Author Topic: Temperature Spikes Ambient Weather WS-1400  (Read 327 times)

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Offline ronmis

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Temperature Spikes Ambient Weather WS-1400
« on: September 04, 2017, 04:14:02 PM »

My OberverIP sends data to Wunderground and Ambient weather and Meteobridge sends data to PWS and CWOP.

For the last one week I've been seeing strange temperature spikes throughout the day on pws and cwop and not on wunderground and ambient weather.

Example - https://www.pwsweather.com/archivewx.php?id=FW0942&d=20170903&t=

Any of y'all noticing something similar? I'm guessing Meteobridge is causing this issue.

Thank you,
Ron

Offline dupreezd

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #1 on: September 04, 2017, 08:40:34 PM »
Yes, I had the same on Saturday. I cleared all the max reading in the Meteobridge, but the were back after awhile. I reboot of the Meteobridge cured the problem. Not sure what the problem was.
WS-1200-IP | ObserverIP | Meteobridge 3.4
WU, PWSWeather - KTXCONRO61
CWOP - fw0717

Offline dolfs

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #2 on: September 05, 2017, 12:07:57 AM »
What firmware version on your ObserverIP, and which version on MeteoBrdige?

Note that the "spike" values are equal to the values expected without the spike, but then subjected to the formula for conversion from C to F. For example expected temp at first spike is 76.7F, converted to 9*76.7/5+32= 170.6, and the recorded value is 170.2 (which corresponds to a temp of 5*(170.2 - 32)/9 = 76.77.

So, at spike times, MB applies the conversion for C>F even though it should not. I am going to make an educated guess that you do not see the problem on wunderground or ambient weather is because you upload to those directly from the ObserverIP.

When MB reads data from ObserverIP it reads the value from the Live Data page, and reads the units in use from the "Station Settings" page. If, for some reason, it gets confused about the units being C rather then F, it will apply this unwanted formula. One way this can happen is if you change the units for the ObserverIP from F to C, the MB sees the new units right away, but the Live Data page on the ObserverIP lags behind, making it possible for the MB to see F values with C units, thus applying the conversion (when you don't want it to). This scenario has been reported to Ambient and Fine Offset.

Even if  you are uploading to wunderground or ambient through the MB they might not see it because they "sample" your uploads every 5 minutes. If the peak does not coincide with the exact sample they take, they won't see it.

I doubt, however, this is what is happening based on the timing of your spikes. Knowing your firmware versions may help figure this out.
--dolf

Ambient WS-1400-IP + MeteoBridge

Offline dupreezd

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #3 on: September 05, 2017, 08:29:25 AM »
@Dolfs,
Quote
Note that the "spike" values are equal to the values expected without the spike, but then subjected to the formula for conversion from C to F. For example expected temp at first spike is 76.7F, converted to 9*76.7/5+32= 170.6, and the recorded value is 170.2 (which corresponds to a temp of 5*(170.2 - 32)/9 = 76.77.
Yes, you are spot on with your calculated values.
I am on the latest version of Meteobridge via auto update.
Yes, I am only doing WU updates via the OIP and I did not make any changes.
I am running HomeWeatherStation and noticed the spikes on the daily graphs.
Had me really confused, but rebooting the Meteobridge solved the problem.
WS-1200-IP | ObserverIP | Meteobridge 3.4
WU, PWSWeather - KTXCONRO61
CWOP - fw0717

Offline ronmis

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #4 on: September 05, 2017, 11:14:14 AM »
What firmware version on your ObserverIP, and which version on MeteoBrdige?

I'm on the latest Obverver IP (4.2.1) and Meteobridge (3.4 (Aug 17 2017, build 11382), FW 1.4) Firmware

I noticed these spikes from August 30th onwards and not from Aug 17th when I updated Meteobridge.

I've erased Meteobridge's Historical data and rebooted it but to no avail.

Even if  you are uploading to wunderground or ambient through the MB they might not see it because they "sample" your uploads every 5 minutes. If the peak does not coincide with the exact sample they take, they won't see it.

I see spikes in CWOP and PWS which get their data from meteobridge every 5 minutes

Offline dupreezd

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #5 on: September 05, 2017, 11:46:56 AM »
Here is a graph of mine. First spike August 31 @ 6:07pm CDT

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WS-1200-IP | ObserverIP | Meteobridge 3.4
WU, PWSWeather - KTXCONRO61
CWOP - fw0717

Offline ronmis

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #6 on: September 11, 2017, 01:53:53 PM »
as of today, the temperature has spiked and not come back to normal, i'm not even sure whats going on. But can attribute this to meteobridge

https://www.pwsweather.com/obs/FW0942.html

Offline ronmis

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #7 on: September 13, 2017, 06:35:46 PM »
I rebooted both the ObserverIP and Meteobridge and that seems to have resolved the issue. No spikes in the last two days.

Offline dolfs

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Re: Temperature Spikes Ambient Weather WS-1400
« Reply #8 on: September 13, 2017, 07:18:00 PM »
These situations are always highly annoying because you still don't know the cause and therefore cannot trust that it won't happen again. Two days without is good, but I think not long enough to feel at ease.
--dolf

Ambient WS-1400-IP + MeteoBridge

 

anything