Severe thunderstorms are likely to produce large hailstones and damaging winds in the warning area over the next several hours. Locations which may be affected include Newcastle, Gosford, Sydney, Wollongong, Nowra, Batemans Bay, Armidale, Orange, Canberra, Goulburn, Tamworth, Wagga Wagga, Cobar and Bourke.
See the full warning here.