Sydney is having its longest spring dry spell in 29 years after showers managed to evade the city's rain gauge this morning. A few thirsty gardens and lawns across the Sydney Basin were treated to a brief drink on Sunday night and Monday morning as a low pressure trough moved over eastern NSW. Unfortunately, not all suburbs managed to get wet. The city's Observatory Hill rain gauge registered 0mm of rainfall during the 24 hours to 9am today. The heaviest falls in the greater Sydney area occurred at Toongabbie (1.5mm), Sydney Airport (1.2mm) and Rose Bay (1mm). This morning's 0mm reading extends the city's run of rainless days to 25 in a row, which is Sydney's longest dry spell in 4 years and the longest to occur during spring since 1988. With only 0.2mm of rain recorded at Observatory Hill between the start of September and 9am today, Sydney is currently experiencing its driest start to spring on record. The city's rain gauge will have another chance to pick up some precipitation today, with showers and thunderstorms possible across the Sydney Basin this afternoon. Any storms that do develop today may become severe. Check the latest warning at: http://www.weatherzone.com.au/warnings.jsp