Shoalhaven and South Coast on weather alert

The region is part of a current flood watch area, with concerns over the Shoalhaven River and St Georges Basin.

Authorities are also closely monitoring the Clyde River, west of Ulladulla, which could have a major impact on the Batemans Bay area.

There is the chance of isolated heavier falls on the Far South Coast, with areas like Bega and Eden possibly receiving up to 250mm of rain.

As the low, which has produced more than 150mm to the west at places like Moree, moves east the Shoalhaven is likely to be impacted by strong northerly winds, which may develop into gale force.

Winds averaging 60 to 70 km/h with peak gusts in excess of 90 km/h are possible along the coastal fringe.

The damaging winds may still remain along the South Coast overnight due to the low pressure system..

Those winds are expected to come from the west on Wednesday.

There will be hazardous surf conditions with waves up to five and seven metres, which will pose a risk of coastal erosion.

In the current weather conditions there is also the risk of landslides.

And while rain is expected to ease on Wednesday, with a sunny day forecast and a top of 27 degrees in Nowra, that will be dependent on what the low does, whether it stays close to the coast.

The Shoalhaven SES efforts are being conducted from Ulladulla, with an incident management team overseeing the event and response to emergencies.

Division Commander Tracy Provest said up to 11.30am on Tuesday local SES crews had responded to 107 calls for assistance across the Shoalhaven.

"Jobs were wide spread across the region and for a variety of incidents from diverting flood waters away from properties, to fixing and securing leaky roofs," she said.

"We've also had a few trees down.

"Most of our jobs Tuesday morning were roof related. And while Nowra and Ulladulla seemed to be the locations of the most Tuesday jobs, in the 24 hours previous, St Georges Basin also recorded a number of jobs."

At the time of talking 12 jobs remained outstanding.

"We are monitoring the Shoalhaven River and St Georges Basin and will be keeping an eye on Sussex Inlet, especially if we receive the 100-150mm as predicted," she said.

She said sandbagging caches had been established at a number of locations for residents to utilise - including at the community centre at Shoalhaven Heads, Nowra SES unit, Sanctuary Point SES, at Sussex Inlet (Thomson Street), Ulladulla SES headquarters, Lake Conjola, Lake Tabourie and Bawley Point.

The SES advises that people to move vehicles under cover or away from trees; secure or put away loose items around your house, yard and balcony; keep at least eight metres away from fallen power lines or objects that may be energised, such as fences and trees that have been damaged by fire are likely to be more unstable and more likely to fall.

You can report fallen power lines to either Ausgrid (131 388), Endeavour Energy (131 003), Essential Energy (132 080) or Evoenergy (131 093) as shown on your power bill.

Don't drive, ride or walk through flood water; keep clear of creeks and storm drains.

If you are trapped by flash flooding, seek refuge in the highest available place and ring Triple 0 if you need rescue.

Be aware that run-off from rainfall in fire affected areas may behave differently and be more rapid. It may also contain debris such as ash, soil, trees and rocks.

After bushfires, heavy rain and the loss of foliage can make the ground soft and heavy, leading to a greater chance of landslides.

Stay vigilant and monitor conditions. Note that the landscape may have changed following bushfires.

For emergency help in floods and storms, ring your local SES Unit on 132 500.