Latest Snow Map

Ice Storm to Threaten Travel, Cut Power

Interstate 95 Corridor May get more Snow Friday

First Significant Snow for Downtown Philadelphia, Washington, D.C.

Treacherous Ice to Hit Kentucky

Super Bowl XLIII Forecast

Raw Video: Salt Lake City Snowstorm

Raw Video: Heavy Snow California

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Snow is currently falling across the Denver area and surrounding mountains and will continue through midday tomorrow, affecting travel conditions.

The Denver metropolitan area will receive 2 to 4 inches, while the surrounding mountains can expect and additional 8 to 12 inches, with the possibility of exceeding a foot in some spots. The snow in the mountains is falling on top of the 1 to 3 feet of snow that already fell over the weekend. Winds are expected to be 10 to 20 mph in the area.

Travel conditions are expected to be difficult through the duration of the storm. The area surrounding Interstate 70 will be especially dangerous. Motorists are urged to take caution when traveling. Delays are also anticipated at Denver International Airport, with delays also likely in surrounding airports.

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Heavy snow will spread across the Lower Midwest and into the Northeast and mid-Atlantic this week in a two-part system that could give Philadelphia its first significant snowfall.

The first and weaker system will spread lighter snow from the central Plains to the Ohio River Valley tonight. Some snow will also streak east reaching the mid-Atlantic coast, including in the Philadelphia area, by daybreak. A bit of snow will continue into Tuesday along this corridor.

A heavier round of snow will spread from the Ohio River Valley into the Northeast and mid-Atlantic on Tuesday night into Wednesday.

A swath of 3 to 6 inches of snow will be delivered to central Illinois, central Indiana and a large part of Ohio.

As the snow ramps up and pushes into the mid-Atlantic on Tuesday night into Wednesday, 3 to 6 inches of snow will fall over a large part of Pennsylvania, upstate New York and much of New England. Six to twelve inches is expected to fall from northeastern Pennsylvania to western and central Massachusetts and southern New Hampshire.

Philadelphia will have 1 to 3 inches of snow before mixing in with or changing over to sleet and freezing rain. The heaviest snow will fall on Tuesday night before sleet and freezing rain start mixing into the evening. The northwestern suburbs will likely have more snow before changing over to a mix, which will cause messy road conditions for the Wednesday morning commute.

Only 1.1 inches of snow has fallen there since Dec. 1, 2008, which will make the upcoming system the first significant snow in the city for the year.

Roads in New York City will also be a mess on Wednesday morning as heavy snow will fall on Tuesday night, without any mixing. Two to four inches of snow is expected to fall, as some sleet and freezing rain will start to mix in during the day on Wednesday.

Boston will have 4 to 8 inches of snow on Tuesday night through Wednesday without any mixing expected as enough cold air will remain in place. The heaviest snow will fall on Wednesday.

• Detailed Forecast for Washington, D.C.
• Treacherous Ice Spreading from Oklahoma to Virginias
• Snow Impacts for Midwesterners
• Winter Weather Center
• Winter Storm Warnings and Advisories in Effect
• Snow Prospects in the East

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A wintry mix will develop today and cause problems over parts of the southern Plains before significant icing occurs from northeastern Oklahoma to Kentucky tonight into Tuesday.

A southerly flow from the Gulf of Mexico will continue to draw warm, moist air northward over the southern Plains and Lower Midwest through the beginning of the week. As this happens, the warm, moist air will lift over freezing cold air at the surface across these regions, allowing freezing rain and sleet to develop.

The first areas expected to be impacted by icing are parts of Texas, Oklahoma, Kansas, Missouri and Arkansas. Freezing drizzle, light freezing rain and sleet will develop across these states by this afternoon, impacting locations like Oklahoma City, Tulsa, Okla., and Springfield, Mo.

A light coating of ice may develop quickly and cause sidewalks and roadways to become slippery by the late afternoon and evening in these areas.

The most severe icing will develop and also shift eastward tonight, impacting northeastern Oklahoma, northern Arkansas, southern Missouri, southern Illinois, Kentucky and parts of Tennessee. These same areas will have heavy freezing rain into Tuesday.

The potential exists for 0.25 to 0.75 of an inch of ice to accumulate in the aforementioned corridor late tonight through Tuesday. Some areas could even have more than an inch of ice.

Not only will travel become extremely dangerous, but the weight of ice will down power lines and cause power outages. Some tree limbs may also be downed with the weight of the ice, adding to the treacherous conditions

Some cities at risk for significant icing include Cape Girardeau, Mo., Paducah and Lexington, Ky. The heaviest icing is expected to be in Kentucky, which will begin late tonight.

Some residents of the mid-Atlantic will also need to be prepared for ice. Freezing rain and sleet is anticipated to expand farther east through the Virginias and possibly into parts of Maryland and Delaware on Tuesday and Tuesday night.

• Easterners Brace for Snow and Ice
• Significant Icing from Oklahoma to Virginias
• Treacherous Ice to Hit Cape Girardeau
• Messy Travel into Indianapolis Tuesday

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Following the first round of heavy snow that will spread through the mid-Atlantic and Northeast on Tuesday into Wednesday, another system could possibly give these regions even more snow toward week's end.

Forecast models are indicating that a storm may develop somewhere along the central Gulf Coast toward the end of the week, moving northeastward along the coast of the Carolinas by Friday and passing to the east of the mid-Atlantic and New England into Saturday.

There is a possibility this storm may stay far enough offshore to have only minimal impact on the mid-Atlantic. However, if this storm ends up taking a track farther west, it could deliver another round of snow to the region heading into the weekend.

With a track farther to the west, areas along the Interstate 95 corridor from Washington, D.C., to New York City could receive some snow from this storm on Friday.

The better chance for snow, however, will be farther north along the I-95 corridor from Providence to Portland, as the storm is likely to track closer to eastern New England.

AccuWeather.com meteorologists will continue to monitor the potential impacts of this storm throughout the upcoming week.

• Interstate 95 Corridor May Get More Snow Friday
• Brett Expands on the Long Range
• Snow Already in the Forecast for Boston

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