The NSW Rural Fire Service (RFS) says an out-of-control blaze is posing an "immediate threat to lives and homes" at Tingha in the northern tablelands.

Key points: Bushfires at Tingha and Tabulam are again at emergency warning level

Bushfires at Tingha and Tabulam are again at emergency warning level The RFS says the blaze is moving quickly and posing an immediate threat to lives and homes

The RFS says the blaze is moving quickly and posing an immediate threat to lives and homes Homes have already been razed at Tabulam

An emergency warning has also been issued for a bushfire near Tabulam, in northern NSW, which has already destroyed homes.

The bushfire at Tingha has burnt 6,288 hectares so far and is spreading quickly in multiple directions under strong winds.

The fire has crossed Howell Road and is moving in a southerly direction.

It has also crossed Old Mill Road and is moving in an easterly direction towards Guyra Road.

All roads in and out of Tingha are now closed.

Residents are being taken on buses to the Guyra Showground according to the Inverell Shire Council and an evacuation centre has been established at the Bundarra School of Arts Hall.

The Tingha Sports and Recreation Club is also open for residents requiring accommodation.

The township of Tingha is under direct threat by the "mammoth" moving fire. ( ABC News: Caitlin Furlong )

The fire threatening the town is the worst the region has scene for decades, said Northern Tablelands MP Adam Marshall.

"RFS crews have even had to be pulled out from the front of the fire as it's so fierce," he said.

"Conditions are absolutely deplorable. This fire is raging."

Mr Marshall said air tankers are now being brought up from Victoria to help protect properties.

A separate fire near Tingha burnt through more than 5,600 hectares before it was downgraded. ( Supplied: Royal Hotel Tingha )

Extra police have also been deployed to door-knock homes and authorities are urging people not to leave evacuating to the last minute.

Tingha resident Dick Hayden sent his family to the evacuation centre but chose to stay and protect his property.

"It's really not looking good here," he said.

"Although Tingha doesn't have a lot of grass around as it is surrounded by a 3,000 acre common, that hasn't stopped the fire from coming across."

Conditions are expected to deteriorate throughout the afternoon as the area endures hot, dry and windy conditions.

Five homes razed at Tabulam

Meanwhile, police this morning confirmed five homes were razed by a separate blaze near Tabulam, which is still threatening properties.

That fire, west of Casino, has so far scorched nearly 2,590 hectares of land after it swept through the region in hot and windy conditions.

Strengthening winds have pushed the fire across Timbarra River, in the direction of Ogilvie Drive where crews are working to protect houses.

The eastern edge of the fire, south of Tabulam, remains quiet due to a successful backburn overnight.

Map Map showing fires near Tingha and Tabulam

Around Tingha, several schools are closed today, including Gilgai Public School, Tingha Public School, Bundarra Central Public School and Kingstown Public School.

NSW RFS Inspector Ben Shepherd said structures were lost at both of the major fire sites at Tabulam and Tingha.

"At this stage there is the possibility of some homes but we have to go onto those fire grounds and actually assess whether they were occupied and whether or not they were actually sheds," he said.