Snow Accumulation Estimates Rise Again As Blizzard Forecast Sunday

Up to two feet of snow is now forecast to fall across Connecticut as a powerful nor'eastern storm arrives on Sunday.

A blizzard warning has been issued for the entire state. The heavy snow moves in this evening and really ramps up at night and Monday morning with snowfall rates of 2 inches per hour expected.

The National Weather Service said travel conditions could be "treacherous" at the height of the storm. The snow should begin to ease up Monday afternoon.

"I am urging everyone to plan ahead and stay off the roads on Sunday night and through at least Monday morning," Gov. Ned Lamont said.

See related: State Of Emergency Declared In CT By Gov. Lamont: Here's What You Need To Know

Details on timing

"Today starts with a chance for snow, especially inland that could create a coating up to 0.5″, otherwise mostly cloudy. Isolated to scattered snow showers are possible during the afternoon. The steadier snow doesn’t begin to work into CT until the evening hours form south to north - so any plans before then should be good to go," said WFSB 3 TV meteorologists. "Tonight, snowfall will really begin to ramp up and conditions will deteriorate. Snowfall rates will increase to 1-2″ per hour and thundersnow can’t be ruled out. Snowfall rates could exceed 2″ per hour across eastern CT heading into Monday morning."

"The storm is expected to peak around daybreak Monday, with heavy snow continuing until midday and gradually tapering off in the evening," added WFSB 3 TV meteorologists. "Snowfall totals have been trending up with this storm, and our latest forecast is for 10-20″ of snow for most of the state, with locally higher amounts possible. If current model trends continue, the lower end of that scale would be through the CT river valley and locally higher amounts are expected across eastern CT."

Here are the latest updates from the National Weather Service:

Coastal sections of southern Connecticut:

A blizzard warning is in effect from 1 p.m. to 6 p.m. Monday. Blizzard conditions. Additional snow accumulations between 17 and 24 inches. Winds gusting as high as 60 mph.

"Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning and evening commutes."

Inland sections of southern Connecticut:

A blizzard warning is in effect from 1 p.m. to 6 p.m. Monday. Blizzard conditions expected. Total snow accumulations between 16 and 20 inches. Winds gusting as high as 55 mph.

Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. Heaviest snow and strongest winds are expected tonight into Monday.

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Hartford, Tolland and Windham counties:

A blizzard warning is in effect from 4 p.m. to 7 a.m. Tuesday. "Blizzard conditions expected. Total snow accumulations between 12 and 20 inches. Winds gusting as high as 55 mph."

"Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage."

Litchfield County:

A blizzard warning is in effect from 1 p.m. until 7 p.m. Monday. Heavy snow expected. "Blizzard conditions expected. Total snow accumulations between 12 and 18 inches. Winds gusting as high as 50 mph."

A powerful nor`easter will impact the region late this afternoon through Monday. The higher snowfall amounts will be favored across the higher elevations. Snowfall rates may reach 2 inches per hour at times tonight into early Monday morning.