The Melbourne hailstorm does appear to be unprecedented for Victoria in delivering gorilla sized hailstones. Hailstones up to 10cm diameter were reported by a Bureau observer south east of the CBD. The damage to vehicle and roofs in some areas leaves no doubt there was massive hail. Most other suburbs along the storm track appear to be mainly golf ball size. The very heavy rain also caused widespread flash flooding.
The Early Warning Network provided hail warnings via SMS before this HP Supercell moved through the suburbs of Melbourne. Members of this service were able to reduce property losses and move their cars to shelter. Join now: http://www.ewn.com.au