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vortmax

Meteorologist
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Posts posted by vortmax

  1. We'll see how the 12z disc goes:

    Based on the latest available trends and guidance, a solution toward the 12Z ECENS mean will be preferred across the Western U.S. and offshore the West Coast after 36 hours, with a solution toward a compromise of the 00Z ECMWF/12Z ECENS mean and 00Z GEFS mean across the Eastern U.S. after 36 hours. The incorporation of the GEFS mean will be out of respect for the more progressive trends at least seen out of the NAM/GFS solution over the last 24 hours.

    Day 3 Fronts and Pressures

  2. 1 minute ago, OSUmetstud said:

    Ty, Its a slight improvement over the current gfs but it still lags the ecmwf and ukmet significantly in verification score. Its also significantly cold biased through much of the lower trop. Its not operational yet so they can still make tweaks (once the govt reopens, of course). 

     

    bias_day3_T_P850_G2NHX.png

    cor_day5_HGT_P500_G2NHX (2).png

    Question is, how well is it doing for this storm? 12z should clear the air a bit.

  3. 9 minutes ago, Thinksnow18 said:

    So is the winter storm watch awfully long in duration? Most local models have snow ending sunday afternoon and long range models do not do well with lake effect/enhancement so what would be the reason for the Sunday night and Monday time frame?

    I'd guess residual LE and blowing/drifting snow (especially due to dry nature and high winds).

  4. 10 minutes ago, OSUmetstud said:

    I think the quicker trend is important to make this bigger for ny. 18z ecmwf was quicker and better...same with the 18z gfs and fv3 gfs. The 18z ggem appears to be slightly faster than the 12z. I think the forum wants to see that trend continue. Even if the "B team" is 30 percent correct...that will help a great deal. 

    Also, very anomalous pwats ahead of the system could cause some undermodeled convection pumping latent heat release into the downsteam ridge. 

     

     

     

    Trying to wrap my head around this. So would that process enhance the downstream ridge causing a more NW track?

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