Saturday, March 28th 2009 Weather Outlook

27 03 2009

Saturday’s Weather Outlook; Plains/Great Lakes/Mississippi Valley/Southeast/Northeast System, Northwest System


On Saturday, a system will continue to work eastward as it heads into the Great Lakes, while a sysstem enters the Northwest. Showers and storms will be likely in the Mississippi Valley, Southeast, Northeast and Ohio Valley, ahead of an approaching storm system. There is a slight risk for severe storms in portions of Mississippi, Alabama, Georiga, Fliroda, North Carolina, South Carolina, Tennesse, Kentucky, Illinois, Indiana and Ohio. CAPE values will get up around 1500 J/KG, LI’s of -5, dew points in the 60’s and Effective Bulk Shear Values up to 55-65KT. This alongwith a cold front and warm front moving through the area associated with the system, will help storms become severe. The main threats will be damaging winds, hail and some tornadoes. On the north side of the system, snow will be likely in the Central Plains up into the Great Lakes. Heavy snow will be likely, with thundersnow and snowfall rates of 2-3 inches per hour being possible. Winds will be gusting over 30MPH, causing near blizzard conditions at times. Accumulations are likely, with a heavy axis of snow accumulations running from Oklahoma and Kansas up through Missouri, Illinois, Eastern Iowa, and up  into Wisconsin and Michigan. Over 6 inches of snow may fall in some area of this axis. In the Northwest, a new system will push onshore. Rain will be likely in the lower elevations, with snow in the higher elevations. Accumulations are likely. Below is the severe weather and snowfall outlook for Saturday.





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