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On July 9, 2024, a severe thunderstorm will break out in the Benelux countries. Estofex issues a Lvl2. We can document the thunderstorms in Belgium and accompany them on their way to Germany. Report: Together with the storm hunters NRW, we set off early for southern Belgium in order to intercept the first developments from northern France in the early afternoon hours. At Mons (Belgium) we can observe an isolated supercell in its early stages at around 2:50 p.m. CEST before we accompany the cell further to Waterloo (Belgium). There we can document it a second time at the Lion's Hill (monument), whereupon the high-basic thunderstorm moves northeast over Brussels. We then move westwards where we can intercept a well-organized arc segment in the greater Brussels area at 5:45 p.m. CEST. A powerful shelf cloud passes over our location with heavy gusts of wind and heavy rain. We then move further east, where we can again position ourselves in front of the storm front. After the formation of a second well-defined shelf cloud, we let the system roll over us at 20:20 CEST near Liège (Belgium). On the way to the German-Belgian border, we again come under the gust front of the system. Broken branches and fallen trees block the road and temporarily impede traffic. The front stirs up large amounts of dust. At Ameln (North Rhine-Westphalia), we can document a powerful storm over the fields in the distance at around 21:15 CEST. We then continue south, where we approach the cells of the dragging thunderstorm front in the south at dusk. After the southern end of the thunderstorm line has rolled over us, we enjoy an impressive lightning show near Strassfeld (North Rhine-Westphalia) on the northern edge of the Eifel. Weather situation: A CAPE shear overlap of around 20 m/s DLS and 800-1500 J/kg MLCAPE, together with a very well-mixed boundary layer and inverted-V profiles, offers an explosive mixture for organized thunderstorms with the main hazard potential being severe gusts. Slightly cyclonic curved hodographs in advance of the sliding cold front favor the formation of a QLCS thunderstorm line as well as the formation of individual supercells.