Monday, April 20th 2009 Weather Outlook

20 04 2009

Monday’s Weather Outlook; Great Lakes/Southeast/Northeast System

12:00PM

On Monday, a system will continue to push northeast into the Great Lakes. Showers and storms will be possible over portions of the Great Lakes, Northeast and Southeast. There is a slight risk for severe storms in portions of Florida, Georiga, South Carolina, North Carolina, Virginia, Maryland and Deleware. CAPE values will be around 1500 J/KG, LI’s of -6, and Effective Bulk Shear values of 45-60KT. This along with a system pushing through, will help storms become severe. Severe storms will develop along and ahead of the cold front in the Afternoon, from Virginia down into Georiga. These storms will push east, before weakening in the Evening. The main threats will be hail, damaging winds, and an isolated tornado. In the Southern Great Lakes and Ohio Valley, a weak wave will push through on the backside of the main system. With limited instibility and low freezing levels, some storms may become severe with a small hail threat .On the north side of the system, snow will be possible in portions of Minnesota, Wisconsin and Michigan. Some accumulation is likely. Below is the severe weather and snowfall outlook for Monday.

sev-436

snow-242

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