
© Zoé Wallendorf
There is a disagreement among weather experts in Luxembourg regarding the classification of a suspected tornado on 29 June, with the European Severe Weather Database designating the event as severe winds.
Our colleague at RTL looked into this year's weather events that have been speculated to be tornadoes.
However, there seems to be disagreements between experts on what happened on 29 June.
Earlier that year, on 30 May, another tornado was spotted in Essingen, near Mersch.
Philippe Ernzer, weather expert at Meteo Boulaide, is convinced that both events were tornadoes. He cites the rapid rotation on radar images as well as photographs by witnesses as clear evidence that the weather condition on 30 May near Mersch was indeed a tornado. An opinion that is shared by Meteolux.
The same applies to the events on 29 June in Bissen: analyses show that the wind collided from several directions within a limited area. Objects flew across different directions, and the grass patches showed tornado-type patterns afterwards.
However, here Meteolux disagrees, arguing that the evidence in this case is not sufficient to clearly classify 29 June as a tornado.
The third perspective from the European Severe Weather Database (ESWB) initially classified the weather event of 29 June as 'severe wind'. However, last week, they updated their assessment to 'tornado,' only to revise it once more, reverting to the original classification of severe winds.
"Various people still believe that it was just a case of severe wind. In my eyes, that's not what happened; I was the only person on site who investigated everything in detail and also wrote a comprehensive analysis. That's why there are such differences of opinion now."
Philippe Ernzer argues that it is important to maintain statistics in order to investigate the weather behaviour in the country.
The issue is that the potential tornado occurred late in the evening after dark, leaving little visibility. Consequently, observers had to rely entirely on radar images.