They (meteoalarm.org) changed the basic URL to get country alerts. Thanks to @pwsdashboard (Wim) for the heads-up and simple URL change. I’ve also increased the timeout to 30 seconds given the slowness of the meteoalarm.org site.
Now available on the update tool, the script page and the github distribution.
For some reason, loading wxadvisory.php?force=1 (to reload the cache) doesn’t complete loading the page. It only shows
<!-- get-meteoalarm-warning-inc.php - V3.16 - 08-Mar-2023 -->
<!-- using minAlertLevel=2 for 'Yellow' or more severe alerts to display -->
<!-- meteoalarm-geocode-aliases.php included -->
<!-- meteoalarm-codenames.json loaded -->
then stops (with a continuing to load indication in the browser). That’s likely a curl failure (and curl timeout failure) trying to get the JSON for the alerts from meteoalarm.org.
Just viewing wxadvisory.php itself shows
<!-- get-meteoalarm-warning-inc.php - V3.16 - 08-Mar-2023 -->
<!-- using minAlertLevel=2 for 'Yellow' or more severe alerts to display -->
<!-- meteoalarm-geocode-aliases.php included -->
<!-- meteoalarm-codenames.json loaded -->
<!-- CountryWarnings:
array (
) -->
<!-- get-meteoalarm-warning-inc: saved details to ./cache/meteoalarm-details.html file -->
<!-- get-meteoalarm-warning-inc: saved summary to ./cache/meteoalarm-summary.html file -->
<!-- get-meteoalarm-warning-inc: begin ./cache/meteoalarm-details.html -->
<div align="center" class="advisoryBox" style="background-color: #29d660; width: 800px;margin: 0 auto !important;">
<!-- Fetch Status:
Loaded warning data from './cache/meteoalarm.arr'. Updated:10/03/2023 17:35
-->
Er zijn momenteel geen weerwaarschuwingen voor: "Zuid-Holland (NL009); Hoek van Holland (NL802)".
</div><!-- get-meteoalarm-warning-inc: end ./cache/meteoalarm-details.html -->