A near-stationary low pressure trough over central NSW has been triggering showers and  thunderstorms along its eastern flank, and will continue to do so on Monday and Tuesday.

The trough, firmly positioned over central NSW, will continue to trigger showers and thunderstorms over the coming days. Most of the storm action has been along the eastern flank of the trough, fueled by moisture from the Tasman Sea. With no strong jetstream to bump it away from where it is, showers and thunderstorms are likely to keep forming well into this coming week.

The trough does, however, look to deepen on Tuesday as it gets some assistance from an upper-level low over Victoria. Although severe thunderstorms are a chance on Monday in parts of NSW, they will likely be more widespread on Tuesday. Heavy rain and damaging wind gusts are the greatest risk in the storms, however large hail will also be a risk for some areas.

Thunderstorms have avoided Sydney City over the last few days, and should continue to do so on Monday. Western suburbs may see a few storms on Monday, but Tuesday is the likeliest day for storms to reach the CBD.

The trough should contract to the northeast of the state on Wednesday, bringing relief from the storms. It will be a brief respite, however, as on Thursday the trough looks to dip south again.

Keep up to date with all NSW thunderstorm warnings at https://www.weatherzone.com.au/warnings.jsp?lt=wzstate&lc=nsw