The sub-seasonal projections from the European ECMWF model indicate a higher probability of the Atlantic Ridge regime establishing in the second half of September, an atmospheric blocking configuration that could significantly affect the North Atlantic. This weather pattern suggests that the Atlantic Ocean could become "closed" to storms during the first days of the second half of the month, with high pressures dominating much of the region.
In Portugal, this atmospheric blocking could translate into more stable, dry weather and above-average temperatures for the time of year. The influence of the Atlantic Ridge tends to favor milder meteorological conditions without significant precipitation during this period.
The Atlantic Ridge phenomenon represents a relatively persistent atmospheric configuration that blocks the passage of low-pressure systems coming from the Atlantic, creating prolonged stable conditions in the European region.
