Early afternoon on the 18 February 2012, an isolated thunderstorm built up over the Oberon Plateau and appeared to track NE. I managed find a good location at Portland (Near Lithgow) to watch the cumulonimbus cloud tower push quite high and bulge out. Following that further thunderstorms built up around the area. Eventually too many thunderstorms were building or trying to build. I found that there were too many storms and shower cells building. I then left the area, headed north and caught the Capertee storm (Separate post).