Another good option is using the power of Twitter.
There is a website called
http://incidentalert.com.au/ that will email or SMS any incidents that happen in a town(s), region(s) or anywhere in the state. This service does have a cost to use, but covers SA & Vic.
The other option is use the power of Twitter. The website above also updates incidents onto Twitter, with a different Twitter account for each region & state. You can then have Twitter SMS this message to your mobile for free if you are with Telstra. I find this works really well for finding out whats happening around the area and for what could be heading our way.
Check out
http://twitter.com/IncidentAlertS1 for the Region 1 incidents.