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Situation Report - Alaska Flooding, August 7, 2009

The winter in northeast Alaska was exceptionally cold. Colder than normal weather caused a 140 percent higher than usual ice formation on the Yukon and Kuksokwim Rivers. The winter was followed by an amazingly warm thaw. As a result, breakup (when the ice breaks apart and flows down the river) happened much more quickly and dramatically than usual.

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