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Weekend Weather Outlook

UPDATED 7:30 AM EDT, June 22, 2013

UPDATED By WeatherBug Senior Meteorologist, John Bateman

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The northern Plains will be the epicenter for active weather this weekend, as the area will be plagued by severe thunderstorms. Elsewhere, afternoon showers and storms will hamper outdoor activities in the Southeast while cool temperatures take hold in the Rockies and along the West Coast for the first weekend of summer.

WeatherBug Meteorologist Addison Green has the latest in this exclusive WeatherBug National Outlook Video.

Today:

A slow-moving surface low pressure system will kick off severe weather in the northern Plains this afternoon and evening, bringing storms from Wisconsin to Wyoming. The biggest threats from these storms will be strong winds and large hail.

In the Southeastern U.S., a moist wind flow off the Atlantic Ocean will lead to fairly numerous afternoon and evening thunderstorms. While these storms are not expected to be severe, their very slow movement may lead to localized heavy rainfall amounts and flooding concerns.

Elsewhere, a few thunderstorms could roll across upstate New York, northern New England and the Ohio Valley by this evening. Meanwhile, sunny skies will dominate the southwestern U.S.

Behind the upper-level trough in the northern Plains, unseasonably cool air will invade the northern Rockies and parts of the West Coast. Temperatures only in the 60s and low 70s will be common, while the mountain peaks may not escape the 50s during the day. Highs in the 60s will be found along the West Coast as well.

The eastern U.S. and Ohio Valley will see highs in the 70s and 80s on Saturday, while 90s will be prevalent from the central and southern Plains to the interior valleys of southern California. Meanwhile, southern Arizona and southeast California could see temperatures spike into the triple digits.

Sunday:

The same stubborn low pressure system will kick off another round of strong storms from the Minnesota Arrowhead to the Front Range of the Rockies, bringing a continued threat for gusty winds and large hail. Numerous slow-moving storms will again soak the Southeast, threatening additional flooding from South Florida to the mountains of western North Carolina.

In the Pacific Northwest, the quiet weather today will be broken on Sunday as a fresh storm moves onshore, spreading showers from Seattle to northern California. Even New England and the interior Northeast could see additional pop-up thunderstorms.

Sunshine will again be plentiful across the southern Rockies and Southwest, while temperatures in the mountains will rebound slightly into the 70s. The East Coast will see widespread 80s, with a few spots even sneaking into the lower 90s. Highs in the 90s will extend into the central and southern Plains, while triple digits continue to hold on in the Desert Southwest. A cooling onshore wind flow will hold temperatures along the immediate West Coast in the 60s and low 70s.

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