Not sure about FAJS but seeing that we use the same system we do have ''WEATHER RADAR'' if you can call it that. Its very limited and cant be used to vector aircraft around storms. At our station 60% of the time its not working. On the radar all you see is a blue or brown blob, depending on the intensity of moisture picked up, in the area of the storm. Blue can also just be a heavy rain shower. In durban you always have some blue on the radar due to the humidity in the air. The brilliant system we have throws the weather radar over the terrain clearance chart which means if theres a lot of ''blue'' on the radar you have to switch the WR off to see the chart.
For the training Q. We put a message on the datis that the pilots receive with the weather ie. Dual training on twr and/or app.