The storm arrives on Friday, October 2 with red warnings for rain in Castellón and Tarragona. Early morning and the first part of the morning concentrate the highest risk on the coast of Castellón and the south of Tarragona, where storms can leave extraordinary accumulations in a short time.
Instability extends far beyond the Mediterranean. During Friday there will be heavy showers in parts of Madrid and the eastern third, and in the afternoon storms with hail are expected on the two plateaus, Aragon and the Iberian system. The southeast and the Balearic Islands can also register very strong episodes.
The episode will continue on Saturday with another distribution of the rain: the largest accumulations would move towards the coast and pre-coast of Catalonia and the Balearic Islands. For Sunday, the possibility of new storms remains open, although the forecast does not yet allow them to be assigned the same level of risk or to affirm that it will rain heavily throughout the country.
Where the red risk is concentrated
He special notice issued by the State Meteorological Agency (AEMET) on Thursday points out the center and north of the Valencian Community and the south of Catalonia as the areas of greatest impact until Friday. In these areas, showers could exceed 90 liters per square meter in one hour and leave between 200 and 300 liters in less than twelve hours. AEMET warns of possible sudden flooding in low areas, streams and boulevards.
Rain warnings maintain the red level until 11:59 on Friday on the southern coast of Tarragona and on the northern and southern coasts of Castellón. The thresholds provided there are 90 liters per square meter in one hour and 250 in twelve hours. In sectors of Valencia, the red notice ends during the early morning; lower level warnings remain afterwards.
The Agency also maintains for Friday orange rain warnings in other areas of Castellón and Tarragona, Alicante, Valencia, Murcia, Ibiza and Formentera, Teruel and areas of Almería and Granada. In yellow level there are sectors of Aragon, Catalonia, the Valencian Community, Andalusia, Castilla y León, Castilla-La Mancha, Extremadura, Madrid, Murcia and the Balearic Islands. In the Canary Islands, the east of La Palma has a yellow warning, with a threshold of 80 liters per square meter in twelve hours. They are, in total, eleven communities with some notice during Friday.
What changes from Saturday
AEMET predicts that on Saturday the heaviest rain will move towards coastal and pre-coastal areas of Catalonia and Balearic Islands. The orange warnings in force for that day affect Ibiza and Formentera during the first half of the day and the interior of Mallorca from midday, with thresholds of 40 liters per square meter in one hour. There are yellow notices in sectors of Catalonia, the Valencian Community, Aragon, Extremadura, Castilla-La Mancha, Andalusia, Galicia and Murcia. The Balearic Islands also have areas in yellow: nine communities They present warnings for Saturday, while the Canary Islands do not register any that day.
The evolution of the weekend remains open. According to the special warning, on Saturday a dana could be isolated near the west of the peninsula, which would favor showers and storms in large areas of the Peninsula during the following days. AEMET does not rule out that the most intense situation in Catalonia and the Balearic Islands will continue on Sunday, although it expects a progressive stabilization of the Mediterranean slope.