Using our preferred Modified Limo method for forecasting GDP, we anticipate that U.S. GDP for the fourth quarter of 2011 has roughly a 68% probability of being between $13,252.9 billion and $13,533.7 billion in terms of constant 2005 U.S. dollars. It has a 99.7% probability of falling between $12,972.5 billion and $13,814.5 billion. The midpoint for our forecast range for GDP in 2011-Q4 using the data available to us now is $13,393.3 billion, in terms of constant 2005 U.S. dollars.
Looking at where U.S. GDP for the third quarter of 2011 has now been adjusted, we note that the midpoint of our forecast range for this quarter is now within 0.28% of where the BEA has revised its GDP estimate.
There will be one more scheduled revision of GDP data for this quarter. We will update our forecast for 2011-Q4 GDP accordingly when this third estimate is released.
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