Atlanta Fed GDPNow.

In their words:

The GDPNow model estimate for real GDP growth (seasonally adjusted annual rate) in the second quarter of 2019 is 1.6 percent on May 9, down from 1.7 percent on May 3. After this morning's Producer Price Index release from the U.S. Bureau of Labor Statistics, and this morning's wholesale trade report from the U.S. Census Bureau, the nowcast of the contribution of inventory investment to second-quarter real GDP growth decreased from -1.02 percentage points to -1.12 percentage points.
The next GDPNow update is Wednesday, May 15. Please see the "Release Dates" tab below for a list of upcoming releases.
Atlanta Fed GDPNow.