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Everything posted by WxUSAF
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Snowflakes in Columbia! 5 of them!
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I did a way-too-early look at GFS soundings. Lift is obviously not strong given the weak low and lack of strong frontogenesis, but there's a deep dendrite growth layer throughout the storm. Should be good for nice ratios.
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He's going to get the WAA snows with like 20:1 ratios while you and I smoke stratus and then the CCB will give us all a couple inches and he'll get the backside deathband from that as well. Happens every time
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yup, was just thinking about this. I'd rather go back to a juiced up WAA overrunning with a primary low in KY that transfers to the coast. GGEM is more like this with about the same result given a weaker CCB from the coastal.
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I completely agree. I'd love a warning event of course, but a cold powder event that's spread out over 24+ hours will be fun. Bring it on.
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Interesting that GFS is showing the same as the ICON with a 2-phased storm for those of is from DC-north. WAA snows provide 1-2", then a brief pause while the coastal forms and then we get into the CCB.
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@Bob Chill last Tuesday @Bob Chill today
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If the FV3 has shown any clear bias thus far, it’s to over amplify systems.
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Exactly. As you said a day or two again when the northern stream gets out of the way, there's room for this to amplify and come up the coast. Result is a widespread warning-level event for us.
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Northern stream is less suppressive and shortwave is stronger/deeper. A good combination.
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5+? More like 4.5 my dude. Inside 4 days with tonights 0z runs. Don't short me my half day of improved forecast confidence!
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At least I have a storm to track to pass the time! If Randy would start paying me for my mod duties, maybe I could actually pay my bills!
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Both means show solid advisory/low-end warning criteria for the entire subforum. Huge freaking win. Hopefully we keep it up for another 100 hours.
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#rightwherewewantit #northtrend
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Anyone with Ukie? Hearing it was a tick better?
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Damn long-range GEFS looks tasty with the PV stuck underneath the -AO/-NAO and it leaning toward the 50/50 region.
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GEFS looks good around the 18th today. Less weakness up near the Lakes.
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Let's have more discussion on what officially constitutes a "trend" and why we probably aren't getting a 12-18" snowstorm. I'm still not clear on those points.
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Thanks @tombo82685! I knew the Euro Op was run at 6z and 18z (with limited durations), but didn't realize they ran a full ensemble as well. Nice to see the improvements on the 6z.
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Cranky and HM with a good back-and-forth on twitter this morning regarding this storm and the season in general. Two relevant bits:
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Per @tombo82685 on that "other" forum, 6z EPS bumps the 2" line to the Potomac and then east to Wes. Bigger area of 4"+ also along the Blue Ridge.
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Ukie was decent last night apparently? 1-3”?
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Euro has been about 0.5-1.5” for most of us the last couple runs. More on the west slopes of the ridges and farther south.
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6z op GFS is bad solely because the northern stream s/w is out ahead of the storm and acts to suppress it rather than behind it where it amplifies it. 6z FV3 is still behind the storm and that's why it's still a major hit. Hard to ignore the Euro being so consistent though, especially when there are more reasons than usual to suspect the GFS. Still, I can't recall seeing a broad area of precipitation in IL/KY/IN that just evaporates when it gets to us if it's supported by a southern stream s/w and low pressure.
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