Earthquakes, floods and landslides are natural calamities that tend to destroy communication facilities such as cell towers and internet facilities. Under these circumstances, the victims cannot communicate with the rescue teams, which slow down the emergency response, putting more human lives at risk. In this paper, a self-healing wireless sensor network based on disaster communication is discussed using ESP32 microcontrollers and the HC-12 wireless communication modules. The proposed system will include sensor nodes, relay nodes, and one gateway node that will communicate through multi-hop wireless communication. Sensor nodes identify abnormal vibrations or manual SOS alerts and send emergency messages by way of neighbouring nodes to the gateway node. Real-time monitoring is available on the gateway node in the form of a web dashboard that can be accessed by rescue teams. The suggested system works without the internet connection and offers a stable and at the same time economical way of communication that effectively works in disaster-prone regions.