Australia weather live updates: more heavy rain forecast for NSW and Qld as SES issues flood warnings; Sydney downpours cause train delays and airport flight cancellations

Dozens of flights cancelled at Sydney airport and drivers told to avoid non-essential travel as inland low and coastal trough combine. This blog is now closed

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Helen Reid from the Bureau of Meteorology has just provided us with an update on the Sydney rain and said the city could very well receive a month's worth of rain in one day.

She pointed to the Observatory Hill gauge and said on average in April, there is around 126.5mm of rainfall during the month. Since 9am yesterday morning, there has been 106mm of rain.

We are expecting rainfall over Sydney to increase during today ... I would suggest that if we got more than the April average, that wouldn't be too beyond too far beyond this stretch of imagination.