Wet Octobers & Winter

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Grand Rapids just wrapped up the 2nd wettest October on record.  When we get to this time of year, folks always ask me, "What does that mean for the winter?"  So, I thought I'd oblige by looking at the rest of the list.

10 Wettest Octobers on Record in Grand Rapids

Year     Following Season Snowfall
------------------------------------------------------------
1954     72.3"
2009     ????
2001     105.3"
1911     53.5"
1969     84.6"
1941     69.0"
1991     87.8"
1959     90.7"
1988     62.4"
1990     60.6"

Average snowfall in Grand Rapids is essentially 72" (6 feet).  So, the range here is all over the place, from well below average to well above average.  One year right at the average, four below, and four above.

In other words, there's nothing you can take away from that one piece of data.  Regardless, you always have to be careful when trying to make these sorts of correlations and predictions.  Even the Climate Prediction Center's forecasts deal in probabilities, not what we call "deterministic" forecasts.  So it's very easy to read too much into any conclusion you might reach from this sort of analysis.

I'll discuss that further in the coming weeks.

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This page contains a single entry by Jon Shaner published on November 2, 2009 7:48 AM.

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Winter hazards awareness week is the next entry in this blog.

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