Monday, September 28th 2009 Weather Outlook

27 09 2009

Monday’s Weather Outlook; Great Lakes/Northeast/Mid-Atlantic/Southeast System, Norhtwest System

11:30PM

On Monday, a system will push through the Great Lakes, while a new system enters the Northwest. Showers and storms will be likely over portions of the Great Lakes, Northeast, Mid-Atlantic and Southeast, assocaited with a system pushing through the Great Lakes. A few storms may become sever ein portions of the Eastern Great Lakes, Northeast, Mid-Atlantic and Southeast. As CAPE values will be around 250-1000 J/Kg, LI’s up to -5 and Effective Bulk Shear values up to 70KT. The lack of instibility 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. High winds will be likely with this system over portions of the Great Lakes, Ohio Valley and Northeast, as strong wind fields will move through with this strong early fall system. Unseasonably cool temperatures will push in behind this system. In the Northwest, Showers and some storms will push into the area late in the day, as a new system pushes onshore. Below is the thunderstorm outlook for Monday.

sev 663


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