an atmospheric river threatens to await us the end of this week

A last Sunday for water. This is what awaits many areas of the Peninsula, according to experts’ predictions. The reason is on the arrival of a storm and an associated atmospheric river, a couple that has crossed the Atlantic to bring us the tropical moisture of the Caribbean to the doors of Europe. The return of the rain. Meteorological models advance the arrival of an atmospheric river to the western coast of the Peninsula. The forecasts of Meteored They point out that the arrival would occur between the last hours of Saturday and the beginning of Sunday. The river will come accompanied by a storm That, although it moves in higher latitudes, it will leave its mark on our meteorology due to the arrival of an associated front. An atmospheric river. But what exactly is this of the Atmospheric River? Atmospheric rivers, or moisture rivers, are meteorological structures that are characterized by covering elongated extensions in low troposphereloading them with moisture that is dragged between humid tropical areas and subrtropical latitudes. This implies that these events are of great route, both in space and in time: this humidity can travel thousands of kilometers over several days. Atmospheric rivers not only occur between the American tropics and Europe: a phenomenon like this He is also recurringfor example, in the Eastern Pacific, and is responsible for carrying rainfall from the center of the ocean to the west coast of North America. A current in intense jet. The arrival of these transoceanic events is driven by a strengthened stream current. This fortune of atmospheric current facilitates the transit of this type of phenomena throughout the Atlantic Ocean, bringing them direct to our neighborhoods. The calm before the storm. Until then, the forecasts indicate that rainfall will remain in the east of the peninsula, and that we could even see a rebound in the temperatures associated with the proximity of The storm and his associated front. The forecasts of the State Meteorology Agency (Aemet) also talk about the passage of the Atlantic Front during the last day of the week, with “rainfall in the northwest third that, less likely, can be accompanied by storms and can affect the rest of the northwest half.” Uncertainty, for now. We will have to wait to know how the passage of this front will evolve. The predictions of the European Center for Middle Term weather forecasts (ECMWF) They point that the rains could be maintained in some areas of the Peninsula, especially in the northern third. Aemet monthly predictions indicate A somewhat more humid week than usual in some isolated areas of the country, something that could be reversed in the middle of September. In Xataka | Google has demonstrated with its AI that the prediction of storms and hurricanes is outdated. This is how your new model works Image | ECMWF

The good news is that Aemet already knows when the Jana Borrasca will leave. The bad is that 10 more days of rain await us

As of today, Monday, the BORRASCA JANA It will lose strength. But that does not mean that Aemet Go withdraw your notices by rains in half a country. And it is that the high -impact formation will continue with us generating instability, cloudy skies and generalized rainfall. Although, in reality, this seems only the beginning. Rain, rain and more rain. Although the eastern facade of the peninsula continues with His particular viacrucis (Especially in Alicante), the screws seem to have changed in the rest of the country: the largest accumulated will be in the south, both in the Atlantic and Eastern Andalusia aspect. Also in the central system. On the contrary, where the rains are less likely it is in the Cantabrian and the Northeast. In the Canary Islands there will be cloudy skies and scattered showers. But this will have an end … right? Of course he will have it, the problem is that we do not know when it will be. Jana is going to weaken And that, perhaps, we give us a little respite. But, as Aemet points out, “the rain will continue during the week of March 10 to 16”. After the borrasca jana“new fronts associated with Atlantic storms will sweep our country, with rainfall in large areas.” Again, the most abundant seems to be in the environment of the central and west system of Andalusia. How is this possible? A few days ago we counted that It was being established A huge blocking anticyclone between Greenland and Scandinavia. That was very good news because I was going to force the Atlantic storms to turn south. To this has been added something else: that the temperature of the surface water of the ocean is above the average and, thanks to the joint work between the blocking anticyclone and that of the Azores, an atmospheric river has been articulated that insuffes us with moisture from the Caribbean. The result is 10 days of generalized rains. That is to say, An unusually wet March. Is something of Holy Week know? This year, Holy Week falls between April 13 and 21. That is, there is a lot of time left. However, Aemet has published A climatological analysis. Unlike the predictions, what this type of analysis is investigated is the “standard time” for those days taking into account the historic. For example, According to the agency“In most of the southern peninsular half the average temperatures vary between 13 and 17 ºC” while “in the northern half we find lower values, with temperatures near the 9 ° C on the plateau and close to the 0 ºC in the summits.” Aemet The problem is that, as we can see in the superior graph, these “spring dates are characterized by their great climatic variability.” In recent years, temperatures have been high and, a priori, it is what we should expect. But there we have the year 2012 to show us that the situation can turn around when we least expect them. Image | ECMWF In Xataka | Aemet special notices are just the beginning: everything points to an extremely rainy March in Spain

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