A Severe Weather Warning for heavy to locally intense rainfall and an Initial Flood Watch remain current as widespread rain and storms occur across the region.
NSW SES Deputy Western Zone Commander Joshua Clark said intense rainfall had already been recorded near the South Australian border, with further heavy falls expected today and Wednesday.
"Prolonged rainfall means flash flooding remains a significant risk, particularly where heavy rain falls in a short period," Superintendent Clark said.
"We are asking communities to stay informed, remain prepared and be ready for changing conditions."
Rainfall totals of 50 to 90 millimetres are forecast within 24 hours, with isolated falls up to 130 millimetres possible. In some areas, much of this rain may fall within six hours, increasing the likelihood of rapid creek rises, overland flooding and dangerous driving conditions.
Heavy rainfall has already been recorded across parts of the far west, including intense rainfall near Winnathee where approximately 120 millimetres fell within six hours.
Flash flooding has already impacted sections of the Silver City Highway and surrounding transport routes, with further road closures and travel disruptions likely. Unsealed roads may quickly become impassable, increasing the risk of temporary isolation for rural and remote communities.
"With transport routes already affected, some communities may become isolated as conditions change. Travellers are advised to monitor local council pages for road closure information," Superintendent Clark said.
"We encourage people to plan ahead, stock essential supplies and avoid unnecessary travel."
NSW SES has deployed additional resources including a High Clearance Vehicle, aviation assets and specialist flood rescue operators to support flood rescues, community resupply and emergency assistance.
Residents in Tibooburra, Broken Hill, Wilcannia, White Cliffs, Wanaaring and Menindee are advised to stay indoors during severe weather and avoid unnecessary travel. A Minor Flood Warning remains current for the Paroo River, where rising river levels may restrict crossings.
"Flash flooding can occur quickly and without warning. Never drive, walk or ride through floodwater - if the road is flooded, stop, turn around and find another way," Superintendent Clark said.
Residents are encouraged to monitor warnings, review emergency plans and stay up to date via the Hazards Near Me app, local radio and the NSW SES website.
For emergency assistance during floods and storms call NSW SES on 132 500. In a life-threatening emergency, call Triple Zero (000).
