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Old 05-17-2018, 9:41 PM
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majoco majoco is offline
Join Date: Dec 2008
Location: New Zealand
Posts: 2,865

Looking at your local temperature and humidity is always interesting but more importantly from a forecasting viewpoint is the atmospheric pressure. You need it to be reasonably accurate so if you can get the actual pressure from an airport ATIS or even just phone the ground controller you can set your barometer to read the same. I have one that was liberated from an airport control tower so is pretty good, it moves with changes of less than 2mBar - yours will probably be calibrated in 'inches of water' - 29.92" is the same as 1013mBar - the "International Standard Pressure". One major warning - DON'T tap the glass! Tap the surrounding wood, metal or whatever. Some good YouTubes on how to understand what the baro is telling you, some unfortunately not so good.
Cheers - Martin ZL2MC - Palmerston North
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