For those with air travel plans, check in with your flight providers, which may be issuing fee waivers to adjust your reservations.

Continue below for storm details . . .

Storm 1: Friday night into Saturday

This is the messier of the two storms because of the mixed bag of wintry precipitation that will fall.

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Light snow will begin just after lunchtime Friday across Vermont, New Hampshire, much of Maine and areas north of the Massachusetts Turnpike. The snow will become steadier as the atmosphere saturates and cools.

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By 8 p.m., the snow will overspread the entire Interstate 95 corridor down to western Connecticut. It will accumulate to an inch or two in the Worcester Hills and the Monadnocks, while the White Mountains and areas to the north and east will see several inches of slushy snow.

Significantly, Massachusetts, Connecticut and Rhode Island could see freezing rain, which is the most hazardous for drivers.

Freezing rain occurs when precipitation falls as rain but turns into ice instantly when it hits the cold ground. We’ve been seeing a good signal for cold air damming to take place — it happens when cold air becomes trapped in a narrow layer close to the ground. That’s a key indicator for the formation of freezing rain.

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From midnight Friday through daybreak Saturday, areas north and west of Hartford, Providence and Boston will probably experience freezing rain. Locations closest to the coast will see only a trace of ice, but places north of the Massachusetts Turnpike may get one-tenth of an inch to a quarter-inch of ice accumulation.

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The freezing rain line will eventually move farther north as warm air circulates into the developing system and rain takes over; Maine, Vermont and New Hampshire will see a bit of brief icing before switching over to all rain Saturday afternoon. The freezing rain may linger a bit longer in the higher elevations of the Berkshires and the Worcester Hills.

No major problems are expected around New York City, where it is expected to rain through the duration of this first storm.

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As for the effect on travel, this system could delay some flights at Logan Airport through noon Saturday. It may be a bit bothersome for those flying into/out of Bradley or T.F. Green airports, but widespread issues aren’t expected. Problems on the roadways are much more probable. Ice and snow will snarl traffic along Interstate 91, the Mass Pike and Interstate 84 — which will already be heavily congested thanks to the holiday.

Your best bet for traveling into/out of New England will be on I-95, which will dodge any wintry mischief by staying mainly in regions warm enough for rain. Once you get up to New Hampshire and Maine, that may be a different story. You’ll have to play things by ear depending on how hard the snow is falling and how well the road crews are handling it.

Storm 2: Sunday night into Christmas Day

Models have been consistently developing a storm that will ride up the New England coast late Christmas Eve and Christmas Day. Where it goes, it has the potential to bring strong winds and a lot of precipitation. However, there are a number of uncertainties thanks to model discrepancies as we try to predict this five days out.

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For starters, if the storm develops too late, it will miss the Northeast altogether. Likewise, a storm far offshore would spell little in the way of impacts. If the storm moves a bit closer to the coast, as some models are calling for, that would put much of New England in play for a white Christmas, and then some.

Those most at risk to see a plowable snowfall include interior southern New England away from the immediate coastline, as well as coastal Maine and New Hampshire. Along the water’s edge, the storm may drag in enough warm air to bring mainly rain.

Some locations will see six inches of snow or more, but it’s too early to pinpoint where. Confidence about other effects is a bit higher, including rough surf, coastal beach erosion and strong gusty winds close to the ocean. Air travel is likely to be affected, especially in Boston and Rhode Island. Depending on what happens, roadways may be in tough shape starting Sunday night.