Travellers are being warned to expect delays on roads, rail, waterways and in the skies as wild wintry weatherhits Sydney and other parts of NSW.
Residents in the Blue Mountains woke up to a blanket of snow on Tuesday as a cold front associated with a Tasman low swept across the state.
About five centimetres of snow settled on Katoomba, Blackheath and surrounding areas, with falls also recorded in the Central Tablelands.
"It's enough to cause road issues and enough to fold the branches of the trees from the weight of the snow," Bureau of Meteorology's Jordan Notara told AAP.
The ice and snow temporarily forced the closure of the Great Western Highway at Katoomba, Mount Victoria and Blackheath, as well as a section of the Bells Line of Road.
Snow has fallen in parts of southern Queensland with icy winds dropping the apparent temperature to below zero in other inland communities.
The Bureau of Meteorology says snow has fallen in Queensland's Granite Belt region, west of Brisbane, but flakes have been few and far between and it's not expected to settle.
Snow fell at Eukey, south of Stanthorpe, and the white stuff has also fallen over the border, in NSW.
"It was sleeting for maybe ten minutes, then some flurries of pure snow flakes started coming down," Ken Kato told the ABC from Eukey.
The arrival of a cold air mass about midnight has seen temperatures fall, but icy winds are making it seem much colder than it actually is.
