This week first heat, then blood rain followed by DANA in Spain

by admin
calima and blood rain

After a relatively cool start to the week, Spain is preparing for a new wave of heat. In various corners of the country, residents can prepare for thermometers to climb to a scorching 38 to 40 degrees. In addition, from Thursday the phenomenon ‘calima’ will bring ‘blood rains’ as an unusual guest.

This red-tinged precipitation or mud rain is a relatively rare sight. During the calima, the air is full of desert dust particles, which end up on Earth as a brown layer of mud due to precipitation. It will then become cooler at the weekend due to the arrival of a DANA. This brings a fair amount of rain, but also thunderstorms.

Heat peaks approaching

According to Rubén Del Campo, the voice of the Spanish weather service Aemet, we are heading for an increase in temperatures. From Tuesday, northern areas will reach 30 degrees, while the heart of the peninsula, together with Extremadura, Andalucia and western Castilla-La Mancha, could reach 34 degrees. The valleys of the Guadiana and Guadalquivir (the interior of Extremadura and Andalucia) may even exceed 35 degrees. And although Monday was already marked by heavy local showers, especially in Catalonia, the intensity seems to be decreasing.

The temperature rise will continue from Wednesday to Friday. Cities like Valladolid and Palencia can expect temperatures of up to 34 degrees, while Madrid, Zaragoza and Lleida will hit 35 degrees. Seville and Córdoba are bracing themselves for a hot 38 degrees. And on the night from Thursday to Friday, the night will be tropical in parts of the centre and south of the country, when the mercury will not drop below 21 degrees.

Calima and ‘rains of blood’

Thursday is the day when temperatures reach their peak, with large parts of Spain exceeding 36 degrees. Madrid, Toledo and Granada will reach 38 degrees, and in Córdoba it will even be 40 degrees. A warm air flow from Africa brings dust particles, which causes calima, especially in the south. This can lead to the aforementioned ‘blood rains’, where the rain turns a reddish-brown color due to the mixed dust. Would you like to see for yourself in which part of Spain the sky turns yellowish to red as a result of a calima? Then click on this interactive weather map.

In March 2022 there were several episodes of calima combined with heavy rain showers. Entire towns and villages then turned brown. In some cases, people had just cleaned their terraces, whitewashed their facades and cleaned their cars when the next episode struck.

The cooling DANA

Cooling will follow between Friday and Saturday. A DANA, which is currently still near the Azores, will move towards the peninsula and drop temperatures by 8-10 degrees. While there is still a lot of uncertainty surrounding this weather phenomenon, it could develop into an isolated cold depression with several fronts. The first effects will be felt in the west and south of the peninsula on Friday afternoon, with rainfall and falling temperatures.

Low pressure areas will reach the rest of the peninsula on Saturday, resulting in rain showers everywhere in Spain, except on the eastern Mediterranean coast and the Balearic Islands. These showers will be heavier in the north, especially in the eastern part of Cantabria, northern Navarre, the Pyrenees and northern Catalonia. The rain showers will continue on Sunday, although stability appears to gradually return at the beginning of next week.

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