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WxChallenge 2011-2012 Season


phil882

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Despite the high getting out of control, I managed to move to around #200 today.

Tomorrow is the trickiest day so far. 700 mb temps are warmer than yesterday, but it is much drier with lighter winds. Close to a 30 degree difference between the high and low will be possible.

I am going slightly above guidance tomorrow, although I am tempted to bump the high up even more.

65/37/19/0

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I'm betting we get in on some more mountain wave action very similar to today thanks to the 500mb wind maximum being parked just to the NE of Riverton. The anticyclonic shear side of the jet should also promote subsidence and favorable conditions for lee waves that bring both high winds and adiabatic compression which won't likely be properly accounted for on guidance.

My #'s

65F / 39F / 20kts / 0.00

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67F/41F/24kts/0.00

I wish my high forecasting skills would transfer over to the low, but no! If you want a better look at air parcel trajectories, which can help in forecasting the temperatures, and I am talking to everyone here. You should check out the HYSPLIT model on NOAA's Air Resources Laboratory page! Some cool stuff!

http://ready.arl.noaa.gov/hysplitout/10908_trj001.gif

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67F/41F/24kts/0.00

I wish my high forecasting skills would transfer over to the low, but no! If you want a better look at air parcel trajectories, which can help in forecasting the temperatures, and I am talking to everyone here. You should check out the HYSPLIT model on NOAA's Air Resources Laboratory page! Some cool stuff!

http://ready.arl.noaa.gov/hysplitout/10908_trj001.gif

care to enlighten us on the technique? :P

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Thoughts for tomorrow: The low is tricky as always, but I think tonight we should see calmer winds as a ridge moves over the region. The jet is finally moving off further to the northeast and there is a split in the upper level flow right over WY. With the weaker upper level flow, expecting to see a lot less mixing tonight with colder temperatures at the surface as the boundary layer could decouple from the upper levels. Tomorrow is also tricky because the winds will likely start to pick up in the late afternoon and evening as a weak upper level impulse once again causes the jet to dive over the northern portions of WY. Its hard to time when that will occur, but if its earlier in the period than forecasted, it could help enhance adiabatic compression and raise the temperature further.

My #'s

66F / 36F / 17kts / 0.00in

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