The term “ottobrata” in meteorological language describes a period of time characterized by favorable conditions, typical of the month of October. These are clear and bright days, accompanied by pleasant temperatures and widespread atmospheric stability.
This phenomenon is closely linked to the presence of a High Pressure area, which blocks the arrival of disturbances, ensuring a period of good weather. Long-term weather forecasts indicate that, even this year, a similar situation could occur, with the North African Anticyclone dominating during October.
However, it is important to note that, unlike the summer months, autumn days are shorter and nights are longer, which limits the increase in temperatures, reducing the incidence of solar rays on the northern hemisphere.
Even if the air brought by the Anticyclone can be warm, the ground and atmosphere heat up less compared to Summer.
A possible return of the ottobrata?
Ottobratas are more frequent in Central and Southern Italy, and can last for days or even weeks.
During these periods, temperatures can exceed the seasonal average, giving a nearly summer-like warmth that sharply contrasts with the colder and rainier autumn climate that generally characterizes this period.
In the past, there have been memorable episodes of ottobratas that brought unusual weather to various parts of Italy.
Ottobrata 2014
In 2014, a long period of High Pressure generated extraordinarily high temperatures for October.
Some areas of the South and Center saw the thermometer rise up to 30°C, while in the North the highs reached 25-27°C.
This period of stable and warm weather lasted for about two weeks, providing summer-like weather in the middle of autumn.
Ottobrata 2017
In 2017, the Anticyclone dominated the weather in Italy and much of southern Europe.
During this event, cities like Rome and Naples saw maximum temperatures around 26-28°C, with a prolonged extension of good weather even in the North, where, however, a prolonged drought was recorded.
This episode occurred after a particularly hot Summer, extending the difficulties due to the lack of rain.
Ottobrata 2022
Another notable ottobrata was that of 2022, with the North African Anticyclone imposing decidedly out-of-season temperatures for much of the month. In cities like Florence, Rome, and Naples, thermometers exceeded 30°C, a value more typical of Summer than Autumn.
This unusual heat was accompanied by an almost total absence of rain, further worsening the drought that already afflicted several regions of Central Italy and Southern Italy.
Ottobrata 2011
Also in 2011, an ottobrata recorded summer temperatures in the middle of October, with highs reaching 30°C in some areas of the Center-South.
This period was characterized by the influence of the North African Anticyclone, which brought warm air, especially in the southern regions. Rome and Naples saw maximum temperatures around 28°C, extending the summer heat well beyond the normal seasonal limits. These episodes, while offering pleasant days for the population, can also bring negative consequences.
Prolonged periods of stable and dry weather, especially in Autumn, can worsen drought, affecting water reserves and agricultural crops. Moreover, out-of-season high temperatures can alter the biological cycles of plants and animals, which prepare for Winter, making the ongoing climate changes even more evident. Therefore, while ottobratas are appreciated for the mild and pleasant weather, they are also signs of how meteorological anomalies are becoming more frequent due to global warming.
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