Hypothetical 240 hour snow Posted January 29, 2021 Share Posted January 29, 2021 3 minutes ago, BigCountry said: I'm definitely not any level close to the rest of you, but that seems fairly low at this point. My initial thoughts right now are more in the 6-10" range. For a broad area forecast I think 4-8, is a good total given that unless the transfer happens really early and the isentropic ascent falls apart, 2-4 from the WAA regime looks guaranteed. Then get another 2-4 from showers associated with the ULL. That basically leaves the Def Band moderate-heavy snowfall out of the equation, which would obviously bump up totals in favored areas... but that band is going to be narrow with some subsidence likely flanking it so putting that explicitly in the totals when we are only partially in the mesoscale model window (and not really in the CAM window) is risky. Link to comment Share on other sites More sharing options...
SnowDreamer Posted January 29, 2021 Share Posted January 29, 2021 That GEPS mean looks like every textbook I-95 MECS eta: map on previous page - trying to reduce clutter 5 1 Link to comment Share on other sites More sharing options...
AmericanWxFreak Posted January 29, 2021 Share Posted January 29, 2021 1 minute ago, frd said: Can you post a snowfall map please. go back a page 1 Link to comment Share on other sites More sharing options...
stormtracker Posted January 29, 2021 Author Share Posted January 29, 2021 1 hour ago, Hypothetical 240 hour snow said: Yeah so I guess the consensus is the CMC can't be trusted unfortunately, the EC solution where the band sets up further SE seems more plausible. ? Genuinely curious to see where you saw this consensus? 5 Link to comment Share on other sites More sharing options...
Interstate Posted January 29, 2021 Share Posted January 29, 2021 I can see at panel 36 on the H5 the it more negativity tilted to my untrained eye Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 29, 2021 Share Posted January 29, 2021 Pretty classic signature Monday off the mid-Atlantic (purple shading is QG omega amplification [diff. cyc. vort adv] term): 6 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 29, 2021 Share Posted January 29, 2021 Through 42hrs, the shortwave is a bit stronger and the confluence has eased slightly vs 0z. Definitely true at 48hrs... 4 Link to comment Share on other sites More sharing options...
LP08 Posted January 29, 2021 Share Posted January 29, 2021 H5 a little flatter than 6z. Heights slightly lower out in front at 45 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 29, 2021 Share Posted January 29, 2021 Lots of guidance has this initial band of snow, mostly through MD, around 12z, then maybe a short lull before the main WAA arrives a couple hours later. Euro has it too. Link to comment Share on other sites More sharing options...
LP08 Posted January 29, 2021 Share Posted January 29, 2021 Snow breaking out by 12z Sunday. 4 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 29, 2021 Share Posted January 29, 2021 Just now, BTRWx's Thanks Giving said: The tweet is protected. Just now, Kmlwx said: It's not visible to me either. Fixed my post. Apologies. Link to comment Share on other sites More sharing options...
WxUSAF Posted January 29, 2021 Share Posted January 29, 2021 Confluence has definitely bumped about 50-75mi north on this run vs 0z. We'll see what difference it makes. 6 1 2 Link to comment Share on other sites More sharing options...
AmericanWxFreak Posted January 29, 2021 Share Posted January 29, 2021 1 1 Link to comment Share on other sites More sharing options...
clskinsfan Posted January 29, 2021 Share Posted January 29, 2021 Huge thump for SW VA this run with the waa. 1 1 Link to comment Share on other sites More sharing options...
csnavywx Posted January 29, 2021 Share Posted January 29, 2021 Transfer is definitely a little faster on this run. Primary a touch weaker and further S to start with. 3 Link to comment Share on other sites More sharing options...
JakkelWx Posted January 29, 2021 Share Posted January 29, 2021 1004 SLP primary dying off in S central KY at hour 57. 1 Link to comment Share on other sites More sharing options...
stormtracker Posted January 29, 2021 Author Share Posted January 29, 2021 Don't know how this will end, but what I do know is that the Euro is way colder than the GFS at the same time frame 4 Link to comment Share on other sites More sharing options...
AmericanWxFreak Posted January 29, 2021 Share Posted January 29, 2021 1 1 Link to comment Share on other sites More sharing options...
psuhoffman Posted January 29, 2021 Share Posted January 29, 2021 come on capture and tuck....do it...you know you want too...just do it 7 1 6 Link to comment Share on other sites More sharing options...
stormtracker Posted January 29, 2021 Author Share Posted January 29, 2021 Could be a blip, but coastal is closer in to the coast at 66 hours than 0z 1 Link to comment Share on other sites More sharing options...
AmericanWxFreak Posted January 29, 2021 Share Posted January 29, 2021 1 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 29, 2021 Share Posted January 29, 2021 Just now, psuhoffman said: come on capture and tuck....do it...you know you want too...just do it The south trend is over, that's for sure. 5 Link to comment Share on other sites More sharing options...
AmericanWxFreak Posted January 29, 2021 Share Posted January 29, 2021 1 1 Link to comment Share on other sites More sharing options...
Ji Posted January 29, 2021 Share Posted January 29, 2021 has that double low thing going(Gfs used to do that alot right?) 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 29, 2021 Share Posted January 29, 2021 Through HR 72, temps don't appear to be an issue for DCA or even Wes. 6 Link to comment Share on other sites More sharing options...
Ellinwood Posted January 29, 2021 Share Posted January 29, 2021 Snow map. Very complicated setup with lots of caveats, but we seem to be converging on a moderate to major snow event across the Mid-Atlantic. IMO major decider will be coastal low development and resulting QPF for Monday. 23 4 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 29, 2021 Share Posted January 29, 2021 500mb way prettier through 72hrs. Sharper neutral tilted trough vs. 0z which was more positively tilted. 5 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 29, 2021 Share Posted January 29, 2021 From @Ellinwood 1 Link to comment Share on other sites More sharing options...
NorthArlington101 Posted January 29, 2021 Share Posted January 29, 2021 Just now, Eskimo Joe said: Through HR 72, temps don't appear to be an issue for DCA or even Wes. The problem is DCA is in a lull from roughly hr64-hr78. We'll see if it can make up for it at the end. Link to comment Share on other sites More sharing options...
ryanconway63 Posted January 29, 2021 Share Posted January 29, 2021 LOW is 200 miles NE at 18z Monday compared to prev run 1 Link to comment Share on other sites More sharing options...
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