Time Machine disk space running out of space?

Hi all, my TM is 53 GB in size and takes couple of backups daily. Now only 8GB space is left and soon it will be running out of free spaces. So, my Q is Will the TM prompt me when disk space is over or Should I go into TM volume and delete some data (folders) in order to grab atleat 20 GB of free spaces?



Please advise me.:confused:

via ehMac.ca http://ift.tt/1ft40mp