Re: Barometric Pressure Calibration

The hub readings are coming from Acurite (myacurite.com dashboard), and it's constantly open here on my desk. The console is sitting here, too. I'm not going to chase these readings all over the place, but I'd like to get them fairly sync'ed before relying on them altogether. I guess I'll be happy with what I have now.

What I would like to do is get an analog barometer, and check it against the hub. I do have a pretty good idea of my station altitude from my GPS, so I'd like to know how accurate the hub is now. Other than that, I guess with this station, it's more for my personal enjoyment than as some reporting facility for NWS.  Next, I have to find out the best wifi camera for my weather cam.

Does your GPS have a barometric altimeter? It is my understanding that the the GPS altimeters based on satellite reception (like automotive navigators) are notoriously inaccurate and can fluctuate by 50' or more. And even the barometric altimeters (like on Garmin Oregon series) need to be calibrated regularly. I used a topo map to determine the elevation of my property. By overlaying the street map on the topo I was able to get a pretty accurate estimate (within 5') at the street. The topo lines were in 10' increments, so I could interpolate to get the elevation estimate of my street, then use that to estimate the elevation of each floor in my house. I actually use that elevation to calibrate the altimeter/barometer on my Garmin Oregon 550.