A warming Mediterranean increases the risk of torrential rains, up to 90 liters per hour.

Madrid, Sep 8 (EFE).- A trough of cold air at altitude, coupled with the entry of humid air from a warmer-than-normal Mediterranean, will bring heavy, persistent rain with hail and intense gusts of wind to the eastern Iberian Peninsula and the Balearic Islands over the next few days.

In some places, the rains could reach torrential levels, with 90 liters per square meter in one hour and 140 liters in 12 hours.

The most adverse weather conditions are expected in the pre-coastal and southern coast of Tarragona, where the State Meteorological Agency (Aemet) has issued a red warning (extreme risk) due to the forecast of rainfall exceeding 90 liters per square meter in one hour.

"We urge maximum caution due to the high probability of flash floods in the area," warned Rubén del Campo, spokesperson for Aemet.

In Aragon and the Valencian Community, an orange warning (significant risk) has been issued for rainfall that could accumulate between 30 and 60 liters in one hour. Meanwhile, in the Region of Murcia, Mallorca (Balearic Islands), and the province of Albacete (Castilla-La Mancha), yellow warnings remain in effect for storms and rain with accumulations of between 15 and 25 liters in one hour.

Del Campo explained that this instability is associated with the advance of a trough, a tongue of cold air in the upper atmosphere that favors the formation of storm clouds in its forward region. These clouds will also be reinforced by the entry of humid air from the Mediterranean, with temperatures up to two degrees above normal in some coastal areas, a factor that will contribute to the intensity of the showers.

Furthermore, rain will also fall in the Cantabrian regions this Monday, although less intensely. Temperatures are expected to drop in the north and east of the peninsula and remain unchanged elsewhere. In the Cantabrian Sea, temperatures will barely reach 18-20 degrees Celsius, with highs far from Córdoba or Málaga, where they will reach 35 degrees Celsius.

Tuesday

Starting Tuesday, "the bulk of the instability" will shift to the Balearic Islands, bringing persistent showers with hail, wind, and torrential rains that will exceed 60 liters per square meter in one hour and could accumulate more than 140 liters per square meter in less than 12 hours.

Del Campo emphasized taking precautions, especially in the ravines and gullies of the Balearic archipelago, which could experience sudden, sharp increases in water flow.

This day will also see lighter rain in the Cantabrian Sea, and temperatures will generally drop, except in some parts of the Cantabrian Sea, with temperatures only reaching 30 degrees Celsius in the Guadalquivir Valley, the Costa del Sol, and parts of eastern Andalusia.

Wednesday

Instability will persist in the Balearic Islands on Wednesday, with very strong storms that will also affect Catalonia and other parts of the northeast of the peninsula, especially in the first half of the day.

The storm will ease as the day progresses, although some intense storms will form again in Catalonia in the afternoon. Meanwhile, a front will reach Galicia, bringing heavy rain to the west of the region, which will spread to the rest of the Cantabrian regions and the northern plateau.

Today, the early morning will be cool in the northern interior, and some cities such as Vitoria, Soria, Teruel, and Burgos will have lows of 7 to 9 degrees, in contrast to parts of the province of Seville, where highs could reach 34 to 35 degrees.

Thursday

Del Campo noted that an "anticyclonic situation" will begin on Thursday, with rising temperatures across Spain. It will strengthen over the following days, with temperatures exceeding 32-34 degrees Celsius on Friday and especially over the weekend in the central and southern half of Spain, and even reaching 36 degrees Celsius on the Guadalquivir.