Severe weather warning issued for parts of Riverina as up to 70mm predicted in intense rain

A severe weather warning for heavy rainfall was issued by the Bureau of Meteorology [BoM] on Tuesday, ahead of the predicted arrival of intense rain and potential flash flooding on Wednesday.

Junee, Cootamundra, West Wyalong, and Young are among the communities likely to be hit hardest, the bureau said.

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"Heavy rainfall which may lead to flash flooding is forecast for parts of the southern and central west slopes and plains from Wednesday morning and continuing into the afternoon," the warning issued just after 1pm said.

"Six-hourly rainfall totals between 60mm to 70mm are possible."

An upper low was on Tuesday combining with a surface cold front and moving east across South Australia into western NSW, the BoM said.

It will exacerbate predicted rain in central NSW, with Parkes and Condobolin also expected to be hit with the heavy falls.

There is a chance of severe thunderstorms in the north and west of the Riverina forecast zone on Wednesday, according to the BoM.

Wagga should expect up to 20mm of rain, while Griffith and West Wyalong are likely receive up to 30mm, and Temora 25mm.

"Widespread rain and thunderstorms are forecast with the low, before a new high restores generally settled weather at the end of the week," the BoM said.

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