It is something more worrying for Spain

“This is not just an Atlantic storm,” they said in Meteosureste and, despite the skepticism of some, they were right. Although the models had been warning for days of a possible storm with subtropical characteristics, no one seemed to believe it. And, in fact, no agency has decided to name it.

However, on the morning of October 29, things have accelerated.

What has happened? It is no longer that an organized convection has been transformed into a mesoscale convective system with clear tropical characteristics (signs of internal circulation and bands of precipitation rotating about its center); is that, as MeteoBadajoz has been explaining, the system has started to become in a whole “convective train” with a line of storms in crescendo from the coast

AEMET has activated the red notice and, as we speak, a good number of municipalities on the Huelva coast are suffering its impact.

Why is it interesting? As explained Adrián Corderocoinciding with the anniversary of DANA in Valencia, “the atmosphere, capricious, leaves us a new convective chimney that, from the satellite, is very reminiscent of the one from a year ago.”

Fortunately, as he also explains, “the orography and hydrology of both areas are not comparable.” It is not something comparable to Dana neither in intensity nor in its consequences: however, it is not a minor phenomenon.

The ‘tropicalization’ of Andalusia. That area of ​​the Gulf of Cádiz is prone to low convergences that, with adequate shear and sufficient humidity, They organize convectively very easily. That is to say, it is nothing strictly new: but it does represent a warning to sailors.

After all, mesoscale convective systems are very efficient rain “factories” that can anchor bands of precipitation over the same territory for hours, multiplying the accumulation and the risk of rapid flooding.

As connections with the Gulf of Mexico (the famous ‘rivers of moisture’) become more common, these systems will become more frequent and more intense. And worst of all: it’s a matter of time before a dangerously tropical storm is planted at the gates of Doñana.

In Xataka | The threat to Spain brought about by Hurricane Danielle has a name: extratropical transition