While the severity and path of the storm grabbing attention is still questionable, the impact would span Monday and Tuesday in central Pennsylvania.
How nasty the weather gets, if nasty at, all depends on the track and strength from Sandy, a hybrid storm, a nor'easter or a simple frontal passage.
In the worst-case scenario, an intense storm, turns inland from the Atlantic Ocean over New Jersey and Pennsylvania early next week.
Such a scenario would deliver high winds, heavy rain and perhaps high-elevation snow. Impacts would range from travel disruptions and foiled activities to downed trees, power outages and flash and urban flooding.
If the storm fails to turn westward over the region, a period or two of rain would occur Saturday night into Monday. Snow showers could occur over the mountains by early next week with noticeably blustery, progressively colder conditions for all.
Those looking for a break from the heat across the central United States will be in luck as a slow cooldown is in store starting this weekend.
The midwestern United States will be in the crosshairs of potent thunderstorms into Saturday night.
Much of the eastern United States will continue to swelter with above-average temperatures into the end of the month.
Conditions will deteriorate across Hawaii this weekend as Darby delivers locally heavy rain and rough surf. But the tropical storm will provide long-term benefits.
Stifling heat has been baking the central United States but will finally ease across northern areas this weekend.
Lightning killed a teenager on Friday, the second teen lightning death in three days. With thunderstorms continuing to rattle several parts of the nation, more lives will be at risk.
Simla, CO (1996)
4.5" diameter hail.
Mid-Atlantic Ocean (1788)
(22nd-24th) George Washington Hurricane; After causing ship disasters off SW Bermuda, the storm moved NW over Tidewater, NC and VA to pass right over George Washington's Mt. Vernon plantation. On July 24th, George Washington wrote in his diary: "About noon the wind suddenly shifted from NE to SW and blew the remaining part of the day violently from that quarter. The tide this time rose near higher than it was ever known to do, driving boats, etc. into fields, where no tide had ever been heard of before, and most, it is apprehended, having done infinite damage on their wharves at Alexandria, Norfolk, Baltimore, etc. At home all day."
Canton, IL (1975)
A tornado ripped through a 3-block section of downtown, killing 2 people, injuring 75 and creating $5 million damage. A 15-foot wooden plank was driven through an auto engine block, splitting the front of the car in two. The woman driving was not injured. National Guardsmen were called in to prevent looting.