The torrential rains mark this Wednesday, September 9, the meteorological news in Catalonia, where the episode reaches its highest risk moment during the morning. The Servei Meteorològic de Catalunya has placed Baix Llobregat, Vallès Occidental, Garraf, Alt Penedès, and Baix Penedès at level 5 out of 6, the second highest on its danger scale. In these areas, precipitation exceeding 40 liters per square meter can be recorded in just 30 minutes, accompanied by storms and possible violent weather phenomena.
The situation has forced the Generalitat to adopt exceptional measures. Educational activities have been suspended in the five affected counties, and restrictions have also been established for travel during the hours of greatest danger. Protecció Civil has activated the special emergency plan for floods INUNCAT and has requested to reduce mobility to essential cases.
The episode particularly affects the central and coastal strip of Catalonia, although the meteorological risk extends to other areas. AEMET maintains warnings for rains and storms in the community and warns of a potentially adverse situation in much of the peninsular Mediterranean area and the Balearic Islands, with the possibility of very heavy precipitation, flooding, hail, and intense gusts of wind.
A sudden change after several days of heat
The meteorological situation responds to the displacement of a colder air mass that favors the formation of storms when it encounters the warm and humid air accumulated over the last few days. This contrast is behind the irregular and potentially intense nature of the expected precipitation.
The change began to be perceived during the early morning. AEMET's records show still high temperatures in points of the Barcelona coast, but also a progressive decrease in other areas. The evolution over the next few hours will depend on the position and development of the storm centers, which can concentrate significant amounts of water in small spaces.
The situation is not limited to Catalonia. Balearic Islands, Valencia Community, and Murcia also face meteorological warnings for rains and storms, while other areas of the eastern and southeastern peninsular may record precipitation of lesser intensity. The episode is also accompanied by a widespread drop in maximum temperatures in much of Spain.
The Mediterranean also faces wind and rough seas
The episode presents other risks besides precipitation. In Girona, forecasts contemplate gusts of wind that can exceed 108 kilometers per hour in the Alt Empordà, while in certain points of the Girona coast and the Baix Empordà, waves over 2.5 meters are expected.
AEMET also maintains maritime warnings for the Catalan coastline. In the waters of Girona, Barcelona, and Tarragona, changes in the direction and intensity of the wind and a worsening of the sea state are anticipated, with downpours and storms during the hours of greatest instability.
The combination of intense rain, wind, and swell requires extreme caution in areas close to riverbeds, streams, ravines, and areas that can accumulate water quickly. Civil Protection recommends following the evolution of the warnings and avoiding both crossing flood-prone areas and staying near points where a sudden rise may occur.