  IceCube analyses which look for an astrophysical neutrino signal in the
southern sky face a large background of atmospheric muons and neutrinos created
by cosmic ray air showers. By selecting starting events in the southern sky,
atmospheric muons and neutrinos with accompanying muons are rejected, producing
a sample with high astrophysical neutrino purity at lower energies than
northern sky samples. Our new selection method looks for muon tracks from a
neutrino interaction with a vertex contained inside the detector volume by
using the good pointing resolution of the track morphology to create an event
specific veto region in the detector to reject entering tracks. This starting
track event selection has a high astrophysical neutrino purity above 10 TeV at
declinations less than -30$^{\circ}$ which makes it ideal for use as a southern
sky realtime neutrino alert stream. We will discuss neutrino point source
searches using this event selection and look at the advantages of the starting
track alert stream for multimessenger astrophysics.
