the moisture is mostly gone on Monday, raising snow levels back to 564 dam (11,000 ft).
  • This would increase high-elevation runoff
  • I am still leaning on Saturday being a non-event, maybe nuisance rain of 0.10″-0.30″

Sounds scary, but this is one model run; it could be anomalous, or it could be a trend. Still a lot of uncertainty, but it’s an eye-opener.

European

European AI

Canadian: I keep referring to the GFS AI and Canadian as having “crazy” totals. Compared to the other models, their totals look crazy, but the Canadian and GFS AI were the most accurate for the last event.

GFS AI

Canadian

Again, don’t panic; be aware. The next two sets of model runs will tell us whether these are anomalous runs or the new trend.

 

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