Barometer, jagged graph

Jorgen_Lundberg over 3 years ago

What's causing this weird looking pressure graph? I didn't change location and it goes further back than this.

FW 19.74...I kind of suspect this, but I dunno.

Ideas?

0 MULK over 3 years ago

Same behaviour for me on 19.74

0 Jorgen_Lundberg over 3 years ago in reply to MULK

OK, then at least there's two of us, in this misery . Let's hope for a fix soon.

0 Dr Phil over 3 years ago in reply to Jorgen_Lundberg

Since you’re on beta software you need to contact Garmin as directed. You could also load 19.75b and see if that makes any difference.

0 AndersB over 3 years ago

Same for me. Also noticed that the altimeter gone mad and showd a couple of hundreds meters to high altitude. The graph is from 19.74 BETA so i dont know if the same problem exists in 19.75 BETA.

0 Jorgen_Lundberg over 3 years ago in reply to AndersB

OK, installing 19.75b now - hopefully the remedy required,

0 2659339 over 3 years ago

I believe it's a 19.74 behavior caused by the baro automatic calibration at night turned on.

0 subra over 3 years ago

Jorgen_Lundberg said:
What's causing this weird looking pressure graph?

The weather.

I guess you guys live in europe and there were some stormy days and the pressure has droped accordingly as can be seen here

https://www.metoffice.gov.uk/weather/maps-and-charts/surface-pressure

0 hobbycyclist over 3 years ago in reply to subra

I observed the same behaviour last thursday (storm over central europe), the pressure increase in the graph was definitely triggered by the passing of the cold front when atmospheric pressure dropped by a few mbar within minutes, probably fluctuating quite a bit in that time. No surprise that the fenix attributed the quick pressure changes to altitude changes instead of weather: I "climbed" 180 m up (while I was sound asleep).

I'm also on the current beta (19.74 in the screenshot, now 19.75), but I did (and do) not consider this a beta problem but a general, probably unresolvable issue of the auto baro-/altimeter mode in such extreme weather conditions.

0 Dr Phil over 3 years ago in reply to hobbycyclist

I have similar on my F6 but I did move inland and up from sea level to ~400m. My thinking to is that this shows the barometer correcting itself but could of course be proved wrong. I'm waiting to see if similar occurs when I return to sea level on Tuesday.

0 9058036 over 3 years ago

Sometimes if you sink the watch in the water or just by washing your hands it can affect the barometer.

To make sure that is not something caused by the user just leave the watch on a table for 48 hours and see what will happen