The Highs and Lows Of Weather
WEATHER NERDS: I noticed something when I started looking at my weather data. The air pressure was changing in an odd way. As you know, barometric pressure changes when storms approach. Here in Hawaii we are in the middle of the pacific, close to the equator and our pressure does not change much unless there is a storm brewing. I was seeing a rhythmic wave twice a day. Take a look at my station and click the left button to go back day by day.
https://www.wunderground.com/personal-weather-station/dashboard?ID=KHICAPTA15#history/s20170831/e20170831/mdaily
There is a low at about 4am and 4pm and a high about 10am and 10 pm. Our pressure does not change all that much during the day, fro example 29.00 to 29.06 which isn’t much at all.
It seems some scientist also noticed this and wondered why. Here is their reasoning: https://www.sciencedaily.com/releases/2008/12/081203092437.htm