The sweet note left by firefighters after saving NSW home

A NSW man has praised firefighters after receiving a heartwarming note amid horrific bushfires ravaging the state.

Thousands of residents throughout NSW remain on high alert with catastrophic and unprecedented conditions leading to what is feared to be the most dangerous bushfire week in the NSW's history.

The NSW Rural Fire Service warned the situation is so extreme they might not be able to save everyone and warned residents to act fast and get out early.

With firefighters battling blazes for days in Uranga, on the NSW Mid North, resident Paul Sefky praised them after they took the time to leave him a note after saving his home.

On Saturday, Mr Sefky shared a note on Facebook written by a member of the Uranga Rural Fire Service adding, “You people rock big time”.

“It was our pleasure to save your house,” the note from firefighters said.

“Sorry that we could not save your sheds.

“P.S. we owe you some milk.”

• The weather conditions that may turn catastrophic fire fears into reality

• 'We may not save you': Dire warnings as maps reveal horrific potential of fires

• The suburbs most at risk of bushfire as Sydney remains on high alert

• 'Safety highest priority': Hundreds of schools closed due to bushfire risk

Mr Sefky’s note has been shared more than 4000 times and one woman said it brought her to tears.

“I’m pretty sure they earned the milk,” she wrote.

Others called the note “amazing” and “beautiful”.

Kale Hardie-Porter, who claims to have been the man behind the note, wrote he’s glad Mr Sefky received it.

“Our crew of four did the best we could with what we had but unfortunately your two sheds didn't last a second. We took refuge in your house for a moment and that's when we discovered the fridge,” he wrote.

“Again it was our pleasure to do a little good in such horrendous conditions.”

A woman praised Mr Hardie-Porter and the rest of his crew as “true heroes”.

“You all deserve all the milk you can drink forever,” another woman wrote.

“What a beautiful act of kindness in the darkest of times. Community spirit at its best. Thank you.”

Do you have a story tip? Email: newsroomau@yahoonews.com.

You can also follow us on Facebook and Twitter, download the Yahoo News app from the App Store or Google Play and stay up to date with the latest news with Yahoo’s daily newsletter. Sign up here.