August will end with a notable episode of showers, strong storms and hailwhich will affect large areas of Spain. Thursday is expected to be the day with the highest accumulation of rain, although instability will persist for a few more days. In addition, Wednesday will be the last hot day of the month, as a significant drop in temperatures in several regions.
The first signs of the change in weather will begin to be noticed tomorrow. TheState Meteorological Agency (AEMET) indicates that a deep trough at altitude with an isolated cold core will be located west of the Iberian Peninsula and, on the surface, An Atlantic front will approach the extreme northwest of the peninsula.
Cloudy skies are forecast for Galicia and the western Cantabrian Sea today, with light rainfall expected, which is more likely and intense in the north of the Galician community. In the rest of the Peninsula and the Balearic Islands, the day will start with few clouds or high clouds, which will increase to medium and high clouds in the west and south. In the afternoon there will be some showers and storms in the Iberian System and the Pyrenees.
In addition, Calima will arrive in the southern third of the Peninsula and Alboranwithout ruling out that it will spread with less intensity throughout the rest of the southern half. As for temperatures, they will begin to drop in the Cantabrian Sea. and will rise in areas of the centre and northeast. Temperatures will exceed 36ºC in depressions on the southern Atlantic slope and areas of the middle Ebro, and even 38ºC in parts of the Guadalquivir, Guadiana and Tajo.
The areas of Spain most affected on Thursday
The trough will move towards the northwest of the peninsula on Thursday, affecting large areas of the west and centre of the Peninsula. From early in the day Showers are expected in a wide strip from north to south between the Cantabrian Sea and the Guadalquivir valley.still with some uncertainty as to whether they could extend to the Strait. These showers, in addition to being locally strong or very strong and be accompanied by storms, they can present persistence and leaving significant accumulated precipitation, above 40 mm.
Storms and showers will spread in the afternoon to northwest of the peninsula and the upper and middle Ebro, eastern Pyrenees and northern Iberian. Some of the storm cells could be associated with locally very strong gusts of wind. With this situation, a significant drop in daytime temperatures in a wide strip of the interior of the peninsula between the northeast of Castile and León and the center of Andalusia.
More storms over the weekend
From the Fridaya DANA will approach the northwest of the peninsula, so storms and showers will continue, although they will most likely be located around the Cantabrian mountain range, Iberian system and Central systeml, where they will remain locally strong, although they may spread to the eastern third of the peninsula and the southeastern mountain ranges.
During the weekendthe most likely scenario is that The DANA moves through the Cantabrian Sea while it begins to be absorbed by the general circulationso there could still ber showers and storms more likely in the northern half of the peninsulaalthough Meteorology indicates that the uncertainty for these days is even greater.