Tuesday 28 October 2008

Storm "Ulrik" (Snowfalls will come later...) (photos)

After another cyclone causing problems in Norway with severe winds, the weather this week will be slightly better, but also colder...

However, I will see no snowflakes as I hoped... GFS's last runs show the temperature for this week much higher now, than it did some days ago. Max temperature will be around at 6-7oC and min may fall under 0oC if the nights will be cloudless. And this will probably happen, since the only rainy days will be Wednesday and Thursday, but the precipitation will not be as much as it was forecasted last week. After that, a High pressure will cover the Scandinavian area.

But the place where the precipitation will be quite much, is Middle and Northern Norway, because a polar Low will come and give some snowfalls and strong winds the following days.

Saturday afternoon, clouds started covering the sky and suddenly it got very windy.

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The clouds were getting steady darker making the sea looking black. Severe winds continued making loud noises whole night and it stopped no sooner than Sunday early morning. The wind rate was around 30m/s and in Western Norway, where the storm was even worse, the wind gusts reached even hurricane level! The meteorological institute came out with an extreme weather-warning on TV and gave the cyclone the name "Ulrik". The interest thing is that the Low's shape looks much like with the hurricane that stroke Norway in 1992!
http://www.yr.no/nyheter/1.6280892

And after the storm, the sun was shining and Cumulonimbus appeared again over the sea on Sunday and Monday 26&27/10.

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No electrical phenomena again, but 2 showers came to Arendal Monday afternoon. It was two Cumulonimbus, that were about to disappear, so their dissolving caused the rainfalls and there were lots of virga to see.

As you can see in Monday's satellite picture below, Arendal in South Norway is not in an beneficial position in the case of Cumulonimbus... Thunderstorms come from Atlantic ocean striking Western Norway, but not the Southern areas, because they get "stuck" in the mountains, so the only exit for the Cumulonimbus clouds is the sea between Norway and Denmark...

And in the summer thunderstorms form usually in the mainland and not in the sea...

So... when do thunderstorms appear in the coastline? It's many years since the last time I had experienced a severe thunderstorm in Arendal... There was only 2-3 weak thunderstorms here this year with few rumbles. And not at night, so there was no lightning to see...

27-10-08

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