Sunday, December 13, 2009

A Light Wintery Mix

A weak low pressure system will move across the plains during the day today and into the overnight, creating a mix of wintery precipitation across the state of Iowa and some decent snowfall amounts across parts of the northern plains.  The state of Iowa will roughly be split in thirds as far as precipitation amount and type goes with this system.  The northern third of the state will see snowfall during the day and overnight hours with accumulations of 1-2 inches possible.  The central third will see a mix of snow and freezing rain, with only light accumulations of each.  The southern third of the state may see a few freezing sprinkles or light showers during the overnight hours, with little accumulations if any expected.  The heaviest snowfall with this systems should fall across central Minnesota, including the metro areas of Minneapolis/St.Paul where 2-4 inches of snow may fall this evening and through the overnight.  For this reason there is a Winter Weather Advisory for many counties across central Minnesota due to this snowfall accumulation.

Beyond tonight weather system, more arctic air will move into the plains states leaving our temperatures in the single digits and teens with lows likely into the single digits above and below zero.  More details on our second arctic outbreak in the next update.