Holly Shit. 
I wrote a long answer this morning but ... it looks like I made a mistake 
:-(

To be short - my main problem was because in the Weewx database wasn't a 
record of where the max speed was. I can see it on my console (66 km/h), 
but not in my database. 
I tried to correct this manually in the database, and now I have a new 
problem. 
It will be described in its own topic :-)

On Friday, 21 July 2023 at 12:23:41 UTC+2 Greg Troxel wrote:

> "kac...@gmail.com" <kac...@gmail.com> writes:
>
> > Vantage Vue sensors send data to its console. It works fine, I have data 
> > which are then used by Weewx and published on the website (every 15 
> > minutes). 
> > In the last weeks, we have had many storms here and electricity is down. 
> At 
> > that time, the Vantage Vue works with batteries. With WEE_DEVICE INFO I 
> can 
> > see the interval is set to 10 (minutes?). 
> > After the electricity comes, I use WEE_DEVICE DUMP to get all data into 
> the 
> > database. But while there was a really strong wind, the results are 
> > strange. Well, not strange, but it looks like there are only some 
> records 
> > there and the wind gust are far from real. 
> >
> > How do I get better results? The main problem is the wind. There are 
> gusts 
> > and after some seconds/minutes everything can be different.
> > Changing interval? I know this uses more memory ... 
>
> My understanding is that the standard approach for archive interval is 5
> minutes, but 10 minutes is also reasonable as you get twice the time
> interval that the computer can be down wihtout data loss. IMHO there is
> nothing wrong with 10. (But I am using 5 with a VP2.)
>
> You said website 15 minutes and archive interval 10. This doesn't make
> sense; weewx naturally generates reports every archive interval.
>
> The driver should fetch the archive records and put them in the database
> automatically. You should not have to run wee_device manually.
>
> Be very careful that you have time synchronization ok on your computer.
> <flame bait>If it's a toy computer like a PI :-) </> then make sure that
> you either have bought and installed a RTC module or that you have
> scripts to ensure that it has the correct time *before* you start weewx.
>
>
> You describe the data, but you didn't provide it or a link. Measuring
> wind seems tricky and it seems like quite a leap to conclude that the
> hardware must have measured what you expected and that the data
> processing and weewx is to blame.
>
> My wind sensor is too close to the house, and I don't worry about it.
> But I would expect that the archive record contains average wind for the
> interval and the max speed over the interval. So 10 vs 5 should only
> have less granular info, not miss gusts.
>

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