Among the soggiest suburbs of Melbourne by Tuesday morning were Frankston (29mm), Rowville (26mm) and Moorabbin (24mm).
Tom Delamotte, a duty forecaster at the Bureau of Meteorology, said rain had been persistent all night in Melbourne. Some particularly heavy patches moved through in waves across the city.
He said while rains had eased in the metropolitan area by sunrise the worst of the rain, and possible thunderstorms were yet to come today.
“We do expect just a few showers through much of the morning into the early part of the afternoon. There could be a thunderstorm or two around as well,” he said.
“And then as we move later into the afternoon we’re likely to see a period of fairly persistent rain across the Melbourne area as the winds turn around into a south-westerly direction.”
Melbourne, Geelong, Ballarat, Maryborough, Bacchus Marsh and Warnambool are all expected to be the most affected by the severe weather warning on Tuesday – and most suburban areas are expected to see another 15mm to 25mm fall by the end of the day.
“There could be some localised areas that get 35 mm more today,” Mr Delamotte said.
Melbourne is heading for a top of 18 degrees on Tuesday on what is expected to be the wettest day this week in the lead up to Christmas Day on Friday, which is heading for a dry top of 21.
“We do continue to see a shower or two on Wednesday and Thursday as we continue to see some winds bring some cloud in off the ocean and bring us a shower or two,” said Mr Delamotte.
“But it does look like it clears up for Christmas Day and then after that our next chance for some rain is on Sunday as a front moves in.”
Boxing Day will be “quite pleasant” according to Mr Delamotte, with no rain and a forecast top of 28 degrees.
Melbourne is experiencing a wetter than average year, with 776mm falling in the city so far year – far above the average of 518mm, according to the BOM.
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Rachael Dexter is a breaking news reporter at The Age.