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"Thank you for stopping by the Weather Watch 12 Blog!  A quiet end to November is expected before kicking off the start of Meteorological winter on Thursday.  December is typically the first month to bring southeastern Wisconsin a healthy dose of winter weather.In today's blog we will look ahead to December using our weather pattern theory called the LRC.  We use this theory to make long range forecasts.  While we continue to learn more about the new pattern everyday, enough information is now available to provide some insight to the coming month.Let's start with Milwaukee's December averages. Precipitation: 2.04\"\nSnowfall: 10.6\"\n\n The first storm system to impact the area in December will arrive this weekend.  Since this storm is just a few days away and will be covered on WISN 12 News, we will jump ahead and focus on mid to late December.A couple of features have really grabbed my attention for December.  The first is a warm-up that should arrive around the 3rd week of December.Below is the 500mb archived map from November 5, 2011.  While a storm system digs into the West, mild weather is pushed into the Midwest on a southwest flow aloft.  This should lead to above average temperatures around December 19 to 23.The warm-up will precede what I anticipate to be a sizable(potentially major) storm system.  This storm last moved through our cycling weather pattern on November 8-10.  Below is the 500mb chart on November 9.  The trough over the central U.S. is where the storm was located.I expect this feature to return around December 23-27.  Since very mild air will rush in ahead of the storm, it's hard to tell the exact precipitation type this far in advance.  Don't cancel any plans you have around this timeframe, but just keep in the back of your mind that something may develop in the nation's mid-section around Christmas.  The hope of seeing a white Christmas in southeastern Wisconsin may hinge on this storm!Overall for December snowfall should finish above average.  This is clearly assuming that colder air arrives and that the precipitation we see in weeks 2-4 of December is primarily snow.These are our initial thoughts looking ahead to December, once confidence grows and the exact cycle duration is pinned down we may have additional updates as the month progresses.Have a great day!Jeremy Nelson"^^<http://www.w3.org/2001/XMLSchema#string>
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