Source: U.S. Bureau of Economic Analysis  

Release: Gross Domestic Product  

Units:  Billions of Chained 2017 Dollars, Seasonally Adjusted Annual Rate

Frequency:  Quarterly

BEA Account Code: A191RX

Real gross domestic product is the inflation adjusted value of the goods and services produced by labor and property located in the United States.For more information see the Guide to the National Income and Product Accounts of the United States (NIPA). For more information, please visit the Bureau of Economic Analysis.

Source: Federal Reserve Bank of Atlanta  

Release: GDPNow  

Units:  Percent Change at Annual Rate, Seasonally Adjusted Annual Rate

Frequency:  Quarterly

GDPNow is a nowcasting model for gross domestic product (GDP) growth that synthesizes the bridge equation approach relating GDP subcomponents to monthly source data with factor model and Bayesian vector autoregression approaches. The GDPNow model forecasts GDP growth by aggregating 13 subcomponents that make up GDP with the chain-weighting methodology used by the US Bureau of Economic Analysis.

The Federal Reserve Bank of Atlanta's GDPNow release complements the quarterly GDP release from the Bureau of Economic Analysis (BEA). The Atlanta Fed recalculates and updates their GDPNow forecasts (called "nowcasts") throughout the quarter as new data are released, up until the BEA releases its "advance estimate" of GDP for that quarter. The St. Louis Fed constructs a quarterly time series for this dataset, in which both historical and current observations values are combined. In general, the most-current observation is revised multiple times throughout the quarter. The final forecasted value (before the BEA's release of the advance estimate of GDP) is the static, historical value for that quarter.

For futher information visit the Federal Reserve Bank of Atlanta.