I realise this should be in the off topic session, but think more people will see it here.

The weather Bureau has issued a severe thunderstorm warning, with chances of LARGE hail in Perth Metro and surrounding areas.

http://www.bom.gov.au/cgi-bin/wrap_fwo.pl?IDW28201.txt

http://www.bom.gov.au/products/IDR702.loop.shtml#skip

Might be an idea to hide the cars to avoid more golf balls driving around...