Check out the new Humboldt Bar Webcam.
From the NWS:
Conditions at the entrance to Humboldt Bay Harbor can now be checked online by going to http://www.weather.gov/eureka/marine and navigating to the new webcam made available through collaboration between the National Weather Service, the United States Coast Guard, and the Humboldt Bay Harbor, Conservation and Recreation District.
The Humboldt Bay Bar Cam is pointing towards the south jetty from the north jetty so it shows much of the entrance and bar channels. The images are ten seconds apart and are updated every ten minutes. It is important to remember that waves can be bigger than those captured on the Bar Cam, and that waves can suddenly get larger due to changes in tide and the arrival of larger sets of waves. Mariners are reminded that the Bar Cam is just one more piece of information for making navigation decisions and they should not rely on it solely to determine if the harbor entrance is safe to transit. Check for latest Bar conditions by calling the Coast Guard using your marine VHF radio on channel 22A.