Looks like it must be the rainy season!!
At YSNF in Australia. Found this one while flying one of the legs of the VFR World Tour on IVAO..... 
So after I landed the Piper Seneca I was flying for that leg, I fired up the ol' MD500, and took a better look, and got a couple pix.....




So after I landed the Piper Seneca I was flying for that leg, I fired up the ol' MD500, and took a better look, and got a couple pix.....





