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Precip Accumulation is extremely high with NMM

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New member

I'm having some issues with the WRF-NMM (version 3.9.1) and precipitation output. The model is computing unrealistically high precip totals. Sometimes as much as 30 inches in 36 hours in more than a few locations (in weak environments). I've tried countless combinations of parameterization schemes, eta_levels, initial/boundary conditions, resolutions, diffusion/dampening options etc. I've been at this for about 4 months, and I'm still not getting anything that could be even remotely reasonable for accumulated precipitation. The model does a great job with precipitation placement at times. It would be great to have some reasonable QPF as well. namelist.input/wps is attached for my current configuration. Currently using the HRRR for initial/boundary conditions. Combinations of GFS/NAM/RAP were resulting in the same issue. Additionally attached most recent running precip accumulation figure. Any tips on how to resolve this would be outstanding. Thanks!


model compiled with GNU fortran 4.4.7, netcdf 4.1.3


  • namelist.input
    3.4 KB · Views: 45
  • namelist.wps
    1.2 KB · Views: 52
  • WRF_TotalPrecip[36].png
    345 KB · Views: 543
We no longer support WRF-NMM. Hope someone in the community may have some insight about this issue.

Ming Chen