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posted: 2/11/2013 6:17 PM

The whopper of a storm didn't rank high

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  • Bert Johnson takes a break while clearing snow from a bus stop bench outside the apartment complex where he lives in Portland, Maine, Sunday.

      Bert Johnson takes a break while clearing snow from a bus stop bench outside the apartment complex where he lives in Portland, Maine, Sunday.
    ASSOCIATED PRESS

 
Associated Press

WASHINGTON -- The snowstorm that walloped the Northeast with about 3 feet in some places didn't add up to being that bad, federal statistics say.

Two National Oceanic and Atmospheric Administration storm-rating measurements initially ranked Friday's snowstorm as 16th in Northeast history by one scale and 25th by another.

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The two storm measurement systems are similar in scale to the ones that measure hurricanes and tornadoes. They rank the weekend storm as a 3 and "major" on a 1 to 5 scale. It didn't rate a "crippling" 4 or "extreme" 5.

"I was a bit surprised; I thought it would have been a 4 or a 5," said National Climatic Data Center meteorologist Mike Squires. "The footprint of really heavy snow over populated areas was relatively small compared to other storms we have looked at."

Meteorologists look at the really big snow -- measuring more than 30 inches -- and only 192 square miles populated by 49,000 people got that much. To be crippling or extreme, those numbers have to be much higher, Squires said. Only eight weather stations out of 1,365 had 30 inches of snow, he said.

The snowstorm measuring systems take into account the size of the snowstorm, the amount of snow and how many people were in its path. But they do not take into account high winds -- some in this storm reached hurricane force -- or drifting snow.

On the older and more nationally oriented Northeast Snow Impact Scale, which looks at snow in the entire history of a storm, the weekend storm's total score was 4.35, ranking it 25th. That's far behind the No. 1 1993 Storm of the Century and the more famous 1978 blizzard that ranked 13th.

In the newer and more area-specific Regional Snowfall Index, this recent storm came in behind the No. 1 storm in 1969 and ranked a more respectable 16th with a 9.04 total score.

Some other statistics show more severe weather: Worcester, Mass., had eight hours of blizzard conditions, with seven other cities having official blizzard conditions for three or more hours.

On Saturday in Boston, 14.8 inches of snow fell in one day, breaking the record from 1994. Portland, Maine, got a record 31.9 inches of snow, smashing the old record by nearly 5 inches. Snow records were also set in Bridgeport and Hartford, Conn.

There is a still-to-be-resolved question about the quality of snowfall data in Portland, and most of the nearby stations aren't over 30 inches, Squires said.

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