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.
In addition to its primary mission of observing space weather, the Deep Space Climate Observatory (DSCOVR) satellite is carrying two instruments that are important to climate science: the NISTAR radiometer and the EPIC camera.
September 2012 tied with September 2005 as the warmest September worldwide since record keeping began in 1880. See which countries saw warmer-than-average temperatures during last month, and learn how weak El Niño conditions might progress into the Northern Hemisphere winter.