Residents of two towns in northern NSW have been ordered to evacuate with major flooding expected.

The State Emergency Service (SES) on Friday morning told residents of Boggabilla and Toomelah they must evacuate by 11am or risk being stranded without help.

“Once floodwater enters the area road access will be cut and all sewerage and power will be lost,” the evacuation order warns.

“If you remain in the area after 11am, you will be trapped and it may be too dangerous for SES to rescue you.”

An evacuation centre has been set up at Moree East Public School.

The Macintrye River has already reached moderate flood levels in Boggabilla, but is expected to peak with major flooding.

Major flooding is also occurring in Goondiwindi, with the river likely to exceed 2011 levels. 

Several other rivers across the state are also flooding, after the wettest November on record soaked catchments.

But sunny weather has returned for a spell, with multiple parts of NSW facing maximum temperatures exceeding 30C on Friday.

However, afternoon storms are forecast.

The SES has been delivering supplies to isolated communities including Wee Waa, Narrabri and Warren, where major flooding from the Macquarie River has occurred.

By Tiffanie Turnbull in Sydney

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