Update at 1:40 p.m.: With an additional 7.6 inches of snow over the past six hours, Boston has broken its 40-day snowfall record in 17 days. The additional snow also makes this season the 10th snowiest for Boston, with a total of 73.9 inches. The old 10th-place record was 73.4 inches in 1919-1920.

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“The next threshold to surpass would be 77.2″ from the winter of 1944-1945, which now is #9 on the list,” says the National Weather Service.

Boston Logan Int’l. Airport picked up 7.6 additional inches in the last 6 hours (ending at 1 PM), bringing their storm total to 19.7″ since Sat. This brings their seasonal total to 73.9″ which takes over the #10 spot for top snowiest winters (which was 73.4″ set back in 1919-1920). The next threshold to surpass would be 77.2″ from the winter of 1944-1945, which now is #9 on the list.

Bostonians are crying uncle on Monday morning as they endure yet another crippling, multi-foot snowstorm — one that has pushed Boston’s seasonal snowfall total to nearly six feet, most of which has fallen in the past couple of weeks.

Snow began to fall across the Northeast on Saturday evening, and after a brief respite Sunday afternoon has persisted into Monday morning. So far, Bostonians have seen an extra 12 inches on top of the 25 inches they had on the ground before this storm began, with more on the the way through Monday evening. Norfolk and Plymouth counties, south of Boston, will likely see the largest accumulations since Saturday. Nearly 20 inches of snow has fallen there already.

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Eastern Massachusetts snow totals as of 9:30 a.m.
North Weymouth — 19.8 inches
Norwell — 18.5 inches
Hingham — 16 inches
Milton — 14.6 inches
Boston Logan — 12.1 inches
Winthrop — 12.1 inches

Heavy bands with snowfall rates up to two inches per hour are sweeping across eastern Massachusetts on Monday morning. In addition to the totals above, another 6 to 10 inches of snow is possible in eastern Massachusetts on Monday afternoon, with larger amounts in the heaviest bands. This would put the highest snow totals above two feet.

The most intense snowfall should clear out of the region by 6 or 7 p.m., but models are suggesting that moderate snow could still be falling in far eastern Massachusetts, including the Boston metro, during the evening commute. Flurries and light snow could last through most of Monday night across southern New England.

The early-week snow comes in a long succession of winter storms that have brought Boston’s seasonal total to over five feet of snow.

Logan International Airport has accumulated 66.3 inches of snow so far this winter through Monday morning. Over 60 inches of that seasonal total has fallen in the past 20 days alone, setting new records for the 20- and 30-day periods. The previous maximum 30-day snowfall was 58.8 inches ending Feb. 7, 1978. The new record currently stands at 61.6 inches as of 7 a.m. Monday, plus the additional accumulation through Monday evening.

The 20- and 30-day records are just the most recent to be set in a month of snowverachieving. New England’s back-to-back blizzards in late January and early February also broke multiple records for snowiest periods in Boston — Monday, Feb. 2, ended the snowiest 5-, 7- and 10-day periods for the location since records began there in 1891.

Of course, there are always new heights to climb. By the end of this week, Boston’s snowfall total could be in the running for one of the top 10 snowiest seasons on record.

The third snowstorm to hit Boston and the surrounding region in less than three weeks is expected to dump up to two feet of snow. (Reuters)

Monday morning’s run of the GFS model suggested the Northeast is going to get walloped by another winter storm later this week. Final totals will depend strongly on the track of this particular coastal storm, which is forecast to track across the Great Lakes and then up the Northeast coast, but current projections suggest the potential for another one to two feet of snow by week’s end.

Boston’s snowiest season on record was 107.6 inches in 1995-1996.