A violent low pressure system is delivering destructive winds, heavy rainfall and huge seas along southern coasts of New South Wales. The system developed overnight from a trough that pushed through the southeast. Currently, several low pressure centres are spinning off the main system. Since the early hours of Sunday, destructive wind gusts beyond 130km/h have been recorded. Montague Island was blasted by 135km/h wind gusts at around 6am, the strongest in at least eight years. The effects of the low have been felt in Victoria too, with Mt Hotham hit by a gust of 120km/h, the highest in nine months. Rainfall has been heavy too, with showers infiltrating the Southern Tablelands. Totals this morning in just six or seven hours were: - Mt Darragh 85mm. - Eden 47mm. - Cooma 40mm. - Nimmitabel 79mm. Conditions offshore have deteriorated significantly, with maximum wave heights off Eden reaching between six and eleven metres. Towards Sydney, sunshine and light winds are bringing a pleasant day with little evidence of the maelstrom to the south. The weather will head north though, but Sydney may now miss the worst of it. Keep an eye on the latest warnings at weatherzone.com.au