area dependent. There was lightning over a large part of GP this weekend, at various times.
Lightning will lick that equipment and fry it if in the wrong place.
People also make the mistake of thinking that all damage occur on the turn off of the power.
In fact there is limited to no chance of damage when the power goes off. It damages equipment on the return surge of the electricity. That initial surge is more dirty than our electricity generally running.
For a better image... When water is turned off and later on again. You then want coffee and stick the kettle in under the tap to top it up. As the water initially explodes out the tap it knocks the kettle out off your had. The water stablizes after a bit.
The same happens with electricity.
IE even if you do not unplug all wall switches must be off, where possible, as it assists in keeping equipment and appliances safe.