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January 2026 Medium/Long Range Discussion


snowfan
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Question for any mets or model experts out there. After this weekend’s storm we’ll have, as has been described, a glacier. Never really seen the kind of ice topper we’re staring down myself (at least not as an adult who has very amateur knowledge of weather) and I imagine it is an even higher albedo than just a plain snow pack. Looking forward to the next 10 days, does model thermal handling perform better or worse with anomalously high albedo ground conditions? Just curious, not thinking about this in a weenie “surely the models are underdoing cold” but rather just very intrigued by an anomalously large ice pack.

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6 minutes ago, baltosquid said:

Question for any mets or model experts out there. After this weekend’s storm we’ll have, as has been described, a glacier. Never really seen the kind of ice topper we’re staring down myself (at least not as an adult who has very amateur knowledge of weather) and I imagine it is an even higher albedo than just a plain snow pack. Looking forward to the next 10 days, does model thermal handling perform better or worse with anomalously high albedo ground conditions? Just curious, not thinking about this in a weenie “surely the models are underdoing cold” but rather just very intrigued by an anomalously large ice pack.

ice has a slightly lower albedo than snow. I don't believe slight variations in albedo based on snowpack quality are something most models handle, it's usually snow-covered/not snow-covered

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3 minutes ago, LordBaltimore said:

ice has a slightly lower albedo than snow. I don't believe slight variations in albedo based on snowpack quality are something most models handle, it's usually snow-covered/not snow-covered

Really? Didn’t know ice would be lower, figured it would be more reflective. But helpful!

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57 minutes ago, baltosquid said:

Really? Didn’t know ice would be lower, figured it would be more reflective. But helpful!

fresh, powdery snow has the highest albedo of any surface. Light gets almost completely scattered. Ice and sleet are a bit more translucent if you look at them closely

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AIGFS does have the coastal next weekend but... it is a rainer lol. Not that I put any stock in the progression at this range but could you imagine getting a perfect track coastal with this cold air and then it's rain? I shudder to think about the forum's psyche in that hypothetical. Anyway, everyone get ready to track the late week miniclipper come tomorrow.

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4 minutes ago, baltosquid said:

AIGFS does have the coastal next weekend but... it is a rainer lol. Not that I put any stock in the progression at this range but could you imagine getting a perfect track coastal with this cold air and then it's rain? I shudder to think about the forum's psyche in that hypothetical. Anyway, everyone get ready to track the late week miniclipper come tomorrow.

There’s that GL low. AI is “learning” about those :lol:

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Gefs is building a decent sized camp of near the coast lows. Upper air pattern looks to favor a too far offshore track but this was a pretty good run all things considered. As we just relearned for the millionth time lol.... winter wx tracking is never clear cut and simple even inside of 96 hours. Lead time is double that rn

image.thumb.png.46265f95e013faeb0ce993efe3da4f0c.png

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18 minutes ago, Bob Chill said:

Gefs is building a decent sized camp of near the coast lows. Upper air pattern looks to favor a too far offshore track but this was a pretty good run all things considered. As we just relearned for the millionth time lol.... winter wx tracking is never clear cut and simple even inside of 96 hours. Lead time is double that rn

image.thumb.png.46265f95e013faeb0ce993efe3da4f0c.png

I haven't been looking quite as much at this thread, obviously, with the upcoming event taking most of my focus.  But overall I like the signal as we approach the end of January and first week of February.  And actually that signal was appearing around that time for awhile now.  I gave a very cursory glance at the GFS surface, and caveats aside about a deterministic run way out in time, but damn it looks to unload another 1050 high into the US near the end of its run!

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For 12z, EPS-AIFS has an OTS coastal signal, similar to the GEFS. EPS has a few coastal members but not as enthused.  MOGREPS-G (UK ensembles) actually might have the strongest signal of all of them. ICON-EPS doesn't really have it other than one or two members but also only goes to 180 so not sure what it might have done later, but definitely not excited about it. GEPS... Bueller? Bueller...

Basically, it needs to come closer to the coast. After the suppression died a coward's death this weekend, I don't mind hoping for that. But we might just go right back to the La Niña specialty and keep it down south, who knows.

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4 minutes ago, baltosquid said:

For 12z, EPS-AIFS has an OTS coastal signal, similar to the GEFS. EPS has a few coastal members but not as enthused.  MOGREPS-G (UK ensembles) actually might have the strongest signal of all of them. ICON-EPS doesn't really have it other than one or two members but also only goes to 180 so not sure what it might have done later, but definitely not excited about it. GEPS... Bueller? Bueller...

Basically, it needs to come closer to the coast. After the suppression died a coward's death this weekend, I don't mind hoping for that. But we might just go right back to the La Niña specialty and keep it down south, who knows.

GFS gives the coast some love

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14 minutes ago, Ralph Wiggum said:

I mean, if this is how we are rolling into mid February,  I wouldnt complain. GEFS mean Feb 8:

gfs-ens_z500a_namer_63.png

West based Greenland blocking might be in play due to the strat background state taking place during this time period. 

Would love to get a Manitoba Mauler to pop off NC and explode and do a loop de loop off the Mid Atlantic Coast.  Been waiting decades. 

 

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