Harm from natural disasters can be controled with preparation. At home and office, preparations to prevent fires from occurring after disaster attacks, to avoid injuries by providing enough light while evacuating during night time, etc., could make a huge difference.
IoT beacons can be embedded in, for example, lighting fixtures to connect with emergency alert notifications. When alerts are sent to smartphones, lights can be automatically turned on. Likewise, heaters may be automatically turned off when alerts are sent.
With IoT technologies, the risk of secondary disasters can be reduced at very small cost. Just turning on the lights and shutting off the electronics that could cause fires before an earthquake wave hits, for instance, could save lives.