Script to create GFS plume line charts using GrADS

I am looking for a script to create plume charts in the style of the one in the attachment. This script should:

1. Use GEFS-data via Gribfilter or sdfopen via NOMADS to download the data for latitude 52.5, and longitude 4.5.
2. Parse the data only using the variable TMP2m.
3. Generate the plume chart showing all ensemble members in light green and the ensemble average in an thicker red line.
3. Write the result as a PNG-image.

Please note: when using gribfilter (and g2ctl and gribmap): use a subdirectory to store all grib, ctl and idx-file.

I only need the script and an example of the output png, nothing else.