Dec 9, 2014

2014-15 First Day of Winter

The winter of 2014-15 has begun. Winter is officially here, in my backyard. Let me review the the conditions that constitute a winter season. The definition of a Winter Season Duration (WSD) is as follows, and in the case of OSNW3, six(6), is used for "several" consecutive days.

First Day of Winter represents a daily max temp equal or below 32°F and a snow depth of 1" or greater for several consecutive days.

Last Day of Winter represents a daily max temp equal or above 32°F and a snow depth less than 1" for several consecutive days.


The winter of 2014-15 began on Nov 21, 2014. Which is the earliest by 2+ weeks since 2006. Below is a graphical representation through Dec 9, 2014.

Just an FYI. The winter of 2013-14 lasted 109 days, so did the winter of 2012-13.

I have WSD data back through 1990 for Oshkosh/OSNW3. For the summaries please click here. If there are any questions, comments, or suggestions on the material presented please let me know. Thanks for reading!

Jul 31, 2014

July Summary

OSNW3 July 2014 Daily Observations

(click on graph for the month summary data - it will open a new tab/window)