Cloud over central and southern NSW with a low and front is causing showers and thunderstorms, some severe. Skies are clearer over northern parts of the state under dry westerly wind.
In December 2014 we upgraded our lightning network to the latest in sensor technology as used by the world's leading meteorological agencies. This has resulted in changes and improvements to the lightning data you will now see. The main changes are:
21:52 EST Parts of Sydney and the Blue Mountains have been blanketed by large hailstones as a severe thunderstorm moves across the area.