What's going on with the Live Weather?

This topic has been left open for general discussion of the issue, but there is now a bug reporting thread that should be used for reports on replication/testing

I’m not sure what’s happened there, the latest replies in the bug reporting forum seem to have gone? Or they seem to have moved into this thread now

I mistakenly merged the two threads, have undone that and posted an explanation above. Sorry for the confusion

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Ahh I see, that must be why. No worries, thank you :slight_smile:

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I was experiencing very slow weather injection at KDEN last week. The sim would start with sunny skies without any clouds. Then after 10 or 15 minutes the clouds would start to populize. For me it was just this airport and the weather loaded very slowly. In the past KDEN was totally messed up and the clouds would never load. But that hasn’t happened in a while.

Some additional samples I took, and while not always great, I’d consider the weather depiction in those instances as reasonable.




I wonder if the weather situation in the UK with sporadic thunderstorms and intermittent blue skies is generally hard to simulate for the system.
Metar reports with their half-hour validity certainly reach their limits in such conditions.
We don’t know where the system draws the data for the cloud placement, but maybe it struggles to emulate the generally instable weather conditions, and that leads to be hit or miss. Add to that the general weaknesses like mostly single cloud layers only or weak CB depiction,and you get what I’ve seen in my samples.
However, I won’t rule out occasional server issues.

I think after the several hours of testing I’ve done today there is definitely some underlying issue with the data being injected. I sat at one airport for an hour where the clouds disappeared and reappeared several times, sometimes instantly.

It’s doing the same again today at around 1500z as we saw yesterday where it is particularly bad again, such as clear skies when should be overcast etc.

Definitely a data bug

I don’t doubt that, as my experience at EGGP yesterday was similar to yours: first nearly clear skies, and only after more than 10 minutes it was more in line with the general weather situation in the UK.
However, I have an additional thought: maybe by observing these anomalies we are encountering an underlying condition with live weather after SU7.
As we were never told how the actual system works, my thoughts are that they had to divert from a global injection system to a more close-knit one, meaning that they probably have to inject METAR-influenced*** data into smaller grid units more often, and thus producing non-plausible weather depiction every now and then on a local scale.
Just guesswork, but unfortunately that’s what they’ve left us with for the past years.

***we know the clouds aren’t derived directly from the METAR report, but according to my observation they are placed pretty close to actual satellite imagery

It reminds me of a similar issue we had back when it first released, where when it got to around 1700z in the evening, it would load in weather for 0500z the next morning and was skipping a whole 12 hours’ worth of data.

Can’t confirm if it’s the same or even a similar issue, but there’s certainly some bug with the data injection which gets particularly worse around 15-1600z

Yep, I remember that one pretty well. Took some time to get the dev’s attention, but in the end


Back then though the community managers were much more receptive to feedback, I remember one of them who is no longer a community manager went back and fourth through direct message with me for a couple of days to feed everything back to the devs and fix that one. No such luck anymore sadly.

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Yeah, trying to pinpoint a potential bug in real time within the confines of today’s forum regulations, meaning not being able to discuss findings in a bug-report thread as they are posted, is very non-constructive imho. And switching between the bug-report and this thread would be ridiculous. Sad development!

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Well I’ve confirmed it’s a bug, can see it in action the clouds being cleared when they shouldn’t be:

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I like the fact that FS has live weather but why do the clouds look the same no matter where you are in the world?

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Great find. Unfortunately it doesn’t look like a server related issue, as the clouds don’t disappear instantly but seem to fade out. This would back up my assumption that what we are encountering has to do with how the cloud injection works.
It would be interesting to observe from very high above.
I call it unfortunate, because a server issue would most probably have a higher possibilty of being fixed than an insufficiency in the weather simulation itself.

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Just had this issue today for the first time.

Landed in EIDW with cloudy and rainy weather and this was the situation on final for 28L and on the ground. Clearly wrong, should be much more overcast.


This picture was taken after around 40 minutes on the ground. Clouds disappeared completely: weird

On top of that, clouds appeared after some time during cruise but winds aloft were completely wrond as well around EIDW area

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Did just a 1 hour flight in the alps around mount blanc, took 10 min for the clear sky made place for clouds and light rain. after some time, clear sky back and 5 min later clouds back, no fade in and out but suddenly.

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Thanks for also sharing your experience, you can vote and place a bug report here which would help: Live weather data injection bug - September 2024 (not general accuracy) - #50 by utd4life12

Thanks :slight_smile: