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Math/Met

Meteorologist
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Everything posted by Math/Met

  1. That's a really interesting report. It sounds like the snow equivalent to what I've seen at Camp Creek a few time during mountain wave events. Just a few clouds, but you can get bursts of huge rain drops.
  2. The way it is modeled right now, the southeast flow at 850mb is really going to be difficult for us for awhile. In these CAD situation in WNC, it usually takes a really long time for the flow to become more favorable for us. A lot working against us at the moment.
  3. The 06z GFS would be a good way to avoid most of that. It wasn’t perfect for the valley, but it had a lot of nice features. The low stayed far enough south to keep the 850mb flow more east verses southeast, and there was an inverted trough extending up the mountains (provides lift and helps maintain a down valley flow). The 12z GFS changed the 850mb flow to a SE direction. That would cause a lot of downslope problems for many in East TN. Too early to worry about the details though.
  4. Agree. There are some subtle hints of sinking air in that area at the lower levels. It’s not very significant, but it could have a slight effect on temperatures in those areas. Hopefully the overall dynamics of the system will overcome it, but it's hard to ignore when models pick up on it (speaking from experience with my area).
  5. Greeneville hail from earlier today. Taken about 30 minutes after the storm.
  6. 1.75 at my house. No complaints considering that these types of systems (with a downslope component) usually don't work out well for most of Greene County. That actually takes my seasonal total to 15 inches, so I'm happy so far.
  7. Thanks for the wind obs. That's basically what I was referring to in my post from earlier today with the sounding showing a wind profile matching what you'd normally expect from a downslope event. I just looked at the 925mb winds (correlation with downslope winds), and the RAP starts to diminish the SE flow at that level after 06z.
  8. Anyone have the 18z Euro snow map. I changed subscriptions and no longer have it.
  9. I thought this was interesting in terms of seeing how it plays out tonight. GFS sounding near Greene County. The sounding suggests snow, but the wind profile is more consistent with a downslope event. An unusual situation. I have a hard time believing that would actually be snow in my area at that time with that wind profile, but that's what it shows. After that, the wind shifts and downslope stops being an issue.
  10. I'm not a fan of the GFS increasing downslope flow over the mountains. At least for my area.
  11. Carver, Just wanted to say that you do a great job with these pattern discussions. It always makes for a good read.
  12. Feeling pretty good about this event in Greene County. Currently at 1.25 inches. With the RAP showing some support at 700mb and the coldest 850mb temperatures still being advected into the area, there should be continued development/enhancement as it interacts with the terrain.
  13. I agree. The direction and temperatures at 850mb should continue to improve this afternoon/evening for the NW flow areas.
  14. I think the 850mb vertical velocity chart is one of the most useful tools for our area. I don't see it posted often, but I always look at those. Especially when the DGZ gets close to mountain top levels.
  15. The mountain wave event has started at Camp Creek. Wind gusts currently around 70mph.
  16. Mrx has issued a High Wind Watch for the mountain wave event this weekend. This looks like the best setup so far this season. It checks most of the boxes in terms of various parameters for Camp Creek (and other foothill locations) to get very strong gusts Saturday night and Sunday.
  17. How much downsloping effects the event will be a close call. Just after I posted that, the 03z run came in with an improvement in NE TN…with a slightly more easterly component (rather than perpendicular) over the mountains near Greene and Unicoi Co for example.
  18. The HRRR in particular is showing a persistent SE flow at 850mb over the mountains. That would make it very difficult for temperatures to cooperate in many parts of the valley in a marginal situation. I hope that changes.
  19. I'm not suggestion that the RAP will be correct, but it has a more defined inverted trough centered over the mountains in the early part of that loop. There are many factors to consider, but that's what caught my attention. If that happens, then that could be a major help for some areas.
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