1. In March 2011, a major earthquake and tsunami struck Japan, causing widespread damage and loss of life.
2. OpenStreetMap mappers began contributing data to map the affected areas around Sendai Airport. Satellite photos and aerial imagery were also provided to mapers.
3. An Ushahidi site called Sinsai.info was set up to crowdsource crisis information. It received over 12,000 reports in the first month and had high traffic volumes.
4. Outreach was conducted to the media to raise awareness of OpenStreetMap's and Sinsai.info's crisis mapping efforts. Plans were discussed to expand mapping activities and prepare for future disasters.