Post by NOAA: National Oceanic & Atmospheric Administration

The tidal level records at the Honolulu geophysical observatory were really on a roll in the 60s! This bank of recording instruments recorded coastal water level observations at remote sites throughout Pacific Basin on large rolls of paper. They were part of the U.S. Tsunami Warning System, which NOAA and its predecessors have been running for more than 50 years. Today NOAA has much more advanced recording and analysis tools to monitor for tsunamis and the earthquakes and other phenomena that cause them so that we can provide timely and accurate tsunami messages, but these old analog recorders did their job admirably in their time. Catch up with the NOAAstalgia series at https://lnkd.in/eDrN4JvV. (Credit: NOAA)