Not my words, but worth a read if not done so already Why is the Iberian Peninsula experiencing a continuous string of storms? In recent weeks, the Iberian Peninsula has experienced a drastic change in its weather pattern for this time of year, characterized by the incessant passage of fronts and storms. To understand why it keeps raining and why storms keep coming one after another, it's necessary to look to the upper atmosphere and analyze the behavior of the Jet Stream and atmospheric blocking patterns at high latitudes. 1. The Jet Stream The direct cause of this situation is the Jet Stream. It's a river of strong winds that circulates at an altitude of about 10-12 km and acts as the "conductor" of the weather in mid-latitudes. This current separates the cold polar air from the warm subtropical air and guides the polar front, which is the area where storms originate and move. Storms typically circulate at higher latitudes. However, when the polar jet stream shifts south and points directly toward the Iberian Peninsula, it acts like a conveyor belt or "highway" that brings storms directly to us. 2. The culprit behind the detour: The Anticyclonic Blocking System in the North The reason the polar jet stream has shifted southward and continues to point toward Spain lies in a phenomenon known as the North Atlantic Blocking System. • The Wall in the North: Currently, a powerful blocking anticyclone has formed between Greenland and Scandinavia (high latitudes). This high-pressure system acts like a rock in a river, forcing the jet stream to deviate. • The Open Path to the South: Unable to travel its usual route north, the jet stream is forced to shift southward. This opens a "corridor" or direct path from the Atlantic to the Iberian Peninsula, channeling a succession of very active storms toward our region. 3. The Negative North Atlantic Oscillation (NAO) This atmospheric pattern coincides with a negative phase of the North Atlantic Oscillation (NAO). • Positive NAO: Normally, the Azores High is strong and diverts storms towards northern Europe.