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WxUSAF

Moderator Meteorologist
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Everything posted by WxUSAF

  1. Snow depth is good to check against in marginal situations like this but I’m not sure I’ve ever seen actually accumulations that match snow depth forecasts. Even the December post-deluge changeover beat the snow depths by like a factor of 2.
  2. I love how on TT, the 3k NAM keeps accumulating snow even after the flip to rain.
  3. Next tuesdays cutter sets the thermal boundary for any follow up waves. GGEM makes that boundary much more favorable and has been consistently more friendly than the gfs. But gfs isn’t too far off… Late next week is still a time to watch closely.
  4. Under my new “I’ll take anything measurable” criteria for storm success, IMBY, I’ll take the gfs in a hot second. Far N/W folks probably like it a lot less though as it trims precip totals for the mountains.
  5. I’m taking the TT 3k NAM 10:1 snowmap as my final call, no takebacks, all in. In reality, it does show about 4 hours of pretty heavy snow from 16-20z IMBY. If that did happen…
  6. Even Webb is honking for the MLK day week this morning
  7. Flurries in Columbia per Mrs WxUSAF. Long range pattern verified!!
  8. Could go down like that. Most strong Ninos give us a 3-5 week heater and comes down to how many times we can capitalize.
  9. To be fair, it was pretty obvious by this time last year that we were almost certainly cooked. We weren’t even teased with D10-15 longwave patterns.
  10. Ha, I was literally coming to say that, for illustrative purposes, this is a potential big dog look. PV trapped under the -NAO with a strong southern stream wave forced to move W-E across the conus with arctic air locked in.
  11. Bummer. Good luck far N/W folks! This doesn’t look like the one that’s going to break the record long streak without 1” of snow for any of DC-Baltimore-Philly-NYC. Maybe IAD still has a chance?
  12. I guess. I think by 0z or 12z tomorrow the synoptic details are down to noise level changes and it just comes down to a few degrees in the 800mb to surface column. 18z is very slightly colder than 12z at 0z Sunday. Sharper temp gradient too. Still thumpy to start in the 18-21z period Saturday.
  13. Could about walk from places with <1” to 8”. Razor thin gradient.
  14. RGEM has that N-S oriented trough of warm air aloft like 12z euro.
  15. Yeah quite possible. That said, if it’s borderline, still could work out. But the confluence and high shifting north don’t provide much confidence things can shift. Could also be a precip rate dependent deal. Heavier precip progs might be colder and vice versa. Things to watch.
  16. Yeah, that’s why I was cautiously optimistic as the run developed. Then it just pushes warm air north with that trough. Maybe it’s real, maybe a fluke.
  17. That inverted trough (trowal maybe?) is sort of the killer. Not sure how real that feature is. I actually though euro looked decent/good before it got to us.
  18. In happier news, GEFS has The Look starting MLK weekend. PV trapped under a mega -NAO/AO with some ridging developing out west.
  19. That’s basically what the Ukie was also
  20. Then you’re in much better shape than the cities. I know the urban core of Towson can be warm though, so that’s something to watch as you get familiar with the microclimates in the area.
  21. I’ve seen the option C in the ensemble mix (I think based on snow maps posted), but not sure any op run has pulled that out (yet). Ops seem to be switching between A and B or some blend between them. Let hope Euro can pull a B here…
  22. It depends lol. And 95 is also close to, but not exactly the “fall line”. The fall line is the boundary between the coastal plain and the piedmont and elevation goes up between them. Your elevation and amount of urban heat island your particular location has is a big deal for snow totals in our area.
  23. Yeah it really sped up. Even if some of the bigger totals that have been shown came to pass, not good timing for snow day hopefuls on Monday.
  24. My snowboard is at 378.4251969 feet per the LiDAR map.
  25. Looks qualitatively consistent with gfs and GGEM with a solid thump and then mixing dependent on location.
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