Rain and severe thunderstorms will spread across a large swathe of northern, eastern and southeastern Australia during the second half of this week, likely continuing into next week as well.

Two separate low pressure troughs will produce wet and stormy weather in parts of eastern, central and southern Australia on Wednesday and Thursday. While some of these storms could become severe, this will be an entrée for what lies ahead.

On Friday, rain and storms will become far more widespread as a trough and low pressure system deepen over Australia. Storms will affect parts of the NT, Queensland, NSW, Victoria and SA by Friday afternoon, with severe thunderstorms possible in each state and territory.

As the deep trough and low move further east on the weekend, rain and storms will extend from northern Queensland down to Victoria on Saturday and continue over parts of NSW, Queensland and possibly Victoria on Sunday. Both days will feature severe thunderstorms and rain may be heavy enough to cause flash flooding in some areas, both with, and independent of, these severe storms.

Image: Forecast rainfall during each of the next six days (starting this Wednesday), according to the ECMWF model.

Looking further ahead, there's a good chance that dangerous rain and thunderstorms will continue to affect parts of eastern and southeastern Australia into the beginning of next week as well. Some models even suggest that a new trough will reignite thunderstorm activity over northern and central Australia early next week.

The coming week's dynamic weather pattern will produce severe weather in multiple states on multiple days. Heavy rain, damaging to destructive winds and large hail and all possible, so make sure you keep up to date with the latest warnings and forecasts for your area.