Severe thunderstorms and showers are possible across much of NSW and the ACT this afternoon as a cold front moves through.
Severe thunderstorms are likely to produce damaging, locally destructive winds, large hailstones and heavy rainfall that may lead to flash flooding in the warning area over the next several hours, it says.
Giant hailstones are possible for thunderstorms near the Queensland border. Locations which may be affected include Canberra, Cooma, Yass, Dubbo, Parkes, Wagga Wagga, Griffith, Narrandera, Cobar, Bourke, Wanaaring and Brewarrina.
The Bureau of Meteorology warns that, at 4:35pm, severe thunderstorms were detected on the weather radar near Adjungbilly, Mount Ginini, Goobarragandra (east of Tumut), the Bondo State Forest west of the Brindabellas, the Kosciuszko National Park west of The Brindabellas and Mount Franklin in the Brindabellas.
These thunderstorms are moving towards the east to southeast. They are forecast to affect Belconnen, Canberra Civic, Queanbeyan, Tuggeranong, Hall, Gungahlin, Canberra Airport, South Canberra, Weston Creek and Woden Valley by 5:35pm.
For the Snowy Mountains areas above 1900 metres: Damaging winds averaging 80 to 90 km/h, with gusts in excess of 110 km/h, are possible from Tuesday morning.
For areas below 1900 metres: Damaging winds averaging 60 to 70 km/h, with gusts in excess of 90 km/h, are possible during Tuesday afternoon.
Locations which may be affected include Nowra, Bowral, Braidwood, Goulburn, Cooma, Bredbo, Adaminaby, Nimmitabel and Khancoban.
The 30 degree temperatures in Sydney on Monday are about 8-10 degrees above average for this time of year.
Across the weekend the best rain in four years fell across the Far West of NSW.
For those living on the South Australian-NSW border they had not seen flooding like it since 1997.
Broken Hill alone received half its rain of last year in just 20 minutes in one storm on Saturday – 36mm.
