Skywarn Europe is a network of volunteer storm spotters throughout Europe based on the U.S. Skywarn program (a similar program, Canwarn operates in Canada).
Its members attend severe weather training courses and deliver real-time observations of current weather conditions that may be used to warn the public.
Its postings may afterwards be entered into databases to evaluate meteorologists' forecasts.
[1] The organization has autonomous branches in Germany, Austria, Switzerland, France, Slovenia, Netherlands, Czech Republic, Slovakia, Poland, and the United Kingdom.
[2]