The Brewarrina Doppler weather radar has been switched on.
Images from the radar are on the Bureau of Meteorology (B0M) website and BoM Weather app, showing an area including Bourke to the west, Nyngan to the south and Walgett to the east.
"With such a busy harvest season across much of the Parkes electorate this year, I know real-time weather data in this region will be a godsend for farmers looking to make informed decisions for maximum productivity," Member for Parkes Mark Coulton said.
The new radar is part of the BoM's national network of more than 60 weather radars.
It is the first of three new radars for western NSW costing the federal government $24.4 million.
The other two will be built in the Parkes and Hillston-Ivanhoe regions.
Mr Coulton said the government had "prioritised" the commissioning of the radar, the first in Western NSW.