Terpeast
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Everything posted by Terpeast
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I think a blend gets us to 6-10" DC metro, 8-12" NW, 12"+ out up in WV panhandle through PA SE of DC 4-8" with lots of sleet, and south of EZF start to see icing (subject to change ofc)
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It was awesome. Started out raining briefly, then flipped hard and the rates - oh man. I stayed up the whole night. Worth the sleep sacrifice.
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We've got another busy week coming up on the heels of this upcoming winter storm!
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Good luck and stay safe/warm. We appreciate your work.
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This is where the mountains help us with CAD.
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I’m hoping for a compromise between gfs and everything else. But i suspect the gfs will cave by tomorrow
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Main takeaway is the NAM puts itself in Euro's camp, even though it trended a touch colder.
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He’s comparing two different models, not two different runs of the same model.
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Looks like the warm nose starts at 700-750, then later 800-850
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If we could coax that high more west and raise SLPs in WV, we could tip the seasaw in favor of the coastal. Even better for us.
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This morning's weeklies went a bit warmer in February, but its cold predictions were too extreme to begin with. Still plenty cold, with a coastal signal around Feb 1 and then again another storm signal just after mid-Feb. March starts with a warm up.
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With the sleet/ice, it will be a much higher impact than a pure 6-12" snowfall and remain that way for a good while due to temps afterward,
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I wonder if euro is overdoing the micro-climates using a resolution that is too coarse for that purpose.
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That one may yield better results for you. Hopefully it'll have a CCB that throws some of that back to us west.
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Small tip on interpreting 850 anoms - our climo minimum is -4C, so even if it's "anomalously warm" by 3 C, it's still -1 May not be worth much since it's an AI model and I don't trust thermals (yet), and there are other levels where the warm nose could be strongest (probably 750-800 mb). Mesos will help us figure that out as we get closer in.
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Gfs and euro came into much better agreement on both track and mix line. The only difference is gfs flips us back to snow and keeps it going for another few-several hours, while euro dry slots us after a brief bout of sleet. Dry slot may actually turn out to be freezing drizzle/snizzle.
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Was so tired last night that I couldn’t even make it to the 0z gfs run. When I woke up, I saw the “hot” flag on this thread so I knew this would be really good… or really bad. Looks like we’re in good shape!
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The shaded colors illustrate it well. I think its an offset and they cancel each other out
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So about the same strength and a tick further back. If nam is ingesting the new data, this hasn’t really changed anything imo. All comes down to the NE wave now
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I’m also starting to think that the new data from the southern piece may not even change things all that much. Everything comes down to what’s going on over Canada. Hope they ingest data from up there.
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Less phasing, more confluence (TPV up top that wasn’t shown in 12z)
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Hopefully they’re just narrowing things down and meet in the middle or even closer to Euro’s side, then we’re fine. Unfortunately it’s a bit of a forum divider in terms of mixing.
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Yeah west Loudoun stays all snow this run verbatim. I flip for a bit, but not before 14” (again, verbatim)
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This is after 12 hours of snow, 6-9 hours heavy.
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700mb temps - 0 line briefly touches DC on one panel then collapses south.
