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Brett Dutschke, 10 Nov 2015, 6:32 AM UTC

NSW making rainfall comeback

NSW making rainfall comeback
After a dry start to spring New South Wales is making a rainfall comeback with many areas now running above average for the past few weeks. Barely a third of the way through November, each New South Wales district has at least one location which has received more than 90 percent of its monthly average rainfall. Some centres, including Tocumwal and Brewarrina have more than doubled their monthly average in less than 10 days. Tocumwal is having its wettest November in six years and seventh wettest in the past 99 years with 85mm so far. The Riverina town is within 10mm of its seasonal average of 119mm. Brewarrina is already having its wettest November in five years and 10th wettest in the past 132 years with 90mm so far. The Upper Western town is nearly 30mm past its spring average of 85mm. Other locations which have already had a wetter-than-average season are Forster, on the Mid North Coast, and Warialda, on the North West Slopes. Warialda is also lucky enough to be one of the few places in the state to have exceeded its annual average, eclipsing the long-term-norm of 658mm by 60mm. Taralga, Hillston and Broken Hill have also achieved their annual average. The turn-around during the past few weeks has been due to a combination of increased instability, a fairly typical trend for this time of year, and warmer-than-normal seas which lends to higher humidity. We have seen a significant increase in frequency of rain-bearing systems cross the state with another one this week. Looking ahead, the signs are good in terms of further rainfall. A low pressure trough should hook up with moisture from the north and east to generate showers and storms again next week, at least in the north and on the ranges. This may help relatively dry places such as Gundagai and Uralla bridge their rainfall deficit which is more than 300mm and 200mm respectively for January-to-November.
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