[8][9] The border between the South and North White Carniolan dialects is rather clear; it was already defined by Tine Logar.

[12] According to what is known today, the dialect ranges from Adlešiči and Preloka north to Krasinec, west to the Kočevje Rog Plateau and along the Kolpa River at least to Stari Trg ob Kolpi, apart from the aforementioned Serbian villages.

Differentiation between the North and South White Carniolan dialects occurred in the 15th and 16th centuries, when the Ottomans started attacking Bosnia and Dalmatia.

Therefore, today the White Carniolan dialect is split based on how much influence it received from Serbo-Croatian.

It also underwent the same six accentual changes as the North White Carniolan dialect: *ženȁ → *žèna, *məglȁ → *mə̀gla, *sěnȏ / *prosȏ → *sě̀no / *pròso, *visȍk → vìsok, and *kováč → *kòvač, but the southern microdialects have also partially undergone the accent shift *kolȅno → *ˈkoleno.

[14] Alpine Slovene *ě̑ has evolved into ḙː in the north, ẹː in Vinica and Preloka (in the southern part), iːe/ieː in Stari Trg (in the west), and ẹːi̯ elsewhere.

Nasal *ǫ̑ evolved into ọː in the northernmost microdialects and in the south, and into uː in the middle (Dragatuš) and east.

Long old acute vowels and the short neoacute (those after accent shifts) became short; this is a feature of Serbo-Croatian dialects, and so this was probably influenced by the immigrants: Alpine Slovene *l turned into ł, *u̯m- turned into xm- in the northern, eastern, and southern microdialects, and into ɣm- in the western microdialects.

Another feature is that only the northern microdialects devoice non-sonorants before the end of a word; elsewhere they remain voiced.