Scientists look at both quantitative indices and drought indicators to obtain a broad perspective of moisture deficiency over a region.
According to the April 16 U.S. Drought Monitor, moderate to exceptional drought covers 47.8% of the contiguous U.S.
The globally averaged temperature for March 2013 tied with 2006 as the 10th warmest March since record keeping began in 1880.
Most of the Nation experienced a radically different March 2013 than they experienced in March 2012.
NCDC’s U.S. Climate Reference Network data are aiding in a citizen-science project to predict the 17-year cicadas’ emergence.
The average temperature for the contiguous U.S. during March was 40.8°F, 0.9°F below the twentieth-century average.
According to the April 9 U.S. Drought Monitor, moderate to exceptional drought covers 50.8% of the contiguous U.S.