This is the official Colombian civil aviation authority weather site where you can find radar imaging: http://meteorologia.aerocivil.gov.co/radar/index/aoi/CRM/Reflectividad de Base 0.5 deg
As far as I know, there is no FTP where you can download the data. However, I'll try and search for one.
I've seen some METARs for Colombia are a bit outdated. You can find them here: http://meteorologia.aerocivil.gov.co/obs/preview/67
This is the official Colombian civil aviation authority weather site where you can find radar imaging: http://meteorologia.aerocivil.gov.co/radar/index/aoi/CRM/Reflectividad de Base 0.5 deg
As far as I know, there is no FTP where you can download the data. However, I'll try and search for one.