Passing the fight between human and nature successfully when natural disaster strikes (zones with high World Risk Index) is mostly the matter of common preparedness to cope with short term - immediate impacts. First of all it is life loss minimalization (earthquake: Haiti – 2010), then health damage minimalization (floods: Central Europe – 2013) and last not the least damages to strategic infrastructure (tsunami: Fukushima – 2011). Long term effects such as economic or social impacts on affected community are result of the zones condition before the disaster and these are in many cases subject of international help even before stroke by disaster. Open data, their collection (appropriate capturing tool), afterwards understanding data (build model and scenarios) and then communicating all this to relevant recipients (rescue forces, army, public) helps to minimalize short term effects of natural disasters (searching for missing persons) but also it helps in long term recovery of impacted area (help of Google in New Orleans after hurricane Katrina – 2005). This way it is possible to effectively manage recovery after natural disaster(volunteers, shelters, distribution of medical care, emergency cloud for community ).