While every region of the country has seen a rise in winter temperatures since 1970, precipitation trends paint a more varied picture.
Since 1970, winters in the continental U.S. have warmed by 0.61°F per decade on average.
Volatile precipitation patterns, with heavy rains followed by drought, can lead to ideal conditions for wildfires in some states.
With drought, increasing water consumption, and climate change, the Colorado River Basin Ã¢Â€Â” lifeblood of the Southwest Ã¢Â€Â” appears headed for a day of reckoning.
Glen MacDonald, of UCLA, talks about the threat of drought in the Southwest and what it means for water supply.