Wednesday, January 21, 2015

Saskatchewan Screamer to Impact the Midwest Sunday

Current indications are continuing to support an active "clipper-like" pattern to hold across the Midwest over the next week. A weak system will bring light snow showers to Minnesota and Wisconsin Friday into Saturday, but the heaver action comes in again for Sunday.  The above map shows two somewhat consistent models and their take on the snow maker for Sunday.  The trend has been to place the heaviest band of snow more northeast with every model run, something will will need to watch. The trends and data support around 0.3" of precipitation in the heaviest band, and lesser amounts away from the deformation zone.  With such a cold air mass in place, this could translate into a max of 5"/6" of light fluffy snow, with a 18:1 ratio. We are expecting a wide band of 1-3" of snow on Sunday, and the potential of 3-5" in a narrow band of winter weather advisory-like snow. Be sure to stay tune for the latest trends and an eventual snow map on this low pressure system.