Authorities have issued emergency warnings for several blazes across NSW, after another day of extreme fire danger.

The NSW Rural Fire Service issued an emergency warning for a fire at Willi Willi Road, at Moparrabah in the Kempsey LGA, and another at Springwood Park Road, Cope, in the Mid-Western LGA on Monday afternoon.

“Leaving at the last minute is deadly. Leaving now is the safest option,” the RFS said.

There was also alarm for a fire burning at Bayshore Drive, about five kilometres north-west of Byron Bay. The RFS urged anyone in the area to conditions.

Shortly after 3pm, another advice warning was issued, this time for a fire at Tenterfield. The RFS said it was burning in the vicinity of Rocky River Road and Nelson Creek, about 30 kilometres east of Tenterfield.

“There are isolated rural properties in the area. Residents should prepare now,” it said.

The latest day of spring fire danger came as an extreme fire danger warning was also issued for parts of Queensland due to soaring temperatures. Multiple fires are already burning across the state.

The Bureau of Meteorology issued warnings for the Darling Downs and Granite Belt west of Brisbane, with temperatures forecast to reach 35 degrees on Monday.

Authorities were managing 18 vegetation fires across the state with more than 60 burning in the past 24 hours, Queensland Fire and Emergency Service said.

There was a stay informed warning for large parts of rural Queensland, and authorities were closely monitoring a fire in Deepwater, near Rockhampton.

Aircraft and waterbombing crews are on standby.

• See all NSW fire warnings and advice notices here
• See details of Queensland fire warnings here
• For information on bushfire alerts in the Northern Territory, see here

The weather bureau also issued fire weather warnings for much of NSW, including the far north coast, greater Hunter, greater Sydney region, New England, northern slopes and north western districts due to high winds.

Total fire bans are in place.

The NSW RFS said it had carried out hazard reduction burns ahead of Monday’s extreme fire conditions, with the burns suspended due to the weather warnings and strong winds.

The weather bureau’s Miriam Bradbury said there were gale force warnings for the NSW coastline from the Byron Coast down to Eden.

“Many parts of Australia are seeing high fire danger ratings, with a number of districts sitting in extreme,” she said.

“These extend from the mid-west coast of WA, all the way to north-east NSW, and the Darling Downs and Granite Belt in Queensland.”

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Damaging winds of up to 70km/h with peak gusts around 100km/h were expected in central NSW and from Wollongong to Forster, before easing later on Monday night.

There was also a warning for catastrophic fire conditions in the Northern Territory. In its Barkly District, several fires are burning and roads are closed.

“In such dangerous conditions, it is imperative that you seek advice from your local fire and emergency services, and keep yourself up to date with the weather conditions,” Bradbury said.

Extreme conditions will remain for the NT and Queensland on Tuesday, but north-eastern NSW can expect a cold front late on Monday.

The cool change will shift north throughout the week, but the heat will persist inland in Queensland and in the NT.

-with AAP