Queensland is prone to severe storms and as we are constantly warned, you must be prepared for them. One of the things that every household should own is a large tarpaulin, in case your roof gets damaged by wind or hail.
If your skylight breaks, or your roof becomes damaged in some way during a storm, don't climb up to repair it unless you are physically capable and also have a head for heights. Instead, call the SES for help.
Wet roofs are particularly slippery and so even if you are used to walking on a roof, extra care must be taken. Wear non-slip shoes and remember to walk along the lines of screw heads so that you don't cause more damage to the roofing material.
Water must be able to flow over tarpaulins, or else they won't keep your house dry out. Fix the tarpaulins to the good side of the roof, perhaps with sandbags or tie one side of the tarpaulin to something on the ground so that it won't fly away. Then lay it over the ridge-capping and over the hole.
If the wind is strong enough, even very strong trees can blow over, but check your existing trees for cracks in trunks or branches. When choosing new trees for your garden, remember that some trees are more shallow-rooted than others, which makes them more likely to topple over. This is especially true it they are watered a lot, so its a good idea to stay away from these, or to keep them short - more of orchard height, rather than letting them become massively tall.
Secure TV aerials, weather vanes, awning attachments and anything else that you might have on your roof so they don't become missiles and fly into your neighbours' property.
And last but by no means least, keep your gutters, downpipes and stormwater pipes clear so that rain water landing on your roof has the best chance of getting off it. It's a good idea to make sure that there aren't any leaves or branches in the gutters both before and after a storm.