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high risk

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  • Four Letter Airport Code For Weather Obs (Such as KDCA)
    KBWI
  • Gender
    Male
  • Location:
    North Laurel, MD

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  1. high risk
    LWX mentions the possibility of wind headlines over the higher elevations, but recent guidance suggests that wind advisories will be needed for most of the area Friday afternoon and Friday night.
  2. high risk
    Cams consistent with late evening heavy convection. Forecast soundings show elevated instability and support the possibility of thunder.
  3. high risk
    Pretty certain that the morning soaker will wrap up by midday or early afternoon. Then we go into scattered shower mode, and there is a clear convective threat around dinner time into the early evening. The low level shear will support rotation, but will any of the storms be surface-based? It still looks like the best chance at some modest instability will be over central and southern VA and possible the lower Eastern Shore. I'll be happy with some thunder and lightning.
  4. high risk
    My initial reaction was that tornado potential would be confined to southeast VA and the Eastern Shore, because widespread rain over the DC metro area would limit instability. Looking at CAMs, however, suggests that rain will likely end by early or mid afternoon for areas south and southeast of the warm front, and some decently high theta-e air will be available. With the intense shear forecasted, it won't take much instability to make things very interesting. The question, though, the track of the surface low. My money is still on a track that keeps the warm sector south and east of DC, but there are solutions that track the low further to the northwest which would put our area into the game later Sunday.
  5. high risk
    12Z Euro and our rapidly-aging uncle the NAM Nest definitely give credence to the idea that at least a chunk of our weekend will be messy.
  6. high risk
    Euro really wants to retrograde the coastal low and ruin the second part of the upcoming weekend.
  7. high risk
    Yeah, it's pretty clear that it won't be the 3-5 day event that guidance had been showing, but most of us should still get a nice soaking between now and Wednesday morning. (And there could even be a backdoor sneak attack from the coastal on Saturday if you want to buy into the ECMWF.)
  8. high risk
    Remarkably, the slower NAM timing yesterday seems like it’s going to be correct, and that hurts the setup here.
  9. high risk
    Besides the overall NAM Nest struggles this summer that you've documented, this looks to be a classic case of the NAM being too slow with the system, causing it to arrive at a very unfavorable time. Its timing is a clear outlier for now.
  10. high risk
    Morning CAMs suggest a heavy rainfall threat Saturday evening (timing unsurprisingly still somewhat in doubt). Good signal for convection spreading east ahead of a shortwave into an axis of very high PWs and some instability.
  11. high risk
    I was really surprised when this popped up on my Radarscope. The HRRR hates this event, and while WPC talked up the 850 mb confluence, it seems kind of subtle to me. That said, the RRFS likes it to some extent, as did some of the cams earlier today, and storms are indeed firing across central PA. I'll be surprised if anything makes it southwest of Baltimore, but it's worth monitoring for a while this evening.
  12. high risk
    It’s actually more likely the storms firing out ahead over northeast Ohio. That would be better, because we want these storms to arrive as early as possible.
  13. high risk
    The front is slower than had been shown, so the updated Day2 has expanded the SLGT back to the north. Still tons of CAM disagreement (of course).
  14. high risk
    Sorry. Bad wording on my part. The southeast PA reference was regarding where the complex heads as it moves out of western PA.
  15. high risk
    There seems to be growing consensus that an intense MCS will form over northeast OH and western PA late this afternoon and move southeast. While it (shocker) appears that the best threat will be over southeast PA, at least some of the complex should make it into northern MD and potentially into the Baltimore-Washington corridor later this evening or overnight.
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