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Terpeast

Meteorologist
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Everything posted by Terpeast

  1. I think 1-3” before the flip is a reasonable call Loudoun-MoCo and west. Fairfax county might struggle to reach an inch. Higher elevations or west of 81 may see 2-4” locally 5” Best we can hope for is that thermals tick a bit colder and we hold the flip off an extra hour or two
  2. Yeah we should start looking at mesos now, its 60 hours till game time. CMC - careful what you wish for. Brutal cutoff in snow amounts. I’d prefer a more uniform thump for most of us even if the jack is less snow. Lets save the biggie for the better pattern up ahead
  3. Not sure why this run sucks. Synoptically it looks the same to me. Slp and sfc high placements shuffle a bit, thermals fluctuate a tiny bit. It’s noise. Nothing really changed Both 0z nam and gfs are finally in agreement. Well, for this run at least
  4. Looking at the 0z nam and 18z gfs just now… I feel that trailing vort might do some weird things if it gets closer to the backside
  5. Edited my post to say i was being sarcastic, but I’ll wait until after 1/7-1/9 to update my forecast if need be
  6. MJO gonna go ape in the warm phases Nino isn’t enough to overpower the nina base state 11th straight warmest winter for NE, bad juju there It’s never going to snow again, so we’re f’ed /sarcasm
  7. Happy to see the HH GFS, but kinda hard to get too invested when models can't even agree on what kind of storm this is going to be... or if there is even going to be one.
  8. I can see the LWX office going “wtf.. let’s call the New Mexico office to get a damn balloon up there”
  9. This is now within 72 hours, so maybe we start looking at the ops and mesos. Hope the mesos pick up on a colder bleed down that the globals might be missing. Wishful thinking maybe, but I've seen this movie before.
  10. When does it have precip starting? I’m still on 6z on TT
  11. I'm at 325 ft and the creek below me is probably 300' on the dot
  12. Still a TPV in Ontario. That's a pretty cold and stormy look
  13. Still in the game, but nailbitingly close. With it being so marginal, I'm mentally dividing 10:1 snow maps east of the blue ridge by half. (not that we should be looking at these snow maps anyway) Can't do much model analysis because I'm at work
  14. LWX AFD if not already posted (from 3:50 am). Their office has been handling this storm better than any of the models i applaud them for their restraint. They also slate the start of the storm during Friday night, which could help us with the temps. A strong southern stream mid/upper-level trough over the Mid-South Friday night quickly moves northeast as it phases into a flat trough over the OH Valley/Mid-Atlantic on Saturday. At the surface, an associated area of low pressure develops along the northern Gulf Coast and very quickly moves across the Southeast states through Saturday morning. The surface low becomes better organized as it crosses eastern NC into far southeast VA, where it moves offshore along the NC/VA border. Precipitation overspreads the area from southwest to northeast starting late Friday night into Saturday. Temperatures Friday night are forecast to be below freezing for most of the area. However, there is considerable uncertainty to the east of US-15 as easterly winds advect in a warmer marine airmass and strong WAA ahead of the surface low help to increase temps along/east of I-95. All that being said, precipitation is likely to start out as snow west of US- 15 and a rain/snow mix along/east of US-15. As the morning progresses, areas east of I-95 are most likely to transition to a cold rain, with steady snow west of US-15, and a mix in between. Having the surface high well to the north and weak onshore flow proceeding the surface low are not generally favorable for accumulating snow along I-95. Any chance to see higher snow totals there will be dependent on higher precip rates and wet bulb effects overcoming the marginal temperature profile. Still, p-type is going to be highly sensitive to the track of the low, with a tight rain-snow gradient likely. Significant snow accumulations are most likely along/west of the Blue Ridge and Catoctins. Where precip is more likely to be in the form of rain, near and east of I-95, there is the potential for instances of flooding. Continue to monitor the progress of this storm as the weekend approaches.
  15. The deck has been reshuffled. Totally different evolution from 12 hours ago and 24 hours ago
  16. Move back to Ashburn and maybe you’ll change our luck
  17. Same. I just moved back here a year and half ago. Even if it’s just 3” imby as depicted by the NBM, that’ll be my first good event as well.
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