From NWS
As Hurricane Lane passed over NOAA buoy 51002 earlier this evening, it was a chance to see direct observations of an eyewall passing over a specific point. You can see the pressure and wind minima occur as the eye itself passes overhead.
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This is a rare timeline. A hurricane passing over a fixed weather station, situated far from any land and shallow water disturbance.
Thank you, Buoy 51002, you went through hell, unharmed!
For a short time, the Buoy 51002’s homepage will show the other measured values in detail. Then the data will move to the historic section with another URL.
Maybe NOAA will produce an ex-post analysis of this.
https://www.ndbc.noaa.gov/station_page.php?station=51002
Click on the symbols above the column headers to see a 5-day diagram of the chosen column.
That’s pretty cool. I’m sure we will be repairing that buoy eventually.
My best to everyone there right now. This is a slow moving system and it’s dumping tons of rain.
Brave NOAA Buoy 51002 survived Lane and now can go back to recording pressure fluctuations due to atmospheric tides as it was before Lane passed. The fluctuations can seen in the graph of pressure in the OP.
It’s the wavy green line at the top of the graph before the passage of Lane.
Article about atmospheric tides in Ocean Navigator here: Tides in the atmosphere
Because the atmosphere behaves like a fluid, there is the potential for tidal waves to exist there as well. While the tides in the ocean are quite noticeable to anyone who spends any time on or near the water, the atmospheric tides are not as noticeable to most folks unless one is paying very close attention to winds or to a barometer or barograph. The forcing mechanism for tides in the atmosphere is different than that of the ocean as well.
It doesn’t require paying close attention if you were the guy who changed the barograph paper every four days when the ship is in the tropics.