The Spanish State Meteorological Agency (AEMET) has warned about the formation of two bombogenesis in the Atlantic that will affect some regions of the Iberian Peninsula. The weather phenomena will cause heavy rainfall, strong gusts of wind and snowfall in mountainous areas. The organization has asked the population to remain attentive to risk warnings and follow the recommendations of the Civil Protection teams.
A bombogenesis or explosive cyclogenesis occurs when a storm intensifies rapidly in the mid-latitudes. It occurs when the atmospheric pressure of the cyclone falls between 18 and 20 hectopascals (hPa) in 24 hours. In some cases, they can acquire characteristics similar to those of a hurricane. The National Oceanic and Atmospheric Administration of the United States indicates that these disturbances occur “when a mass of cold air collides with a mass of warm air.”
What is expected from the hype that will affect Spain
Meteorological services predict that the first cyclogenesis will begin to form in the Cantabrian Sea this Wednesday. They predict that atmospheric pressure will decrease by 19 hPa. The weather pattern will generate torrential rains and strong winds in the north of the peninsula between Thursday and Friday. The communities of Galicia, Asturias and the Basque Country could experience significant accumulations of water.
Predictive models anticipate that the second bombogenesis will form near the British Isles in the North Atlantic. Although the system is expected to emerge far from Spanish territory, its magnitude has caused concern among meteorologists. They predict that the phenomenon will cause an atmospheric drop of up to 42 hPa in a single day. Consequently, a cold front will develop that will affect Spain from Sunday.
The AEMET has issued multiple warnings about the weather conditions expected for the coming days. A yellow alert has been activated from the town of Aragón to the north of Castellón and part of Barcelona due to the presence of strong winds. It declared a high risk for the pre-coastal region of Tarragona. Gales of up to 90 kilometers per hour are expected in the area. The gusts will also be intense in the southern interior of Valencia. The agency has said that the coasts of Galicia and Asturias will experience an eighth-grade storm on the Beaufort scale starting Thursday.
Bombogenesis is not unusual. However, scientists suggest that Climate change is increasing in intensity and the destructive potential of its consequences. A study published in the journal The Journal of Climate concluded that explosive cyclogenesis on the European continent will be more dangerous in the years to come due to the environmental crisis. The researchers used a advanced climate model to simulate storms Alex (October 2020), Eunice (January 2022) and Xynthia (February 2010) in a future scenario with high greenhouse gas emissions. They found that under these conditions, there may be an increase in precipitation and wind speeds over land associated with these atmospheric variations. They warn that this poses a threat to coastal communities that must be addressed now.
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