But Southern Tablelands RFS resources have been bolstered by a Northern Beaches strike team working out of Yass Fire Control Centre.

RFS Southern Tablelands operations officer Lachlan Gilchrist said the team comprised an extra 50 personnel and 11 vehicles.

All local brigades are also on standby.

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Meantime, Mr Gilchrist said weekend fire behaviour modelling was based on "worst case scenario" but the past 24 hours on the south coast reinforced that it could eventuate in the Southern Tablelands.

Wind are predominantly blowing from the northwest. Goulburn airport registered gusts of between 56 and 67km/h between 9.30am and 11am, according to the Bureau of Meteorology.

"Across the area, there's a forecast of very hot, gusty winds averaging between 60 and 70km/h in the day, which is expected to turn southeast on the south coast by 7pm and hit this area at 10pm," he said.

This would push the Currowan fire, now standing at 264,665 hectares, towards Windellama, Bungonia, Tallong and Marulan.

Mr Gilchrist said all the messages about leaving early if people were not prepared, still applied. This was reinforced at community meetings last weekend.

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Some people have already evacuated. An evacuation centre is open at Goulburn's Veolia Arena on Braidwood Road. The adjoining Recreation Centre is also an evacuation point for large animals.

But for now, Currowan was sitting where the RFS wanted it to be, Mr Gilchrist said.

In the same area, the Oallen Ford fire near Bungonia which broke out last Saturday, has now been renamed the Jacqua Creek fire to reflect its point of ignition. It has burnt through 988ha.

Mr Gilchrist said crews had undertaken a great deal of containment work over the past few days. However he anticipated a finger of the blaze would "take a run" on Saturday afternoon and join up with the Currowan fire.

"It is very concerning," he said.

Elsewhere, the Caoura Road fire at Tallong remains at 2ha. It is mainly burning in the Bungonia Gorge, having spotted over the Shoalhaven River on Tuesday night. Crews have tackled spot fires along Caoura Road during the week. Aerial water bombing took place on Friday.

"We got good containment on this on Friday and it is being controlled. Crews have done an amazing job to keep it where it is...We are not expecting it to push up (towards Tallong) under the current conditions but things can change quickly," Mr Gilchrist said.

"We have multiple areas of concern and it could become part of Currowan."

Elsewhere, some 126 Taralga residents attended a briefing on the potential Green Wattle Creek fire threat in the town on Friday night. It is burning generally in the Lake Burragorang area but also northwest of Wombeyan Caves.

Mr Gilchrist said today's northwest winds could push it towards the Bannaby Road.

The fire has crossed the Wombeyan Caves Road to the west of the Wollondilly River junction, in the Tallygang Mountain Road area and stands at 264,665ha. It is currently at advice level.

Overnight containment work has focused on the Tallagang area and at 10.30am, Mr Gilchrist said this was holding but crews would likely be pulled out today due to dangerous conditions.

The main message to residents at the meeting was to enact bushfire plans and leave early if not prepared. Those people north and west of Mittagong, including Rock Lilly, Barralier, and Wombeyan Caves Road were advised to leave before sunrise on Saturday.

"Everyone is very well aware of what's going on and the potential threat under forecast conditions," Mr Gilchrist said.

"There was a mix of initial concern but we wanted to empower people to make the right decision. I think they left with a clearer idea.

"Our communities are a bit battered and weary of fire and that's a concern but at least people have the information to make decisions."