A tornado may have hit the Walloon city of Bouillon in the province of Luxembourg last Thursday (June 22). That writes RMI scientist Maarten Reyniers on Twitter. Radar images show damage in a forest in Menuchenet, near Bouillon. The Walloon government has already counted hundreds of fallen or uprooted trees.
Last week there was a strong thunderstorm in several places in our country. This is also the case in Luxembourg, where the code orange has been declared. There could also have been a tornado there, as it is now said. It is an extraordinary weather phenomenon – especially in our regions. “In Europe, these ideal conditions for the formation of supercells (severe thunderstorms) and tornadoes are much less present than, for example, in the United States,” explains our science expert Martijn Peters.
“Here the number is five times lower at about 250 tornadoes per year. In the past decade, most summer tornadoes have occurred in an area between France and Poland. That is why we see around three to five animals in Belgium every year at this time of the year. In autumn, tornadoes are mainly seen in southern Europe.”
Also, they are less powerful here in Europe than on the other side of the Atlantic. “Of the almost 4,000 units from the last ten years, thirty had a wind speed of 250 kilometers per hour or more.”
What is a tornado?
Such a tornado is “a column of air that connects the base of a cloud to the ground and rotates at tremendous speed,” says Martijn. “It usually occurs with the most severe type of thunderstorm: the supercell. Less than twenty percent of the time it is a non-supercell tornado.” Only 1 in 1,000 thunderstorms will develop into a supercell. “Barely a fifth of these become a tornado,” the saying goes.
Maarten Reyniers went into the forest where the tornado happened and snapped some pictures, which he later shared via Twitter.
Source : HLN