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MN Transplant

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Everything posted by MN Transplant

  1. MN Transplant
    18Z HRRR looks ok as long as you have reasonable expectations. DC loses the column just prior to 15Z with about 0.50" QPF.
  2. MN Transplant
    Disasterclass by the GFS in the past few days. From a weak 850 low that let the cold hang in, to an 850 low near Clev/Pitt like every other model had.
  3. MN Transplant
    ICON 10:1 trend. Slight north bleed, but serious consistency.
  4. MN Transplant
    Hard to tell with 6-hr panels, but the ICON looks like ~15Z changeover and maybe 0.5-0.6" QPF by then. 10:1 snow maps look like a hold from 06z. Edit - if you want consistency, the 10:1 snowfall on the ICON through 18z has been between 5 and 6" for DC for the past 7(!) runs.
  5. MN Transplant
    I really hope we don't have to cut the NAM precip by 1/3rd like we used to!
  6. MN Transplant
    The RRFS doesn't even look plausible with the precip shield, but it is ~0.4" in DC before the flip.
  7. MN Transplant
    It isn't necessarily whether the NAM is correct, it is that we'd hope to be narrowing the goalposts by this period. I wanted to see the NAM come back to the fold, not double down.
  8. MN Transplant
    Minor models: FV3 remains cold. 17-18Z changeover in DC. 0.8" QPF to that point 06z HRDPS is in the middle with a 14-15z changeover. ~0.65" 06z MPAS-HTPO is about 14z, with lighter precip ~0.4"
  9. MN Transplant
    Another interesting divergence in the models - surface temps. 00z Monday (7pm Sunday) HRRR: 27 DC, 20 Frederick NAM Nest: 28 DC, 29 Frederick RDPS: 20 DC, 17 Frederick Euro: 27 DC, 21 Frederick GFS: 23 DC, 18 Frederick
  10. MN Transplant
    There is less than a quarter inch of precip from changeover at 12z to 18z for many of us.
  11. MN Transplant
    Another dud of a NAM Nest run. Changeover at 7am in DC. Less than 0.4" QPF to that point.
  12. MN Transplant
    Parent NAM (ugh) is still a morning changeover, but it looks like ~0.5" QPF, so same ballpark as the HRRR. Not a catastrophe.
  13. MN Transplant
    The 06z HRRR was able to "beat back" the mix line in the late morning period. It doesn't happen on this run, and it is more NAM-like in flying the mix line north. Not nearly as bad as the NAM though.
  14. MN Transplant
    DC loses the column between 14-15z, just shy of 0.5" QPF. So, the HRRR is probably a 5-7" event before the sleet.
  15. MN Transplant
    I'm not sure that I'd completely characterize it as a "thump", given that the HRRR is 0.05" QPF per hour from 09z to 14z, but if we do score favorable ratios it'll be a nice period.
  16. MN Transplant
    DCA made it to 10 this morning with open water surrounding it and no snowcover. That is serious cold.
  17. MN Transplant
    6.8 for the low. That would be my min for a bunch of winters. Probably will beat that this week.
  18. MN Transplant
    The surface didn’t warm as much as the HRRR. Stays around 25 in DC and the freezing line is east of the Bay.
  19. MN Transplant
    About 0.40” before the flip in DC (using 13z). So, probably 4-5”.
  20. MN Transplant
    We took a step backwards with a stronger (the strongest yet) 850 low in Ohio.
  21. MN Transplant
    The 3km NAM is the worst run so far for DC. Only about 0.3" before the flip. Pronounced warm nose between 750-800mb.
  22. MN Transplant
    Parent NAM still changes DC over at 12z, but at least there is a bit more precip by then. But really, we should be looking at the 3k from now to the event.
  23. MN Transplant
    Lord help us all for looking at the HRRR at range, but it is a good 0.70" QPF before the flip in DC. Nice run.
  24. MN Transplant
    I just checked, and it is 6 consecutive 00z/12z Euro runs that have weakened the 850 low. Not massive changes, but much, much better than going the other way.
  25. MN Transplant
    Updated version
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