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WxUSAF

Moderator Meteorologist
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Everything posted by WxUSAF

  1. Walking on the mall in DC and need to find some indoors air conditioned building soon
  2. I’m here and I am on vacation actually lol. Just not going to spend too much time parsing D9+.
  3. Probably because the strat vortex is very strong, but also has not been well coupled to the troposphere this winter.
  4. All 4 major airports saw similar departures from this cold air: 24th: ~ - 23F 25th: ~ - 15F 26th: ~ -12F All are running 2-3F BN for December. Will walk some of that back the next few days, so maybe ending around -1F?
  5. The goalposts are moving so fast in here. Need to call in Justin tucker for the 72yd field goal into the wind.
  6. Also…by eye, it looks like the AO flips negative even sooner on the GEFS. Around the 4th.
  7. A shift to a more favorable longwave pattern remains steady around the 7th/8th. Not much else worth looking at IMO before this weekend assuming that doesn’t change.
  8. High of 32. Going to be a solid 96 hours at or below freezing IMBY by tomorrow.
  9. January’s gonna be rockin’
  10. You can see the temps cooling the last 48-72 hours of the ensembles. If that H5 look is right, temps will cool down fast. Point is, the torch looks temporary and so far the return to a better look isn’t getting can-kicked.
  11. Don’t think we’re going to get digital blue as a Christmas present, but we did get continued good H5 looks at D13 or so overnight. Better than coal and onions in our stocking I guess.
  12. High of 18, now back to 14. Also a high in the teens here in bel air. Merry Christmas weenies!
  13. -EPO chills our source region, but most of our big snowstorms do not occur with a -EPO.
  14. That plot shows the MJO hanging weakly in phase 7. MJO hasn’t really been a factor lately so I wouldn’t overly worry. A lot of variability the last 60 days or so (maybe even closer to 90) has been driven by the PAC jet and the EPO. All seems to be cycling on roughly 2 week timescales. We can already see signs of the EPO switching back to negative.
  15. Yeah, the same longer range ensembles suggest the Scandinavian ridge also redevelops, which could/should move toward the NAO space later in January.
  16. DCA struggles obviously in radiational cooling situations. This is mostly CAA, so temps are a lot more even inside and outside the UHI.
  17. 4.8/-9 now for MBY which is also the low. Lows at the airports so far: BWI: 7 RIC: 9 IAD: 7 DCA: 9 (!!!)
  18. Down to 8/-7. Don’t think subzero is reachable, but could be 2-4F in the morning.
  19. Been awhile. Never got below 10 last winter. Probably 2019 since single digits.
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