The unseasonable warmth which has been found across much of the Northeast and mid-Atlantic this week will quickly become a distant memory as Sandy approaches and colder air comes marches in from the west.
With Sandy continuing to blast toward the Atlantic coast, AccuWeather.com meteorologists anticipate the storm to make landfall early next week somewhere along the Northeast or mid-Atlantic coast.
At the same time, cold air advancing southeastward into the Ohio Valley, western Pennsylvania and West Virginia will drop temperatures a good 30 to 40 degrees cooler than they were on Thursday.
As thousands of East Coast communities get hit with damaging winds, power outages and flash flooding, some of the tropical moisture surging north and west of the storm may begin to interact with this cold air.
A large dip in the jet stream will pull Sandy ashore, and the two will merge together to form a powerful storm system that will affect most of the Northeast and mid-Atlantic.
While there continues to be a large amount of uncertainty with the track of Sandy and how it will interact with the intrusion of cold air from the northwest, it does appear likely that Sandy will bring the first accumulating snow of the season to some of the Appalachians. Unfortunately, it could come with a steep price.
Towns and communities located above 2,500 feet in the Appalachian Mountains from western Pennsylvania down into West Virginia and western Virginia will have the best chance to get snowflakes.
It isn't out of the question that some snow could fall in locations below 2,500 feet as well in these same areas.
According to AccuWeather Meteorologist Randy Adkins, "Given the fact that leaf drop is far from complete, the heavy, wet snow in the high terrain of eastern West Virginia will likely cause damage. This is a tree-crushing snow event should it indeed materialize as forecast."
Strong winds will also aid in knocking down trees with heavy snow on them. Power lines will also be impacted as well which could leave many in the dark for days.
Snow could begin to fall as early as Monday and continue into the middle part of next week.
While exact snowfall amounts are unknown at this time, it is possible that some locations could pick up a rather significant and hefty amount of snow.
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Darby will continue to deliver locally heavy rain, gusty winds and rough surf to Hawaii into early Monday. But the tropical storm will provide long-term benefits.
Gusty thunderstorms will target the northeastern United States on Monday, but will fail to sweep away the baking heat wave gripping the region.
Dangerous heat will surge northward and send temperatures soaring across the northwestern United States during the final week of July.
Downpours will spread from the lower Mississippi Valley to eastern and central Texas early this week, delivering needed rain but raising the concern for flash flooding.
With the heat of summer comes many unwelcomed pests, including mosquitoes, ants, fruit flies, wasps and stink bugs, into outdoor spaces and homes.
North Carolina (1975)
Lightning killed 13 cows during a thunderstorm at Kenansville. Heavy rains elsewhere in the state forced the Tar River out of its banks at Greenville, causing 14 families to evacuate their homes.
New York (1975)
Severe thunderstorms in western and central NY: lightning struck a city park in Rochester injuring 12 children, all were playing on a metal jungle gym. One patrolman described the scene as if "someone threw a stick of dynamite in the middle of the crowd and it blew."
Southeastern MA (1990)
Torrential rains: Middleboro 7.20" Bridgewater 5.00" Tauton 4.33" Abington 3.05" Cars were stranded in high water in Fall River, MA.