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.
Hurricane Ignacio may enhance showers and stir rough surf for the Hawaiian Islands as it approaches next week.
After Erika brings heavy rain and locally gusty winds from Hispaniola eastern Cuba into Friday night, the system will move toward the Bahamas, the Keys and South Florida this weekend.
As many as seven tropical cyclones were churning throughout the world this past week, while smoke from wildfires across the Pacific Northwest led to poor air quality across the region.
Heat and humidity will return to Harrisburg this weekend and hang on into next week.
Heat will linger in Eastern Europe for much of the fall season; meanwhile, the British Isles and northwestern Europe can expect a stormy end to the season.
As Hurricane Katrina barreled towards the Gulf Coast, peaking at Category 5 strength while feasting on the warm waters of the Gulf of Mexico, meteorologists around the country prepared to deliver one of the most crucial and life-saving forecasts in history.
Anchorage, AK (1989)
A total of 9.6 inches of rain -- wettest August on record.
New England (1816)
"Year in which there was no summer", otherwise known to weather historians as "1800 and frozen to death" killing frost once again damages sparse corn corp in northern New England...loss of this and other crops led to severe famine in much of New England that winter...and helped spur western migration in spring of 1817.
New England (1965)
A total of 2.5 inches of snow on top of Mt. Washington set an August record. Vermont had a reading of only 25 degrees, while Nantucket had a chilly 39 degrees. Earliest freeze on record at many stations.