Thursday, October 15th 2009 Weather Outlook

14 10 2009

Thursday’s Weather Outlook; Midwest/Great Lakes/Ohio Vlley/Mid-Atlantic System, Mid-Atlantic/Northeast/Southeast System, Northwest System

11:15PM

On Thursday, a system will push through the Ohio Valley and into the Mid-Atlantic, while a system moves up the East Coast, and another system continues to affect the Northwest. Showers and storms will be likely in portions of the Northeast, Mid-Atlantic and Southeast, associated with the system off the east Coast. Some storm may become severe in portions of the Southern Mississippi Valley and Southeast. As Cape values will be around 2000-4500 J/KG, LI’s up to -7 and Effective Bulk Shear values up to 60KT. The lack of forcing will limit the overall severe threat and coverage. The main threats from any storms that become severe, will be damaging winds, hail and an isolated tornado. On the north side of the system, snow will be likely in the interior areas of the Mid-Atlantic and Northeast. Snow accumulations will be likely, especially in higher elevations of Pennesylvania, Maryland, New Jersey, New York and Conneticut. in The Great Lakes, a system will dive through the area, and into the Ohio Valley. Rain and snow will be likely in portions of the Midwest, Great Lakes and Ohio Valley. Little snow accumulation is expected. In the Northeast, a system off the coast will continue to affect the area with rain, and snow in portions of the Rockies. Below are the thunderstorm and snowfall outlooks for Thursday.

sev 688

snow 25

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