Not much, but it may be time to recalibrate?
The rainfall today 27/2/12 appears to vary widely according to the five other stations nearby! My backyard gauge is nearly overflowing the inner gauge- 26mm-and the weather station collected 33mm! But the others range from 22mm 5km & 6.5km, 15mm 7km away and 33km away. (copied to the Weather Underground site).
Watching the rain come and go was fun too.
Local range then the 500km range, maybe more for us tonight. Some statistics.
Following the rainfall IMBY since 1998, I see that the average February rainfall increased over the average for the area compared to info from the BOM