Page "Austrian German" Paragraph 24

While strong forms of the various dialects are not normally fully comprehensible to Northern Germans, communication is much easier in Bavaria, especially rural areas, where Bavarian dialect still predominates as the mother tongue.

The Central Austro-Bavarian dialects are more intelligible to speakers of Standard German than the Southern Austro-Bavarian dialects of Tyrol.

Viennese, the Austro-Bavarian dialect of Vienna, is most frequently used in Germany for impersonations of the typical inhabitant of Austria.

The people of Graz, the capital of Styria, speak yet another dialect which is not very Styrian and more easily understood by people from other parts of Austria than other Styrian dialects, for example from western Styria.