In 2015, the frequencies of extremely warm days and nights were the highest ever recorded in western North America, parts of central Europe, and central Asia. The year broke the record for the highest number of extremely warm days in the 66-year record (1.8 times more than the average).
Currently, the risk of regional-scale tornado outbreaks is predictable only about 7 days in advance. But NOAA scientists report that sea surface temperatures in the tropical Pacific may provide a month or more of advance warning of an elevated risk for tornado outbreaks.
With this year's ongoing El Niño event, parts of East Africa may be ripe for a potential outbreak of Rift Valley Fever. See how government agencies are using climate data to help predict, and hopefully prevent, an outbreak of this deadly mosquito-borne virus that affects both people and valuable livestock.