meteoalarm.eu (the site) is SLOW
During a normal day has periods when it doesn't respond, periods when it is very slow and periods when it 'breaks the connection'. These cause a lot of problems to an integration in HA: polluted logs, sensors reporting bogus messages, ... unreliability. (A case of lack of resources?)
meteoalarm.eu has no API
There is no way of getting the relevant information from meteoalarm.eu in a systematic, controlled and efficient way. So the underlying 'driver' library that supports the integration, must do a miracle to present the information to HA in an ordered way. When the server doesn't respond the miracle cannot happen and so the logs report timeouts, exceptions, and other unpleasant things. C'est la vie!
meteoalarm.eu provides an IMPORTANT service
Despite all the shortcomings, it provides an important and very useful service. Paciency is needed, but most of the times it works.
There are other providers of this kind of information, however all take the information from meteoalarm.eu! So they 'are not better', they only get silent about the problems.
What you can do to help meteoalarm.eu?
First: Write to your European MP to give more funds to this project.
Second: The site was developed for EUMETNET, the Network of European Meteorological Services. The information is provided by the national weather agency of each participant country. There are some problems of meteoalarm.eu that are caused by these agencies lack of discipline, (e.g. is very frequent for one of these agencies to write messages like 'No Special Awareness Required. DANGER keep up to date with the latest weather forecast. BEWARE.' (all in the same message)!!! Other agency has many spelling errors in the name of his regions, ... ). So, if you found examples like these, please contact your agency and ask to correct them.
So, if you cannot cope with these problems, please don't install this component.