U.S. natural disasters pose risks in various aspects, even some of them trigger other disasters. The US is potentially hit by natural disasters because located in the Pacific Ring of Fire.

The emergency notification system is a new method to spread awareness about threats which provides information in disaster management. Read more in the overview here.

Emergency warning systems are extremely useful in supporting risk mitigation. Specifically, in Europe, a comprehensive European emergency alert system has been established

Does the UK still have warning sirens? Yes, the country still has those sirens. The UK chooses this communication channel for its EAS because the device offers some benefits.