heat_index_nws NCL and geocat function - [ncl_entry for heat_index_nws](https://www.ncl.ucar.edu/Document/Functions/Contributed/heat_index_nws.shtml) - geocat-comp: [heat_index](https://geocat-comp.readthedocs.io/en/stable/user_api/generated/geocat.comp.meteorology.heat_index.html#geocat.comp.meteorology.heat_indexl) - NCL receipt to heat_index_nws and heat_index
