05/11/2016 12:10 PM AEDT | Updated 05/11/2016 2:30 PM AEDT

Over 100 Firefighters Battle Massive Blaze At Sydney Car Yard

Strong winds are fanning the intense fire.

HuffPost Australia/Luke Cooper
Billowing smoke can be seen coming at a massive fire in Revesby on Saturday morning, 5th November.

Fire season has hit NSW in ferocious fashion, with more than 100 firefighters battling a massive blaze engulfing a Sydney car wrecking yard and over 30 bushfires burning across the state.

The car yard fire, at Mavis Street in Revesby, is burning out of control and at risk of spreading to adjoining properties fanned by strong winds, a Fire and Rescue NSW (FRNSW) spokesman told The Huffington Post on Saturday.

An ambulance spokesman said paramedics had so far treated 1 man for burns while a number of others were being monitored for smoke inhalation.

FRNSW said 2 buildings at the yard have been destroyed in what it described as an "intense" blaze at the site, with lots of smoke billowing from the yard.

Huffpost Australia/ Luke Cooper
Ambulance services on standby at Revesby.

FRNSW said more than 100 firefighters and 20 trucks were at the scene.

The yard was "well alight" and conditions were challenging because of strong winds and a big fuel load for the fire to feed on at the site, the agency said.

"This is a very serious fire, very volatile," FRNSW Commissioner Greg Mullins told reporters at the scene. "This fire is still spreading ... it's quite a desperate battle."

He said 4 homes in the area had been evacuated in anticipation that a 30 kilogram LPG gas cylinder would soon explode at the scene.

Meanwhile, homes have come under threat from a bushfire burning at Castle Cove in Sydney's north. Crews are currently at the scene working to bring the blaze under control. A watch and act alert is in place for the fire. It has reportedly come within metres of homes

The Castle Cove fire is one of more than 30 blazes burning across NSW on Saturday as the much of the state experiences hot conditions and gusty winds.

Saturday's outbreaks come as large swathes of Australia head into bushfire season, with authorities warning residents to be prepared.

NSWRFS spokesman Ben Shepherd said even city residents should know how to stay fire-safe over summer.

"What is amazing is people still today are surprised when fires occur on the landscape," Shepherd recently told HuffPost Australia.

"We live in some of the most bushfire-prone land in the world. What we need to recognise, as well as on those bad days, is you need to take responsibility for yourself. Preparation is key because we can't guarantee a firetruck for every home."