Tomorrow will be very dependent on any clear air. Thunderstorms tomorrow will most likely only initiate in any clear air, in which is most likely going to be in the Wimmera and Southwest, as the rain band clears these regions during the morning allowing for ample opportunity for surface heating etc ... in the afternoon. The other area of interest is the northeast ranges ahead of and with the rain band in the morning. Otherwise, there is a chance for isolated thunderstorms across the remainder of the state for the whole day, with a greater risk if cloud clears, otherwise conditions will be hampered for those other regions. The risk should continue in the afternoon I cannot see why it shouldn't, but as I said, cloud will hamper things. Check the discussion hopefully it provides more details, if it is unclear, let me know mate.
Might get a thunderstorm here overnight or early morning too, quite a bit of activity moving into southeast South Australia near the main band of rain at the moment. Mt. Gambier likely to see one. Interesting!! But not holding my hopes too high.
) but I'm in the process of building my own weather photo website... it'll be worth the wait, trust me! 
