The economy grew at a 3.0% annual rate in the advance estimate for the third quarter, as the hurricanes appeared to have both positive and negative effects. The figures will be revised, but the story is unlikely to change much.
Inventories rose at a faster pace in 3Q17, adding 0.7 percentage point to the headline GDP growth figure. It’s often difficult to tell why inventory growth has picked up. It could signal business expectations of strong future sales, or it might reflect goods unsold due to unexpectedly weak demand. Dealer incentives helped clear the lots of motor vehicle dealers in September, but hurricanes disrupted overall consumer spending. The inventory figure will almost certainly be revised, but the pace had appeared to be picking up ahead of the hurricanes and there is often noise from quarter to quarter.
Net exports (a narrower trade deficit) added 0.4 percentage points to GDP growth in 3Q17, reflecting a further increase in exports (consistent with an improving global economy) and a decrease in imports (imports have a negative sign in the GDP calculation). Hurricane Harvey disrupted port traffic, reducing petroleum imports. Otherwise, imports would have risen (and subtracted from overall GDP growth), consistent with a strengthening domestic economy. This effect ought to unwind in the fourth quarter numbers.
Despite earlier hopes for a large-scale infrastructure spending program, nobody expected the federal government to add much to overall economic growth this year. State and local government budgets have improved in recent years, but we haven’t seen a corresponding unwinding of the budget cuts that took place in the early stages of the economic recovery (as federal support faded and budget strains were binding).
In many of her post-FOMC press conferences, Fed Chair Janet Yellen has spoken about Private Domestic Final Purchases (PDFP). PDFP can be thought of in two ways. It is GDP less net exports and the change in inventories. Inventories and foreign trade are a relatively small part of GDP, but they account for more than their fair share of volatility in quarterly GDP. PDFP is also the sum of consumer spending, business fixed investment, and residential investment – a measure of the “meat and potatoes” of the U.S. economy. PDFP rose at a 2.2% annual rate in the initial estimate for 3Q17, the slowest pace since 1Q16. However, that softness is almost certainly due to the hurricanes.