Heavy rain and storm activity has been affecting different parts of Sydney for the last few hours. The Northern Beaches and suburbs further north on the Central Coast have seen strong falls with well over 50mm in only a couple of hours.
Sydney Airport and surrounds have also received big falls. From 10pm to midnight 58.2mm fell. If we look at long term averages for November at Sydney Airport, we can see that the average monthly rainfall is only 81.2mm. So more than 70% of the average monthly rainfall fell in just 2 hours!
Currently the rainfall total in the 4 hours from 9:45pm to 1:45am stands at 75.0mm with rain still falling. These falls have been rather isolated though as Observatory Hill, not more than 10km to the north, has received a much lower total of 21.2mm since 3pm. On the other hand, from the Rainfall since 9am view of the Sydney rain radar on the BoM site, it looks like Sylvania and surrounding suburbs in Sydney's south have received over 80mm.
Most of the rain is now off the coast of Sydney and is moving out to sea. The forecast for Saturday predicts further falls though with the chance of storms.
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