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Segmentation Error

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New member
Hello everybody,

I have a namelist.wps with 3 domains as following:
parent_id = 1, 1, 2,
parent_grid_ratio = 1, 3, 3,
i_parent_start = 1, 91, 200,
j_parent_start = 1, 55, 110,
e_we = 301, 469, 547,
e_sn = 261, 358, 541,

map_proj = 'lambert',
ref_lat = 48.0,
ref_lon = -2.00,
truelat1 = 33.0,
truelat2 = 53.0,
stand_lon = -2.00,
while there is the message: "Successful completion of metgrid", There is a message of "Segmentation Error" in wrf.exe

NOTE: In ref_lon 15.0 and stand_lon 15.0 there is NO error. Everything is running properly.

Thanks in advance anyone who will spend his/her valuable time in examining this problem.
Can you please attach your full namelist.input file used for running WRF, along with the full error log(s) (if you have several rsl.error.* files, please combine them into a single rsl.tar file to attach). Thanks!
Hi kwerner,
my name is Christos and thank you for your help.

Attached you can find the namelist.wps, the namelist.input and a Tar file with rsl.error.

Best Regards,


  • Error.tar
    165.5 KB · Views: 18
  • namelist.input
    4.5 KB · Views: 20
  • namelist.wps
    882 bytes · Views: 18
Thanks for sending those. I can see several CFL errors in your rsl* files, which indicates that the model has become unstable. Take a look at this FAQ that discusses ways to tackle this problem.

Additionally, I would recommend trying to use more vertical levels - maybe 45-50. It's also possible that you're not using enough processors for the sizes of your domains. This FAQ discusses how to determine an appropriate number of processors.