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January-February 2015

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Forecast Center

As we move into the winter months, the Arctic powerhouse of cold air begins to dominate weather patterns across North America. This means that the contrasts between warm and cold air are on the increase, and these are exactly what baroclinic weather systems need in order to develop. For this issue we'll look at such an event across central and western United States. And as a bonus, we have two fronts to analyze: one associated with a frigid Canadian air mass and another with a cold Pacific air mass.

TIM VASQUEZ is a former Air Force forecaster and author of Digital Atmosphere, a weather forecasting software program. He lives near Norman, Oklahoma, where he keeps busy as a weather consultant and software developer.

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