Dangerous thunderstorms to threaten midwestern, northeastern US on Saturday

By By Renee Duff, meteorologist
June 12, 2016, 12:46:25 AM EDT

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Locally violent thunderstorms will threaten outdoor activities from parts of the lower Great Lakes to the mid-Atlantic region during the first half of the weekend.

"Exactly where a disturbance forms and travels late this week will determine the eastward extent of the severe weather on Saturday," according to AccuWeather Senior Meteorologist Alex Sosnowski.


At this time, residents from Detroit and Cleveland to Pittsburgh, Philadelphia, New York City, Baltimore, Washington, D.C., and Buffalo, New York, will want to monitor the weather closely during the early part of the weekend.

Winds capable of downing trees and power lines will be one of the main threats from any storms on Saturday, AccuWeather Meteorologist Ryan Adamson explained. Hail and torrential downpours are also likely.

People may want to bring potted plants or other loose lawn items inside to prevent damage from thunderstorm winds.

Severe storms may jeopardize afternoon and evening MLB games in Pittsburgh and Washington, D.C. New York City may be on the northeastern fringe of the showers and thunderstorms.

Those with plans to swim at a local pool or attend an outdoor festival should keep an eye to the sky and be prepared to seek shelter at the first clap of thunder.

Storms may maintain their severity into the evening as they continue eastward and southward.

Cool air is expected to hold firm across much of New England and may prevent severe weather from moving eastward into the region on Saturday. However, there can be showers and rumbles of thunder advancing eastward over New England into Saturday night.

People in New England should monitor the weather, in case the situation changes.

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A sharp temperature boundary, separating chilly air in the Northeast states with building, sweltering heat in the Central states, will provide an avenue for the storms to travel upon.

“Hot air will be advancing eastward across the Midwest into this weekend,” Adamson said.

In this type of setup, it is common for large thunderstorm complexes to develop and sweep across the leading edge of advancing warmth, Adamson said.

The thunderstorm complex capable of bringing severe weather to part of the mid-Atlantic will develop around the Great Lakes Friday night and will begin to travel southeastward Saturday morning.

Another batch of thunderstorms may erupt and move southeastward during Saturday afternoon.

Exact timing and location of the severe weather will become available, once the severe thunderstorms develop.

Quiet weather will settle into the affected areas on Sunday.

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