In the middle of autumn, the days They feel more and more fresh, where despite the presence of the Sun, the temperatures do not manage to rise that much. Also More rain and snow have arrived in some sections, mainly in the southern austral, characteristic of the season.
The La Niña phenomenon appears on the scene: these will be its effects in Chile
However, behind this autumn beauty, there is a less pleasant reality. The rainfall that has already begun to reach the country from the south and that has managed to timidly reach the central zone, apparently, would show a decreasing trend, at least for this month of May.
Precipitation deficit in Patagonia, Chile
Our reference model from the European Center for Medium-Range Weather Forecasts (ECMWF) points to a trend to the precipitation deficit during May, especially in Patagonia. Although autumn began with abundant rainfall between the central-southern and southern zones, due to the constant passage of frontal systems, everything indicates that the final balance for the fifth month of the year It will be negative in terms of rainfall.
If we go into detail in Chile, we can see that, in the northern area, the normal conditions to lower than normal. It is appreciated that there would be a rainfall deficit in the northern mountain range of Arica, in the southern mountain range of Antofagasta, in the foothills and mountain range of Atacama and in the entire Coquimbo region.
Part of the north center will also follow the same pattern as the small north, experiencing below-normal rainfall volumes. While, from the south of the Valparaíso region, the west of the Metropolitan Region, in addition to O’Higgins, Maule, Ñuble and Biobío, you can see a domain of normal conditions with respect to rain. Only the Maule mountain range stands out with a slight increase in precipitation, and oppositely, the coast of Ñuble and Biobío with a slight deficit.
The southern zone pcould experience volumes of rainfall normal for the month of May. However, in the southern extreme, they are expected to present records below normalespecially in the south of Los Lagos, Aysén and the north of Magallanes.
Cold mornings and morning mists
With the presence of high pressures, cloudiness tends to decrease in the afternoons, allowing temperatures to increase; However, at this time heat dissipates quickly at nightwhich causes significant drops in morning temperatures.
It is expected that on the coast of the central zone, the formation of the coastal trough will continue generating cloudiness in that area. Additionally, humidity condenses in the mornings, causing the central valleys to continue experiencing morning fog.
Regarding the model, it is observed that the temperature anomalies would tend to be positive in certain areas and normal in most of the country. However, the influence of cold air masses that cross the southern region could cause temperatures below zero on some days in May.
The northern and central northern areas stand out, where according to the forecast, they will continue to register temperatures above normal, mainly in interior areas. This would continue to be related with constant elongation of dorsals in heightwhich apparently would continue to affect this section.
However, although the model indicates normal temperatures for this time from central to southern Patagonia, the constant arrival of frontal systems could cause the movement of warm air from more northern latitudes, which would slightly increase the temperature for a short period, since low temperatures are expected to be reestablished later, especially in the interior of the Aysén Region, where thermometers lately have marked below 0°C, and this trend is expected to continue.
Especially in the mountain range of the Aysén Region, temperatures have been below 0°C recently, and this situation is expected to persist.
In short, this May, as the leaves fall and the colors mix in an autumnal embrace, the atmosphere continues its dance, reminding us that each season has its charm and challenge. Let’s continue enjoying this time of transition in all its splendor, while remaining attentive to sudden changes in weather, to avoid respiratory diseases.
