Arcus cloud, Raseborg

The thunder front approached from the southeast. At first there was a rumble that approached and intensified. The sky turned dark blue and a dark area approached. The radar showed a lightning-striking front crossing the Gulf of Finland, which intensified at super speed after reaching the sun-scorched land mass of Western Uusimaa.

The edge of the cloud began to appear behind the trees, and it rolled straight over. It saw that the point would become a big gust of wind, and with it a downpour.

I warned market vendors and then the audience as I jogged past that the storm was just coming on, now sheltered, but in the hot heat, many couldn’t quite believe it when “the sun was shining so beautifully”.

The market audience was blissfully ignorant of the "tsunami" of the atmosphere. If anyone looked at the sky, they did not recognize the avalanche and its bringings.

A minute later, a gust of fire came and grabbed the fabric of the tents that were upright against the direction of the wind. Immediately afterwards, pouring rain began. The water came flooding and the visibility was only 10-20 meters disappearing into the white wall. There were immediately melting small granules in the water, which probably caused that visibility to decline.

In the dryness of the car itself, it was wild to watch the small children being carried and ran through the heavy whipping rain into the parking lot. Couldn't help it either, by the time I got to the parking lot, everyone was already soaked. Fortunately, the lightning strikes did not hit the running gang but only the nearby terrain.

Identifying an avalanche would have helped many protect themselves in a timely manner.

This description has been automatically translated from Finnish. Click here to see the original text.

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Arcus cloud - 20.7.2014 at 13.01 Raseborg Observation number 27841