The Norwegian Meteorological Institute has issued a warning about heavy rainfall in Eastern Norway and parts of Trøndelag. It will be worst in the interior, where crisis staff have been set up. Here, up to 80 millimeters of rain can fall in 24 hours. In the north, summer is in full swing, and Nordland can record its first tropical night in September since 1938. – Sensational It is far from historic, according to climate researcher Hans Olav Hygen at the Meteorological Institute. – We have gone back in time and found that there may have been a tropical night in Nordland once before. It was in Grøtøy in Steigen in 1938. But there we have to make a small caveat. If that measurement is not correct, we have no previous registrations. – But in any case, it is the warmest September night in Nordland in almost 100 years. It is sensational, says Hygen. View over Alderssundet in Lurøy in the evening sun. Photo: Silvana Nickol At the measuring station in Brønnøysund, 20.2 degrees were measured on the night of Monday, while it was 20.3 degrees in Lurøy. On Sunndalsøra in Møre and Romsdal it was exactly 20 degrees, and tropical night there too. Why is it so hot? On-duty meteorologist Iselin Skjervagen at the Meteorological Institute explains why it is so hot. – A large high pressure over Russia brings with it a river of warm air masses from the south. The heat is thrown up through Sweden and towards us. That is why it has been possible to get tropical night. Summer scene in September in Kaldstad, Hamarøy. Photo: Siv Idunnsdatter Skoglund / Leserbilde High temperatures in the sea also help, according to the meteorologist. – A warm sea in late summer means that the temperatures in the air do not drop as much. That is why it is best along the coast that we see tropical nights this late in the year. Inland, there is no sea that can act as a hot water bottle at night. The summer heat continues on Monday with temperatures up to 25 degrees. – One should not ignore the fact that it could be a tropical night tonight as well. I think that is probably quite likely, says Skjervagen. We are well into the first autumn month of the year, you wouldn’t believe that when you see this temperature overview. Photo: Meteorological Institute The heat records are lined up Climate researcher Hans Olav Hygen says that the climate department at the Meteorological Institute is working hard to check out all the weather records that have been set so far in September. Last week, Western Norway experienced shocking heat, and there is also a heat wave in the sea that is sending temperatures to new heights. – There will be more records. I just spoke to someone who is responsible for our services. He had partially reprogrammed that page to get a better overview. – It is very special that there are tropical nights in September and as far north as Nordland, says Hans Olav Kvaal Hygen, who is head of climate services at the Meteorological Institute. Photo: Anders Ekanger Should we be worried? Hygen does not hide the fact that the weather records in September are unusual. At the same time, all the heat records give cause for concern. – Although it has been lovely with a proper summer in the north and a good finish, there is a small red flag waving in the background. It is global climate change. Nevertheless, he is clear that it is permissible to enjoy a great summer. – Enjoy the summer, enjoy the few days when it is really good in Norway. At the same time, it must be allowed to have two thoughts in your head at the same time. Because climate change is not only about heat records, but also about rainfall records. Flooding after floods and torrential rain in Bø in Telemark on 4 September this year. Photo: Philip Hofgaard / news – When we research climate models, there are mainly two things we concentrate on: heat and precipitation. The climate is warming, leading to various forms of extreme weather phenomena, including both tropical nights and precipitation. – When it comes to rainfall, we see that it is increasing overall all over the world, says Hygen. – But in addition, we see that the land area that is hit by the rain is decreasing. In other words, the rain is getting heavier and more brutal. This also applies on a Norwegian scale. From Tuesday morning, locally strong gusts of 25-27 meters per second are expected in Nordland and Troms from the southeast. The wind will increase first in the interior of Nordland, and decrease last in the interior of Troms Photo: Meteorological Institute Still not “Indian summer” On Sunday, all counties on the mainland had temperatures of over 20 degrees – in other words, what meteorologists call a Nordic summer day. The warmest was Åndalsnes at 26.9 degrees, with Mo i Rana second warmest at 26.2 degrees. Just below the list was Setså in Saltdal with 25.8 degrees and Bodø with 24.6 degrees. – Is this what you call Indian summer? – Indian summer is a somewhat difficult definition. We usually say that it must have been almost freezing before we can call it that. I would rather say that it has been a long summer, says meteorologist Sigrid Auganæs. The reason is that, although the temperature has dropped in the north, it has not been very much colder than about 15 degrees so far this autumn. – These are not very common temperatures. In Northern Norway it has been a very hot September, says the meteorologist. Tromsø has had four summer days so far in September. The record before this year was two days. It has only happened twice before. Published 09/09/2024, at 13.49
ttn-69
– Sensational – news Nordland
