On Monday evening, a severe F2 tornado was observed in East Frisia. The houses suffered a lot of damage. Trees were felled and even a mobile home was taken away.
On rain radar, a strong thunder cell was visible slightly north of Aurich at 20:10, the tornado originated mainly near Grossheide in the Aurich region. The supercell moved from the northwest (i.e., from the North Sea) to land. The reflection pattern on the crescent-shaped radar was already striking. Therefore, the rotation was already noticeable there. It is a "low top" supercell that has evolved with relatively little energy available (only cool North Atlantic air, no humid, hot, and energetic air), but with very large wind shear.
The tornado was also visible on Doppler radar. Where green and red meet. Very close to each other, high wind speeds are visible far from the location of the radar on Borkum and directly next to it towards it. This shows the rotation! Strong rotation with a large radius up to an altitude of about 3 km was observed here.
The Doppler speed radar image from 20:10 was supposed to be near Grossheide around the time the tornado hit. This place is located just 3 kilometers north of Berumerfehn (Großheide).