Heavy showers have inundated parts of the New South Wales coast yesterday and into today. Several heavy showers have brought a two-day total of nearly 110mm for Jervis Bay, where 23mm of this fell in just 10 minutes yesterday morning. A severe storm also ripped through Williamtown yesterday, bringing 21mm in 10 minutes and a grand total of 109.4mm to 9am today. Other places that were doused by these heavy falls includes Central Tilba with 118mm and Narooma with 66mm. An offshore trough is the culprit for these heavy pockets of rain. Thunderstorms are currently forming offshore and slowly migrating towards the coast under weak steering. However, they are observed to be dissipating to lighter showers just before they make landfall. A few keen observers may even see a water spout or two off the NSW coast. Nevertheless, this afternoon storms become a risk in the eastern inland due to another trough, supported by an upper cold pool. This risk area stretches from central parts of the Sydney Basin to the Central Tablelands, and up to the Northwest Slopes and Plains. The heaviest (potentially the most severe) storms look to occur around the Hunter and Mid North Coast. Make sure to keep up-to-date with any warnings issued, found here: http://www.weatherzone.com.au/warnings.jsp?lt=wzstate&lc=nsw