Since the 80s, DANA didn’t hit Valencian Community as is the one still moving through Spain. There are currently 51 reported deaths, but there could be more as there are still many people missing and, in addition, there are cities that have been unable to access or communicate with their mayors. It seems that DANA gave the Valencians the necessary respite, but has not left yet. According to State Meteorological Agency (AEMET)is not expected to leave us until this Thursday. Meanwhile, it could bring very heavy rain and storms to other parts of the country. There may be a risk of flooding so please be careful.
The city is currently under an orange alert. the north of Castellón and the countryside of Seville and Cadiz. It is assumed that DANA will be able to download a certain amount in 12 hours 100 mm water in Castellon and 80 mm in two Andalusian villages. This is much less than the 500 mm that were unloaded in Valencia, but still a lot. On the other hand, in different regions of the country, especially in areas Western Andalusia, Catalonia, Navarre, Castellon, Soria, Rioja, Aragon and southern Extremadura.
Fortunately, it does not look like the situation will be as dramatic as in Valencia and Castile-la-Mancha. However, there will be episodes of storms, hail and strong winds, so the public is advised to be aware of the situation in their area and avoid risky situations. We still have 24 hours DANA and it has already shown us that with it all caution is insufficient.
The terrible destructive power of DANA
Sometimes we associate the term DANA with something new that has not been produced before. However, there has always been Isolated high-level depression. If they haven’t been talked about, it’s because in the past they were colloquially called cold drops. The name DANA is more correct and specific, since cold drop is actually a broader term. But nomenclature aside, why do such terrible storms happen when DANA arrives?
Let’s first look at how they are made. It all begins high atmospheric levelat an altitude of about 9000 meters, where intense air currents moving at high speed are usually observed. Each region has its own. In Spain, for example, we are affected by the polar current, or jet, which forms in the high layers of the troposphere, circulating from west to east, separating cold polar air from warm tropical air.
These currents have a waviness that at some point can be suffocated and separated from the rest. For example, when twisting a branch, there comes a moment when one end breaks and separates.
As a result cold air cushion with closed circulationsurrounded by warmer air. When cold and warm air collide with each other, precipitation and storms occur. Thus DANA was born. They are common especially in late summer and autumn. It is important to note that DANAS typically form south of the jet stream. In the case of the polar current, this is the territory of Spain, so it is logical that they are frequent here. So they are not something new, but they are clearly becoming more intense, what is the reason?
Seawater as fuel for heavy rains
In recent years the temperature Mediterranean water He has grown a lot. This results in more water vapor surrounding the sea surface. The result is more clouds filled with more water and energy, so DANA may be accompanied by much more heavy rainfall and severe thunderstorms.
Follow DANA in the next 24 hours
According to AEMET forecasts, the province of Castellón may suffer the most from the next DANA attacks. However, there are also great concerns for Tarragona, Seville and Cadiz. If you find yourself in any of these areas, be sure to take precautions. Do not leave the house unless absolutely necessary, especially by car. Get away from beaches, rivers and ponds. Avoid drafts in your home by closing doors and windows, and if you’re still outside during a thunderstorm, don’t take shelter under trees, ledges, or any elevated objects.
Finally, as a measure hurricane precautionsBe careful where you park your car. Try to keep it away from bodies of water.
Let’s hope that in this case the situation is not as serious as in Valencia. It doesn’t look like it will happen, but it is important to prevent it.
Source: Hiper Textual
