1 November 2010 UTC See page two of the NSW Monthly Weather Review which states In the first two days of the month a monsoonal low pressure system over inland Queensland brought high rainfall to the northern regions of the state This moved south over the following days bringing strong falls in western regions before interacting with a low pressure trough on the 7th The resultant system brought very heavy rainfall to the southern half of the state between the 7th and 8th particularly in the Riverina region Synoptic summary The monsoonal low was the remnants of Olga and or 08U but would need to look at the synoptic charts and satellite images Vis IR and water vapour which could be a problem since I can t find an archive which goes back to late Feb to early March 10 56