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An interest rate challenge for everyone! Probably quite a lot of people now have time. Dig your great storm images from times gone by and put them on Sky Watch! They have scientific value so that we can find all the toughest cases in one place.
Summer 2010 is known among storm enthusiasts as that last "The Summer." Four intense weather days in a week was something quite unique. Personally, on the morning of August 8, 2010, I was describing the destruction of previous severe weather (August 4 and August 7) in Ruovesi. Substantial amounts of forest had fallen. The weather patterns also showed opportunities for very strong thunderstorms that Sunday. There was a strong plug in western Finland, but if the plug broke, there would be known fast-growing and intensifying thunderstorms.
On the west coast earlier in the day there were e.g. Thunder damage caused by Sonisphere. In addition, the thunderstorm system that rose from the Baltics on the same day with its avalanche clouds is certainly familiar to almost everyone. My own "set" on that day was the breaking of a plug in the interior of Western Finland.
After 4 pm, it started to happen around Sastamala. In 5-10 minutes, a weather radar exploded, which eventually progressed over the western and northern parts of Pirkanmaa towards the northeast, forming a large thunderstorm system. In the beginning, it was a supercell thunderstorm, which is rarely clearly confirmed in Finland on the basis of data and destruction. At first I left Ylöjärvi towards Hämeenkyrö, where the first picture was taken. The growl was quite continuous, but no lightning was visible. As this was a cloud that rarely rose high in Finnish conditions, it was rumbling, mostly non-stop from the top of the cloud.
The problem in this case myself was the supercell pathway. Hämeenkyrö was actually the only place where it was possible to avoid the forest and even find some kind of Shooting Location. When about 2 cm of granules started to bump into the car glass, I had to try to head north towards the cloud. However, this was a hopeless solution because there was only forest and woods in that area. I finally decided to give up and let the cloud go north.
Slightly further north of Kuru, information began to appear that the granules had been exceptionally large. I collaborated with the Finnish Meteorological Institute to look at the granules in the area of a farm. The official size was 8 cm, but the house had measured the 9 cm grain before the granules were spun in people's hands. To this day, this hail incident is still at the forefront in Finland.