http://www.bom.gov.au/products/IDQ60801/IDQ60801.94299.shtml That makes it a Cat 3 http://www.bom.gov.au/products/IDQ60801/IDQ60801.94299.shtml http://www.bom.gov.au/products/IDQ60801/IDQ60801.94299.shtml http://www.bom.gov.au/products/IDQ60801/IDQ60801.94299.shtml http://www.bom.gov.au/products/IDQ60801/IDQ60801.94299.shtml Bom Willis Island Obs