End of the Drought?

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The worst of the drought may be over for Colorado and the Southwest.

That's according to scientists with the National Oceanic and Atmospheric Administration in Boulder.

NOAA unveiled new research Wednesday showing that the region typically gets significant moisture when an El Nino occurs.

El Nino is the warming of the tropical Pacific Ocean that affects weather patterns around the world. That weather phenomenon started in late July. But scientists caution that one good winter won't end the drought.

Scientists are also unsure of the long-term impact of rising ocean temperatures. They say higher temperatures in the western Pacific Ocean helped trigger drought stretching from the United States to Central Asia this year.

Research shows the phenomenon doesn't follow normal patterns and may be linked to increasing amounts of greenhouse gasses.