Health & Fitness
Lorton Precipitation Amounts Jan. 28 - Feb. 3, 2013; Groundhog day track record
Daily rain and snowfall totals for previous 24 hours measured at 6am from my rain gauge in Lorton.
It was warm this week. It was cold this week. On Saturday (groundhog day), Punxsutawney Phil did not see his shadow, and the forecast based on that was for an early spring. The National Climatic Data Center did an analysis of the national weather following Phil's predictions, and their analysis was that the groundhog “shows no predictive skill for the groundhog during the most recent years of this analysis” - his record since 1988. What’s the record look like? No shadow is a forecast of early spring (which should result in above normal temperatures) and shadow is continued winter (and cooler than normal temperatures).
Punxsutawney Phil's prediction and national temperatures
Year
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Shadow
February Temperature Departure
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March Temperature Departure
2012
Yes
Above
Above
2011
No
Slightly Below
Slightly Above
2010
Yes
Below
Above
2009
Yes
Above
Slightly Above
2008
Yes
Slightly Above
Slightly Below
2007
No
Below
Above
2006
Yes
Above
Above
2005
Yes
Above
Slightly Above
2004
Yes
Below
Above
2003
Yes
Below
Above
2002
Yes
Above
Below
2001
Yes
Slightly Above
Tied Average
2000
Yes
Above
Above
1999
No
Above
Above
1998
Yes
Above
Below
1997
No
Above
Above
1996
Yes
Above
Below
1995
No
Above
Above
1994
Yes
Below
Above
1993
Yes
Below
Above
1992
Yes
Above
Above
1991
Yes
Above
Above
1990
No
Above
Above
1989
Yes
Below
Above
1988
No
Below
Above
My calculations are that Phil was correct for February and March temperature forecasting less than 50% of the time. So maybe we can expect the rest of the winter to be kind of like this week - sometimes warm, sometimes cold. How’s that for a forecast?
Last week and here, my rain gauge in Lorton recorded the following precipitation at 6am on the day indicated for the previous 24 hours: