A weak coastal trough and cool air in the mid-levels have been combining over the past few days to deliver persistent and heavy rainfall to coastal areas the New South Wales Northern Rivers. Gusty southerly winds laden with moisture moved up the east coast, delivering healthy totals to a variety of locations, generally on and east of the ranges. As of 9am today, Cape Byron has picked up a hefty 146.8mm making it the wettest 48 hour period since October 2010. Although persistent, the rain was particularly heavy at times, with up to 13mm collecting in the bucket in 10 minutes yesterday afternoon. Overnight, the heavy downpours continued with more bouts of up to 4.6mm in 10 minutes. At times, these moist southerly winds gusted up to 63 km/h at Cape Byron lighthouse, while across the border Cape Moreton Lighthouse experienced an 87 km/h gust yesterday afternoon. Overnight, and into the early hours of this morning, winds tended more west/southwesterly allowing the rainfall to abate slightly. It looks as though the heaviest rain has passed for now, with only far northeastern parts of the state collecting 5-10mm today and tomorrow. However, another trough is looking to deepen throughout Monday and Tuesday, potentially bringing another wet pair of days.