Posted: Thursday, January 10, 2013 12:00 am
Last year was the lower 48 states' second most extreme year of weather in more than 100 years, according to the National Climatic Data Center.
The center is the nation's library of weather records, and scientists there created the Climate Extremes Index to objectively track the relative usualness of each year's weather.
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Thursday, January 10, 2013 12:00 am.