These maps show where Northern New England snow is off to a fast start this season

A look at snow totals across New Hampshire, Vermont, and Maine over the past week.Boston Globe

A strong upper-level system has been responsible for bringing multiple rounds of snowfall across portions of Northern New England since last week, igniting a fast start to winter across the White and Green Mountains. Parts of New Hampshire, Vermont, and Maine have reached double-digit snow totals, with Monday delivering a final round of 3 to 8 inches into the evening on the northwest side of the mountain slopes, prompting winter storm warnings and other winter weather alerts across ski country.

The strong low in the mid- and upper layers of the atmosphere has pushed the jet stream south of the region. This opened the door for cold air to funnel into New England from Eastern Canada, along with enough energy to spark multiple rounds of snow showers just when a handful of surface systems passed through.

The cold, northwesterly flow has consistently been forced upslope of the New England mountains, condensing into early-season snow that invited thousands of skiers and snowboarders to the slopes, just as ski resorts opened for the season.

The maps below detail the snowfall forecast for today, the weather pattern, and snowfall totals so far. The weather is set to change by Tuesday morning, providing a break from the snowy conditions.

A system rotates snow showers across Northern New England from Canada.Boston Globe

When you pair the broad, counter-clockwise flow of the upper-level system with passing surface storms, the weather system maintains enough energy and moisture to wring out as snow at the higher elevations.

Monday will be the last of a multi-day stretch where Northern and Western New England sees snowfall.Boston Globe

An upper-level low pushed the jet stream south of New England, allowing for cold air and a broad northwesterly flow to generate rounds of snow showers.Boston Globe

Parts of Northern New England has reached double-digit snow totals over the past week.Boston Globe

Winds continue to blow from the west-northwest on Monday with low pressure to the northeast and strong high pressure to the southwest.Boston Globe

The upper-level pattern reveals a broad cyclonic flow over New England.Boston Globe

Snow totals across New England for the last three days.NOAA

The cold, northwesterly flow has consistently been forced upslope of the New England mountains, condensing into early-season snowSaltwire

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