Hurricane Harvey caused "broad disruptions" to economic activity in the US Gulf Coast region, causing gasoline shortages and spiking freight costs, the Federal Reserve said Wednesday.

However, it was still too soon to measure the full extent of the impact caused by the storm, according to a periodic Fed survey on economic conditions. 

More broadly, the US economy continued to grow at "a modest to moderate pace" during July and August, with tight labor markets but disappointing auto sales, the survey showed