The worst of this warm episode has not yet arrived but there are those who already have their view at its end. It is not for less, as it is customary this summer, the only thing that is helping to reduce the thermometers is the arrival of storms. And again meteorologists foresee them.
Change the trend. On Friday part of the peninsula will see A new transition Meteorological: The heat episode we now live will give way to storms. These stormy episodes will affect the north third and could be strong, leaving winds of intensity and hail.
Dorsal and trough. Again, the alternation between scorching heat and intense storms is given by the succession of dorsal and trough, air masses in height under the influence of high and low pressures respectively.
According to explains the geographer Samuel Biener in Meteoredthe change in the situation will come from the hand of an Atlantic trough driven in turn by the undulations of the stream in jet.
Two seas to red live. There is another important element in the risk that these storms suppose in summer, Remember too Biener himself. It is in the seas, and more specifically in the temperature of its surface waters.
Both the Western Mediterranean and the Eastern Cantabrian They are suffering their own “heat waves”. The waters of the surface in these regions have been accumulating several degrees above what would correspond to this time of year.
This increases the risk of convective storms. Heat and moisture are transmitted to the air on the surface and then this air interacts with possible cold and dry air masses such as those dragged by the rush that approaches, generating important storms that discharge the humidity and energy accumulated in the environment.
Uncertainty, for now. There is still uncertainty about the evolution of this new episode of storms but The forecasts From the State Meteorology Agency (Aemet), on Friday both cloudy skies are expected and “locally with a storm” rainfall. These will circulate from the west and will end up affecting most of the north third, being especially intense in the Eastern Cantabrian and Western Pyrenees.
The situation is expected to refer towards the afternoon of Saturday, although the forecasts indicate the possibility that during the day there will be “strong and accompanied by storm” rainfall between the Eastern Cantabrian and the Northeast of Catalonia. For now the agency has not issued any warning related to these storms, but it is still early to rule out a worsening of the situation.
Image | ECMWF
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