As rolling thunderstorms cross north east and inland NSW, Premier Dominic Perrottet says more federal funding for flood-impacted communities may be on the way.
His message comes as regional communities try to salvage what's left after weeks of devastating rain.
Flood recovery crosses party lines, and the NSW and federal governments have been working collaboratively to get assistance out the door, Mr Perrottet said.
"It's above politics," the premier told reporters in Albury on Thursday as he stood by Victorian Premier Daniel Andrews.
Talks between the NSW and Commonwealth governments have been ongoing since catastrophic flooding hit the Northern Rivers earlier this year.
"Those communities have been absolutely devastated, broken, and it's a long journey ahead," Mr Perrottet said.
Flooding has recently hit a number of inland communities, including Deniliquin, Moama and Moree, where the premier visited this week.
Mr Perrottet said he spoke with Prime Minister Anthony Albanese on Thursday ahead of a Friday announcement when the pair are due to meet.
A number of major roads and highways are closed across NSW because of flooding, straining farmers already facing crop losses.
"Some of our farmers were going to be facing a bumper harvest this year, and that's been taken away," Deputy Premier Paul Toole said on Wednesday.
"We probably won't know the full extent of it until the waters do recede, to actually see whether or not farmers can get on to their paddocks."
Severe thunderstorm warnings are active in the Northern Rivers, the Mid North Coast, the Hunter region and inland in the North West Slopes and Plains and in the Northern Tablelands on Thursday evening.
In the Northern Rivers, storm cells will likely bring heavy rainfall leading to flash flooding, large hailstones and dangerous winds through the night.
Towns that may be affected include Murwillumbah, Numinbah, Tyalgum, Kyogle, Wiangaree and Nimbin.
Severe thunderstorms are also expected on the Mid North Coast, the North West Slopes and Plains, and the Northern Tablelands, with damaging winds and hail expected.
The severe weather is the result of a trough which is generating storm cells.
Graziers are also warned of a risk of lamb and sheep loss as temperatures plunge, and showers and winds affect the Central Tablelands, Southern Tablelands, South West Slopes, Snowy Mountains and ACT on Friday.
Next week, a new system is expected to develop, bringing rain, widespread showers and storms from Sunday, continuing on Monday and Tuesday.
Some 18 flood warnings remain in place across NSW, including seven for major flooding at the Namoi, Macquarie, Bogan, Lachlan, Murrumbidgee, Edward, Murray, Barwon and Darling rivers.
The State Emergency Service has issued 74 emergency warnings, and 19 "evacuate now" warnings remain in place.
