After powerful thunderstorms struck the Northeast early in the week, the weekend will end up being very wet for many with an elevated risk of flooding in some areas.

According to AccuWeather Chief Meteorologist Elliot Abrams, A storm from the Midwest will grow in size and gather moisture as it heads through the Northeast this weekend.

Saturdays rain will mainly focus from southern Ontario to western New York and Pennsylvania, including the cities of Cleveland; Buffalo, Rochester and New York, New York; and Pittsburgh and Erie, Pennsylvania.

Some stronger storms are also forecast to accompany the rain, mainly near or south of the Mason-Dixon line.

The heaviest rain is expected Saturday and Saturday night, shifting from western Pennsylvania to central New York and to the I-95 corridor from Boston to Washington, DC

Outdoor events this weekend ranging from camping trips and weddings to pool days could require alternate planning.

Baseball games this weekend could have rain delays, including two games at PNC Park in Pittsburgh, two games at Citi Field in New York City and Citizens Bank Park in Philadelphia, and the game at Camden Yards in Baltimore.

Those headed to the beaches along the coast of the mid-Atlantic will also face unfavorable weather conditions for enjoying the first weekend of summer in the water, laying on the sand or walking up and down the boardwalk.

With this slow-moving storm, heavy rain and torrential downpours will occur throughout the mid-Atlantic, central Appalachians and New England.

Areas from Ohio to parts of West Virginia, Pennsylvania and New York will state are likely to receive a general 2-4 inches of rain with lesser amounts near the mid-Atlantic and New England coasts.

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While the New England coast may stay dry during the day Saturday, before wet weather arrives, areas from northern West Virginia across much of Pennsylvania and western and central New York State, there could be 4-6 inches of rain locally with flooded streets and streams, Abrams said.

Abrams is concerned about a flooding disaster occurring in some communities in the Northeast with this storm.

We have seen multiple serious flooding events where heavy rain has persisted during May and June, such as Texas, Oklahoma and more recently the middle Mississippi Valley, Abrams said.

Abrams urged people to be vigilant with this storm and to perhaps avoid camping along small streams or attempting to drive through flooded roadways.

Parts of the Northeast have been very wet this June. Washington, DC; Baltimore; Youngstown, Ohio; Binghamton, New York and Burlington, Vermont; to name a few, rank among the top ten wettest Junes on record, prior to this weekend storms arrival. With the anticipated rainfall this weekend, some of these locations could have their wettest June ever.

Among the top 10 rankings was June 1972, when Agnes came calling.

According to AccuWeather Senior Meteorologist John Gresiak, This weekend, parts of the Northeast could have their wettest and coolest June day since Agnes.

Temperatures in some locations during the storm will hover in the lower 60s and perhaps even the 50s on Saturday or Sunday.

Flooding on roadways and poor drainage areas is also likely with this storm. Some major highways where traffic could be affected by downpours include I-70, I-79, I-80, I-81, I-86, I-87, I-88, I-90 and I-95.

This setup will end the extreme heat wave that has been baking the Southeast.

With the track of the system now shifting farther north, the weekend looks like heavy rain will pass through in addition to a more refreshing air mass for much of the East Coast by late Sunday.

AccuWeather Meteorologists Courtney Spamer and Alex Sosnowski contributed content to this story.

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