Container traffic gives us an idea about the volume of goods being exported and imported - and usually some hints about the trade report since LA area ports handle about 40% of the nation's container port traffic.
The following graphs are for inbound and outbound traffic at the ports of Los Angeles and Long Beach in TEUs (TEUs: 20-foot equivalent units or 20-foot-long cargo container).
To remove the strong seasonal component for inbound traffic, the first graph shows the rolling 12 month average.
On a rolling 12 month basis, inbound traffic was up 0.5% compared to the rolling 12 months ending in October. Outbound traffic was up 1.1% compared to 12 months ending in October.
The downturn in exports last year was probably due to the slowdown in China and the stronger dollar. Now exports are picking up a little.
The 2nd graph is the monthly data (with a strong seasonal pattern for imports).
In general exports have started increasing, and imports have been gradually increasing.