Devastating flash floods have killed 37 people and hundreds are still missing in eastern Kentucky’s worst disaster for decades. The death toll will continue to rise. Hundreds of homes and businesses have been destroyed. People are sitting on their porches, hoping somebody is coming to save them. See  In July, Sydney in Australia was hit with a month’s worth of rain in five days; people are still cleaning up three feet of swirling mud. Pakistan has 7,000+ glaciers, but rising global temperatures are causing them to melt rapidly, creating thousands of glacial lakes that might burst and release millions of cubic metres of water and debris, flooding villages in just a few hours. Worsening Indian monsoons cause Mumbai residents to commute on Venetian gondolas and inflatable dinghies. This year residents are being asked to tweet details about floods in their neighbourhoods. The data is then used to issue immediate geographically-specific flood alerts.