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Snowstorm may bring 30 inches as anticipation builds in Mass.

Big snows, and big buildup, come with the territory

The nor'easter forecast to slam the state Friday is creating a perfect storm of expectations, fueled by increasingly dire weather reports and flurry of tweets relying on the reams of raw data available online. Based on different models used by the National Weather Service's Storm Prediction Center, there were 22 different forecasts of how much snow could be dropped on the region by Saturday, ranging from 3.44 inches to a little more than four feet. A look at the predictions is below, along with sizes of items for comparison.

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SOURCES: Ford, schon.com

David Filipov, Patrick Garvin/Globe Staff

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