This Tuesday is being the hardest day of the winter storm that began on Monday. The most complicated situation is experienced in Catalonia, with a red warning, the maximum level of the three contemplated by the Meteoalerta system of the State Meteorological Agency (Aemet), due to rains of up to 180 liters per square meter in 12 hours in the south coast of Tarragona. This community also has an orange warning, the second level of the scale, for storms, orange for snowfall and yellow, the lowest level, for strong gusts of wind of up to 80 kilometers per hour, and also yellow for rough seas, with waves four to five meters. The other factor of concern is snow, with a total of 18 provinces of 10 communities with a snow advisory. In addition to Catalonia, Aragon, the two Castiles and La Rioja have an orange warning, while Asturias, Cantabria, the Sierra de Madrid, Navarra and the Valencian Community are in yellow. They complete the map of yellows due to rains of up to 40 liters in one hour in Aragon, Asturias, the Balearic Islands, Galicia and the Valencian Community, and yellows due to rough seas in Asturias and Galicia.
The storm is due to the presence of a dana (isolated depression at high levels) at high levels of the troposphere. “The cold air in its bosom, and the circulation of winds that is generated around it, favor the formation of cloudiness, which gives rise to heavy snowfall and rainfall, fed by the flow of humid air from the Mediterranean,” explains Del Campo. The effects of dana are reflected on the surface, with the appearance of a “minor” cold storm in the Mediterranean, which has not been named, unlike Blas, because it has not been deepened enough and has generated almost no warnings, which are mainly due to damage.
In the last 24 hours, “the level has been going down”, until Monday night stood at 800 meters on the northern plateau, which is why it snowed in Ávila and Segovia. In the east, the level was higher on Monday, but it has been decreasing. According to the DTG, around four in the afternoon about 550 kilometers of roads in seven provinces, the vast majority of the secondary network and in the northern half of the peninsula, had restrictions due to accumulation of snow on the road. It has also been, and is, very cold. “At dawn there have been very cold values in mountain areas, among which Sierra Nevada stands out with -12, or La Cobatilla (Salamanca), with -7º”, emphasizes the expert, to also highlight the “very intense rains in the area Mediterranean ”.
In Alicante and southern Catalonia there have been torrential showers, with 67 liters per square meter in one hour in Tortosa (Tarragona), where 125 liters have been collected from midnight to eight in the morning. So far during the day, it has not stopped raining and 195 liters accumulate there at four in the afternoon. These figures make Monday the rainiest day in November in the station, with data from 1920. In other parts of Tarragona, such as Horta de Sant Joan and Rasquera, 96 and 85 have been collected. In addition, there has been a strong hail in Elche and other parts of the province of Alicante, such as the capital.
What a hailstorm! A strong storm has discharged this past dawn with great intensity in the interior of the Vega Baja, in Elche and also in the city of #Alicante. From there, Miguel Tagres sends us these impressive images of the streets full of water and hail. pic.twitter.com/ClQzhVZcVD
– Mastral Project (@ProyectoMastral) November 23, 2021
This Tuesday will be “probably the most adverse day in this winter situation,” warns the expert, with more rains, which can be very strong, persistent and accompanied by a storm in the south of Catalonia and north of Castellón, so it is still active the orange notice. Intense and persistent rainfall is also expected in the rest of the Valencian Community and Catalonia, the Ebro basin and the Balearic Islands, as well as copious snowfalls from 700/900 meters in the Cantabrian mountain range, central and Iberian systems and Pyrenees, and more weak in flat areas of both plateaus and in moors of the central zone, especially in Salamanca, Ávila, Guadalajara, Soria, Segovia, Cuenca, Teruel and Zaragoza.
In addition, there will be strong gusts of wind on the coasts and temperatures will decrease except in Galicia, where they will rise a bit. Up to 22 capitals will be below 10º and it will be cold especially in Ávila (3rd), Segovia (4th), Burgos and Soria (5th), Guadalajara and Vitoria (6th), and Madrid, Palencia, Pamplona, Salamanca, Valladolid and Zamora (7th).
On Wednesday abundant rainfall will continue in the Cantabrian Sea and in eastern Catalonia, where it can be strong and persistent. It will also continue to rain in the Balearic Islands and snow copiously in the Cantabrian Mountains, the central system and the Pyrenees, but at higher elevations, above 1,000 / 1,400 meters, as well as in the Iberian system and in eastern points of the plateau, with a height of 700 900 meters. In the rest of the center and the northern half it will be cloudy with light rains, while temperatures will rise in the west, but fall in the east.
On Thursday, more unstable weather, with intense and persistent rains in the Cantabrian Sea and in the morning in Catalonia, the Balearic Islands and Melilla, while in the afternoon it will be in western Andalusia and southern Extremadura. “It cannot be ruled out that it will rain at some point in any part of the Peninsula, with a snow level of 800 / 1,000 meters, so it will continue to snow abundantly in the Pyrenees and the Cantabrian Mountains”, adds the Aemet spokesperson. In the Canary Islands, locally strong showers and storms until Saturday.
On Friday it will continue to rain in the northern third, the Balearic Islands and Melilla, with possible showers in the central and southern mountains. The elevation can even drop to 700 meters in the northern half, and the cold environment will continue, with more frosts on Friday, which will affect the eastern interior of the Peninsula and will be intense in mountain areas. The weekend “it seems likely that a cold front will arrive with abundant rains and snowfalls in the northern third, rainfall in the rest of the mountain systems and some weak and scattered rain in flat areas.” Temperatures will remain low for the season.
George Holan is chief editor at Plainsmen Post and has articles published in many notable publications in the last decade.