Season Snow Totals and Snow Depth as of February 16th

You may have noticed that temperatures across Upper Michigan have been above normal and that we have seen more bare ground than usual.  To put our snowfall totals in perspective, a table was created to compare the amount of snow that has fallen from November 1, 2011 through February 16, 2012, with the normal values calculated using the 1981-2010 climate normals, except where indicated.  The chart also shows the snow depth as of February 17, 2012 compared to the average snow depth through the month of February, also based on the 1981-2010 climate normals, except where indicated.  Keep in mind that the data shown below is preliminary data and has not undergone final quality control by the National Climatic Data Center (NCDC)...therefore these data are subject to revision and do not represent the final season totals.

  Values in italics are through February 14

Location 1981-2010 Avg. Season Snowfall Nov - Feb* 2011-12 Season Snowfall Nov 1 - Feb 16
Ironwood 143.3 88.6
Bergland Dam 134.7 117.6
Ontonagon 156.3 115
Watton **77.7 73.2
Iron River 47.5 41.1
Iron Mountain 42.3 24.0
NWS Marquette 145.8 101.2
Menominee 39.3 10.1
Chatham **143.1 59.9
Gladstone **48.1 22.8
Munising 123 71.1
Manistique 59.4 26.2

* 1981-2010 Normals are through the entire month of February while 2011-2012 season snowfall is through February 16, 2012.

**These data are not based on 1981-2010 climate data; rather, they are based on shorter time periods. The dates that follow each site were used for the calculation: Watton (2000-2010), Chatham (1987-2010) and Gladstone (2002-2010).

 

Location 1981-2010 Avg. Snow Depth for February 2012 Snow Depth as of February 17
Ironwood 20.4 10
Bergland Dam 24.7 19
Ontonagon 18.3 12
Watton **17.5 21
Iron River
11.9 12
Copper Harbor 22.2 11
Iron Mountain 12.2 M
NWS Marquette 23.9 21
Menominee 6.7 0
Chatham **16.8 9
Gladstone **13.9 3
Munising 26.3 17
Manistique 15.5 0

 **These data are not based on 1981-2010 climate data; rather, they are based on shorter time periods.  The dates that follow each site were used for the calculation: Watton (2000-2010), Chatham (1987-2010) and Gladstone (2002-2010).

 It can be seen that the snowfall totals and snow depths across the region are well below normal.  In most cases, this seasons snow fall is less than half the normal values.  There are a couple of exceptions such as Watton and Stambaugh, which are fairly close to normal.  The averages are figured through the entire month of February, while the data shown in the tables are through February 10, 2012.  This is part of the reason that the totals are lower, but it is still possible to see the trend in the data.  At this point it doesn't look as if there are any significant winter storms moving into the area over the next week or so, to change these totals significantly.
  

The images above show a spatial distribution of snowfall totals for the season as well as snow depth as of February 10, 2012.  The numbers to the left of the forward slashes ( / ) are for the current season, while the numbers to the right are the normal values, as indicated in the previous tables.  Note that the numbers displayed are the rounded numbers from the tables.



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