Significant rainfall, some record breaking totals and flooding have occurred overnight in pockets around northern and eastern NSW.

More picking up 140mm overnight is one of those locations who saw flash flooding, with rain continuing to fall there.

Areas of rain, locally heavy with some thunder moving south and east through NSW today, gradually clearing from Central areas this afternoon and the slopes this evening. Moderate to heavy rainfall along the band will clear eastwards and into the SE this afternoon and evening and drier air will move into the western parts of NSW and QLD this evening.

Rainfall will be heaviest through the eastern half of QLD, NSW and VIC today with that focus as I said moving east through the day.

A low has developed near Condobolin and is deepening and that system will bring a burst of heavy rainfall along it's track and into SE NSW this evening, before moving offshore overnight. That should be through the ACT by 3pm and then towards the South Coast by this evening and deepening as it approaches.

Gale force winds and intense rainfall possible with the system as it moves offshore the South Coast and/or Gippsland.

A significant risk of flash flooding is forecast for the southeast of NSW and far East Gippsland. Rainfall rates could reach 30-40mm/hr on saturated catchments. This will add to riverine flooding.

Rainfall totals of 100-200mm expected for the SE tip of the nation with the rainfall gradient quite tight as you work your way inland. This additional rainfall will bring flooding to parts of the SE of NSW and E VIC.

Flood Warnings are in force for river systems across NSW including the SE

Showers and some heavy falls are possible on the backside of the system overnight tonight and into Wednesday through Central VIC, including Melbourne, with a southwest flow. They should ease during tomorrow.

Falls of 50mm possible in the Upper Yarra and the Strezlecki Ranges north of Foster.

A drier airmass will move into the region on Wednesday with much calmer conditions expected throughout.

Relative Humidity Monday shows the copious amounts of moisture across the country leading to that tremendous rainfall and flood event.

By Wednesday a drier airmass is working it's way through Australia with a stable southwest flow developing on the top side of a low pressure system moving southeast away from NSW.

By Thursday a much more stable and dry airmass has enveloped the nation.

A drier end to the working week is expected ahead of another pressure trough through SA and WA which will bring the next chance of rainfall through central parts of Australia.

More on that system through the next few days.

But it is a hot period for WA again with high pressure moving south of the nation with above average temperatures expected with little rainfall for the SWLD. We may see an increase in rainfall coming into mid April. The east will remain cooler than normal over the coming week but temperatures will start to warm up as higher air pressure redevelops and skies clear.

For those over QLD and the NT, things remaining fairly calm with only the tropics seeing the continual showers and thunderstorms - rainfall remaining patchy but heavy. Temperatures will remain near seasonal.

Scattered showers and thunderstorms over Central Queensland will ease and contract back to the tropics.. Isolated showers tending scattered over the east coast, with moderate falls over the parts the Tropical coast.

More weather to come later

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