The drop is not that odd for a December.
In December 2007 we had a drop of 0.6%, in December 2008 a drop of 2.5% (part of the big whopper decline of 12.25% between summer 2008 and March 2009), and in December of 2011 a drop of 0.3%.
The drop in January 2014 when GDP went severely negative was 1.26%, so the 0.94% magnitude this time does not augur well for 4Q2014 GDP.
