There is a communication problem. Go directly to the Meteoalarm site : www.meteoalarm.eu and check the Weather-warnings there .
Thunder radar
Rain radar
No data was retrieved for https://query.yahooapis.com/v1/public/yql?q=select+%2A+from+weather.forecast+where+woeid%3D973505&format=xml&u=c
Weather-stationDavis Vantage Pro2 Plus
Weather-serverASUS WL-330N3G
Providerongekend.nl