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Landslide and mudflow warning systems produce a warning when there is danger of a landslide or mudflow event in an area, improving disaster preparedness and minimizing event risks. These events often result in heavy material damage with high clean-up costs, and are threats to human safety. The systems receive either real-time or periodic monitoring data from rain gauges and slope-movement sensors on site. The data is coupled with data from mathematic models calibrated with local topography, geo-physical characteristics, land use and forecasted meteorological data to determine the risk of a landslide or a mudflow. If there is a substantial risk, a warning is issued among system managers and local decision makers. Today landslides and mudflows are increasingly likely due to unpredictable weather patterns resulting from climate change. This technology is therefore important for climate change adaptation efforts in regions at risk.