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Spring weather with haze, frost at dawn and low joke in Manlleu, in the Osona region, as can be seen in these images in The Photos of the Readers of La Vanguardia.
In some areas, the popular "Pubilla de la Plana de Vic", that is, the Osona fog, is also known as "baixa joke". Basically, it's when a sea of fog comes down and covers everything.
It must be borne in mind that the Osona region is the place in Spain with the most foggy days, around a hundred a year.
When the cold air from the higher parts descends and stagnates in this sunken (flat) plain, the water vapor condenses into microscopic droplets. This is how a sea of fog is produced that is a characteristic part of the landscape.
For its part, haze is a meteorological phenomenon consisting of the presence in the atmosphere of very small particles of dust, ash, clay or sand in suspension. In this case, Saharan dust.
