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Helping Business Weather the Storm

Hazardous Weather Outlook for Saturday, June 20, 2015

by WeatherOps, on Jun 19, 2015 10:27:17 AM

Strong to severe thunderstorms are possible from the Midwest into the Mid Atlantic and Northeast. Heavy rainfall and flooding is possible across the Tennessee Valley.

Midwest into Mid-Atlantic and Northeast: Remnants of Tropical Depression Bill will continue to advance eastward across the Tennessee Valley and into the Mid-Atlantic states ahead of an eastward advancing cold front pushing through the Midwest and Western Great Lakes. With plenty of moisture available and afternoon surface heating, a increase in instability is anticipated across the region on Saturday. Storms associated with remnants of Tropical Depression Bill will have the potential to become stronger to severe with damaging winds, hail and isolated tornadoes possible. Further north, across the Lower Great Lakes, some storms developing along the front in Illinois and Indiana could produce isolated storms which may have the ability to produce damaging winds, hail and perhaps an isolated tornado or two. Some uncertainty exists with expected ongoing overnight convection, which could inhibit afternoon development. However, afternoon development is anticipated. By evening, remnants of Tropical Depression Bill will be absorbed into the main upper level wind flow pattern, which will greatly diminish any severe weather threat.

Tennessee Valley: Remnants of Tropical Depression Bill will continue to track to the ENE on Saturday and begin to become absorbed into the main weather pattern centered over the Midwest and Great Lakes. Heavy rainfall is expected along the Southern Appalachians from Tennessee and into Kentucky and West Virginia. Accumulations of up to 2 inches will be possible with localized heavier amounts possible. Flooding and flash flooding could occur within low-lying areas.

Topics:Nowcast/Forecast

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