🚨 Public Safety & Emergency · Data Flow
Disaster Early Warning Alerts
How warnings for cyclones, floods and earthquakes reach people: sensor and forecast data, a decision by the authority, and cell broadcast, SMS and sirens to the affected area.
Drawing diagram…
What this diagram shows
- Alerts target only the affected districts
- Cell broadcast reaches every phone in the area, even without a SIM contact list
- Every alert is logged for later review
Prompt used
Early warning data flow: weather forecasts, river level sensors and seismic networks feed a hazard analysis system. It proposes an alert with affected districts; the disaster management authority approves it. The alert gateway sends cell broadcast messages through mobile operators, SMS to registered citizens, TV and radio messages, and triggers sirens in coastal villages. All alerts are logged.
Mermaid code
flowchart LR WX[(Weather Forecasts)] -->|Cyclone track| HZ[Hazard Analysis] RV[River Level Sensors] -->|Water levels| HZ SE[Seismic Network] -->|Quake data| HZ HZ -->|Proposed alert and districts| AUTH[Disaster Authority Approval] AUTH -->|Approved alert| GW[Alert Gateway] GW -->|Cell broadcast| MNO[Mobile Operators] GW -->|SMS| REG[(Registered Citizens)] GW -->|Bulletins| TV[TV and Radio] GW -->|Trigger| SIR[Coastal Sirens] GW -->|Alert record| LOG[(Alert Log)]
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