Use Satellite Data to Build a Flood Early Warning System for Nigerian Communities

Nigeria experiences catastrophic flooding annually — in Kogi, Anambra, Lagos, Benue, and dozens of other locations. Satellite data capable of predicting flood risk — rainfall data, soil saturation, river level monitoring — is freely available from NASA, ESA, and other agencies. It is almost never used to warn the communities at risk. Your challenge is to build a system that uses freely available satellite and remote sensing data to provide 48 to 72 hour flood warnings to at-risk communities in at least one Nigerian state. The warning must reach community members without smartphones, be delivered in local languages, and be actionable (tell people what to do, not just that a flood is coming). Submit a working system or detailed technical specification covering: data sources, processing methodology, warning threshold logic, delivery mechanism to community members, accuracy validation approach, and a test run on historical flood data. Judging criteria: 40% technical soundness and accuracy, 30% community accessibility, 20% actionability of warnings, 10% use of freely available data.