29. The Iowa low (from yesterday's post) could bring a swath of 4 to 8 inches of snow to Wisconsin Thursday.
The map from USWX.com (to the right) shows where current watches exist in Wisconsin, extending southwest into Iowa and northeast into the UP of Michigan.
The watches highlight the possibility of snow greater than 6" over the watch area. As we approach the actual snow event and the exact snowfall amount become more clear, the watches may be changed into Advisories (less than 6") or Warnings (6" or more).
Any changes in the path of the low pressure system could mean large changes in snowfall amounts.
"EXACT TRACK COULD MEAN BIG CHANGES IN SNOWFALL. RIGHT NOW...EXPECT TRACK TO BE FAR ENOUGH TO THE SE TO BRING ADVISORY CRITERIA SNOW TO OUR SOUTHEASTERN CORNER...MAINLY PRICE CO. SOMETHING IN THE 3-6 INCH RANGE...WITH LESSER AMOUNTS TO THE NW...EXCEPT FOR THE SNOWBELT WHERE ONSHORE WINDS WILL BRING SOME LAKE EFFECT SNOW."
Snow will become likely across northwestern Wisconsin by Thursday afternoon, but it's difficult to pinpoint exactly how much snow will fall. Also to be taken into consideration, once the low passes to the northeast, there will be a period of wind favorable for Lake-effect snow -- this may bump up the totals in certain favored locations. As of now, for my location on Maple Hill, the official forecast calls for between 2 and 4 inches of new snow.
The picture (above) I took yesterday behind my house here on the hill. White Spruce, Red Oak, Sugar Maple, White Birch, and about 2 feet of snow in the woods.
The rest of Northwestern Wisconsin.
Derek's area, in the southern part of northwest Wisconsin, could also see several inches of snow from this system. For current information and post-storm snowfall amounts, see his NW Wisconsin Weather Blog.