A widespread winter storm now hitting the area from Chicago to Washington, D.C., will devour New England on Monday and last through Wednesday

It’s the same storm that dropped eight feet of snow on Mammoth Mountain, California, Tuesday through Thursday

Here in New England we are in the coldest eruption since likely January 2018, as the low this morning at Island Pond in Vermont was -25 degrees The Boston low of 7 degrees marks the third straight morning in the single digits before this storm we got fading sunshine on Sunday afternoon with a nice break back to the teens and 20s and some light wind

With all this cold, we will see a strong storm centered close enough to Nantucket with wind coming from the sea With a water temperature of 41 degrees there is enough warmer air for a challenging snow / rain line

Sunday evening there will be a ring around the moon The old adage “ring for the sun or the moon, snow or rain soon” will certainly come true. Low temperatures overnight are well below zero in northern New England until well into the 20s towards the south coast

Just after sunrise, snow is developing on the south coast, slowly pushing north. It won’t be long before snow accumulates at 1 to 3 inches per hour Even if a change in rain is expected, we may need to plow snow before the change.In the first three or four hours of the storm, there will likely be more than 4 inches of snow – that is how long it can snow before it comes down from the Connecticut coast Cape Cod changes to rain

On Monday afternoon, if not earlier, snow arrives in the Boston area, near the mix line – the snow is not as deep as inland – this is the toughest and hardest hit area as there will be heavy wet snow and tomorrow night strong winds lead to power outages

It looks like the strongest band of snow in one place should last around 8 to 10 hours in a normal storm we could say 8 to 10 inches in that time, but there is such a steep gradient between the very cold high pressure system in the north and the relatively warm low pressure system in the south, that snowfall of 8 to 10 inch hours can add up to 10 to 15 inches

The snow band will advance from south New England to north New England early Tuesday and continue on. There are actually two low pressure systems, maybe even three, that will evolve and then re-develop and slowly move from Nantucket to the Gulf of Maine Hence we will continuously optimize the forecast during the entire long-term event

The worst wind is likely against high tide on Monday evening – then we will be gusting over 50 miles an hour from the northeast Coastal erosion and minor to moderate coastal flooding is likely.The early Tuesday afternoon tide may not be as dramatic but could be with some Other Problems Accompanying Rainfall should be lighter to ignite snow, maybe some freezing drizzle or drizzle on Tuesday in southern New England as the snow continues towards the Canadian border

The wind will come in from the north on Tuesday evening and all liquid precipitation will turn back to snow By Wednesday morning, deep puddles will freeze again towards southeast New England, clouds and the occasional light snow will likely last until Wednesday noon

Snowfall accumulation is likely 10 to 20 inches where all of the snow stays with some of the higher elevations getting closer to 2 feet. There will also be some holes in the snow accumulation on the windward side of some mountains in eastern Maine, the snow is changing probably in rain and then again in snow and ice, so that the accumulations remain small but still have a high impact

We rest a little on Thursday before a warm front brings a mixture of rain and snow showers on early Friday Then it’s windy and warmer with a chance of rain Friday through Saturday before it gets dramatically colder again late next weekend Week It’s a very busy 10 day forecast for First Alert

BOSTON weather

World news – USA – First warning weather: Major Nor’easter is pushing for New England

Source: https://www.nbcboston.com/weather/stories-weather/first-alert-weather-noreaster-bearing-down-on-new-england/2289462/