People in central Pennsylvania will be hit with damaging wind and flooding rainfall from Sandy through Tuesday.
In the Keystone state and over much of the Northeast, the storm will threaten lives and property and will bring widespread travel disruptions.
Sandy is forecast by AccuWeather.com to make landfall near Atlantic City, N.J. Monday evening and to push inland over Pennsylvania late Monday night and Tuesday. However, effects from the powerful and massive storm will precede landfall, while impact will linger for days after the storm's demise.
The worst conditions will occur locally late Monday night into Tuesday.
Since Sandy is such a large storm in terms of surface area, effects will be more than a small category 1 or 2 hurricane hitting the coast or a nor'easter.
According to AccuWeather.com CEO Barry Myers, "Sandy is a hurricane wrapped in a winter storm."
There will be major impact due to wind and flooding as far north as portions of New England and as far south as Washington D.C. and Norfolk, Va. and as far west as the Great Lakes.
At this time AccuWeather.com meteorologists expect wind gusts in the neighborhood of 50 to 60 mph in central Pennsylvania. Gusts can be higher over the ridges, on top of buildings and through the gaps in the mountains.
Gusts this strong will down trees, power lines, send loose objects airborne and cause minor property damage.
Avoid walking or parking under trees as large limbs can come down with no notice.
The heaviest rainfall, a general 4 to 8 inches, is projected to fall over central Pennsylvania over a several-day period through Wednesday. The greatest amount of rain is likely to fall over northern Maryland and southern Pennsylvania. Flooding of the Potomac River mid- to late-week is likely as a result.
Enough rain will fall in the local area to raise the risk of flash, urban and stream flooding. Fallen leaves will block storm drains adding to the potential for street flooding.
Heavy snow will fall over the high ground in West Virginia and south central Pennsylvania.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
Spring of 2016 could rank in the top 10 warmest on record for Canada.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.
The next windstorm to target Europe will narrowly miss the United Kingdom on Saturday before a cold snap settles in for Valentine’s Day and Monday.
Passengers on the latest voyage of Royal Caribbean's Anthem of the Seas faced the complete opposite of a care-free, relaxing experience after an encounter with a ferocious storm in the Atlantic.
Philadelphia, PA (1899)
(11th-14th) 18.9" of snow; fourth biggest snowstorm on record. Unofficially, 44" between Philadelphia and Atlantic City. Blizzard conditions and high winds and bitter cold.
Raleigh, NC (1899)
(11th-13th) 17.7" of snow.
Richmond, VA (1899)
(11th-13th) 16.3" of snow, fourth biggest snowfall on record.