A topside surprise for this should be AUD supportive. The housing sector (construction and related) of the economy has felt a negative impact from the fall in home prices. If confidence returns to the sector it'll be a positive for the economy. I suspect a downside surprise will not impact as much as recent indicators (after May) have given small glimmers of recovery:
Another tool you can use is our significative line crossing systems, including crossing averages, MACD cross and over zero signal. Such as the indicators that detect patterns in Japanese Candlesticks (see above), the correct selection of your parameters are vital to avoid to be guided in your decisions by misleading signals. How to add crosses indicators