MELBOURNE — Soaring temperatures and strong winds stoked bushfires in Australia's southeast on Thursday (Jan 23), with Sydney forecast to hit 41 degrees Celsius following a few days of cooler weather.

A fire in the Snowy Mountains region and one in the Bega Valley on the south coast of New South Wales (NSW) state both flared up, with emergency authorities warning residents to get out if they did not plan to defend their properties.

"Fire dangers are just starting to peak, and we're in for a long afternoon and night across many areas of NSW," the state's Rural Fire Service said on its Twitter account.

The Bureau of Meteorology warned that "damaging winds" were driving up fire dangers in some regions, while the country's biggest city was again forecast to wallow in hazardous air quality levels under smoke palls from some 90 blazes burning across the state.

Since September, hundreds of wildfires in Australia have killed 29 people as well as an estimated 1 billion native animals, while incinerating 2,500 homes and a total area of bushland one-third the size of Germany.

The disaster hit the Christmas and summer holiday season, emptying out caravan parks and hotels, devastating peak earnings for businesses dependent on domestic and foreign tourists.

The Australian Tourism Industry Council estimated the revenue loss industry-wide at A$2 billion ($1.4 billion), including forward sales and the physical damage to tourism facilities across regions ravaged by bushfires.

"Whatever the numbers ultimately land at, it's had a significant impact," said Mr Simon Westaway, executive director of the council, which represents small and medium-sized tourism businesses.

Cancellation rates hit 100 per cent in fire-affected areas while tourist facilities even in areas not affected by fires were hit with cancellation rates of around 60 per cent, and there is evidence of international booking cancellations too, he said.

"People see a state of emergency and don't know if they'll be able to get in or out," Mr Westaway told Reuters. "This contagion has really swept across the industry." REUTERS