This Friday, the government will release its initial estimate of real GDP growth in the second quarter, and the headline is likely to look soft. At present, we're projecting an initial report of growth at a 1.8% annual rate.

If our projection holds true, we're sure pessimistic analysts and investors will latch onto the slowdown from the 3.1% growth rate for the first quarter, implying that we're back to slower Plow Horse growth for good. They will argue nothing has substantially changed since Trump took office, despite tax cuts and deregulation.

It's true that an annualized growth rate of 1.8% would be the slowest pace since the first quarter of 2017. But, as we will explain below, growth in the second quarter was likely held down temporarily by businesses returning to a more sustainable pace of inventory accumulation following the rapid pace of inventory building in the second half of 2018 and first quarter of this year. Excluding inventories – focusing on what economists call final sales – we estimate that real GDP grew at a 3.1% annual rate in Q2.

We also like to follow what we call "core GDP," which is real growth in personal consumption, business investment, and home building, combined. Core GDP looks like it grew at a 4.1% annual rate in the second quarter, the fastest pace in a year. In other words, while the economy may not be booming like the mid-1980s or late-1990s, the underlying trend remains quite healthy, and certainly much better than the Plow Horse period from mid-2009 through early 2017.

Here's how we get to our 1.8% real growth forecast for Q2:

Consumption: Automakers say car and light truck sales grew at a 2.8% annual rate in Q2 while "real" (inflation-adjusted) retail sales outside the auto sector grew at a 3.9% rate. Combined with some less up-to-date figures on consumer spending on services, real personal consumption (goods and services combined) looks to have grown at a 4.0% annual rate, contributing 2.7 points to the real GDP growth rate (4.0 times the consumption share of GDP, which is 68%, equals 2.7).

Business Investment: Reports on durable goods shipments and construction suggest all three components of business investment – equipment, commercial construction, and intellectual property – rose in the first quarter. A combined growth rate of 5.1% adds 0.7 points to real GDP growth. (5.1 times the 14% business investment share of GDP equals 0.7).