Very high and severe fire danger warnings will be in place across NSW over the coming days for an extreme heatwave expected to hit the state.
Firefighters are urging communities near blazes in southeast NSW to remain vigilant, with high temperatures lingering through the weekend.
"Elevated fire dangers are set to return over coming days. It is important that you're prepared in the event a fire threatens," the NSW Rural Fire Service tweeted on Wednesday.
Bureau of Meteorology acting state manager Jane Golding said ongoing fires, dry conditions and increased temperatures would cause an elevated fire risk.
She said temperatures in central and western NSW will surpass 40C this weekend, making for some uncomfortable evenings.
This is because a system of hot air moving south of the Australian continent will help drag hot air across the NSW coast.
"Broad areas of western NSW, out towards the South Australian border and into the western slopes may not drop below 30 degrees for some nights over the next few days," Ms Golding said in a statement on Wednesday.
"The difference in temperatures for some places from Saturday to Monday will be 15 degrees."
There are currently more than 70 fires burning across the state, while the housing toll for this bushfire season is almost 2400.
The death toll climbed to 25 on Friday when a 59-year-old man's body was found in a NSW south coast home.
Three US firefighters also died on Thursday when their aerial water tanker crashed northeast of Cooma. Video of the incident on Wednesday emerged online as the men's families visited the Peak View site.
The footage shows the C-130 Hercules dropping pink retardant on a bushfire before the tanker disappears into thick smoke and an explosion rings out.
A NSW Police spokesman on Wednesday said the force was aware of the video "and it will form part of the coronial brief of evidence".
NSW Labor, meanwhile, has written to the NSW government requesting that the first sitting day of the parliamentary year is dedicated to the commemoration of the 25 bushfire victims and their families.
Opposition leader Jodi McKay in a letter to Premier Gladys Berejiklian requested the suspension of parliamentary business on February 4 and the movement of a motion of condolence for NSW bushfire victims.
Ms McKay also asked for flags around NSW to fly at half-mast.
"I would be honoured to second this motion and I believe all members should be given the opportunity to speak," Ms McKay wrote.
Australian Associated Press