Fiona will disrupt the polar jet in the coming days: consequences in Portugal
You can play as Fiona condition the weather situation of the Iberian Peninsula without even The truth is, yes, like any large weather system that violently erupts in the polar jet. and deforms the mid-latitudes circulation. But first, it will have the possibility to go through several of its life cycle.
Fiona is already a “major” or great
As of a few hours ago, and after causing serious damage in Puerto Rico and the Dominican Republic, Fiona became a “biggest hurricane”which is like the National Hurricane Center name Hurricanes that meet Category 3 or higher.
The winds are at 180 km/h and they indicate that they will continue to increase until or reach their 220 km/h, which would make it a higher category 4 number.. Fortunately, it is heading towards the open waters of the North Atlantic, so, why, it will not pose a direct threat to the population, although it could be Bermuda in the next few days.
After reaching this intensity, Fiona arrive to the north and start for her extratropicalization, that is, its mid-latitudes storm transformation. Nonetheless, this process will be chosen violent in the case of Fiona: will lose with difficulty, keeping strong winds of heavy force over a considerably large area with force.
This will have to be taken into account especially in the Labrador Peninsula, where waves and winds can be observed during the weekend. It will probably already be somewhat likely, but its effects on land are likely to be more extensive..
A violent incorporation into the polar jet
The extratropicalization has a jet as soon as Fiona enters the polar and passes to a strong baroclinic instabilitythat is, a region where the temperature conditions at all conditions can change, either in the horizontal plane.
It is necessary for the development of mid-latitudes storms but very unfavorable for tropical cyclones, and your entry into this area will be particularly fast, this system will force the determination of a transition that will be very abrupt.
This process will generate a wave in the polar jet that will propagate eastward.robust or very robust of an anticycle over the Central Atlantic, but causing a great planetary depression to descend over Europe.
Fiona’s extratropicalization process will increase a wave in the polar jet, favoring the appearance of the Atlantic anticyclonic ridge and causing a great depression to descend over Europe.
This opening is for the entire continent next week and will move to the Iberian Peninsula, where can expect a period of development, in which they will develop, in addition, they will develop, the dimensions compared to previous days. Given that we are talking about averages, there are many uncertainties in terms and, therefore, foreseen in the various scenarios.
An isolated isolated at altitude may be isolated in the vicinity of the Peninsula
One of them contemplates the isolated isolation at the height of the Peninsula of the. This is perhaps one of the scenarios that most attracts attention, as it would result in the development of strong thunderstorms on its eastern flank, affecting the interior areas of Portugal mainland and center Spainas well as the east of the neighboring country.
However, it cannot be excluded that it may sink to higher levels of the atmosphere if it develops eastward.affecting only the Mediterranean, or even that the depression does not form and all of it moves to areas east of the Iberian Peninsulainducing cold discharge across Western Europe and a significant drop in temperatures over the Peninsula, but with less precipitation.
These projects will be reinforced or adopted as the week progressestherefore they will have to be monitored closely.