The weather is unsettled across much of Argentina, and according to meteorologists, what's coming could be even more turbulent: the interaction of Two low-pressure centers in southern Brazil will trigger an episode of double cyclone with the potential to alter the weather in several regions of the country.
Both the National Meteorological Service (SMN) as MetSul Meteorology warns of severe storms, strong winds and a drop in temperature over the next few days, with the peak of the phenomenon expected between Thursday and Saturday.
Where and how does a double cyclone form?
According to MetSul, one of the systems is organizes about Rio Grande do Sul and its evolution since midweek will favor a marked cyclogenesis in the southwestern Atlantic.
The models indicate values of very low pressure (around 994-995 hPa), an indicator of deep development that is usually accompanied by heavy rain and notable gusts.
In southern Brazil, they are expected accumulated rainfall exceeding 100 mm in 24 hours and winds that could approach the 100 km/h, with the possibility of localized flooding and complications in coastal and plain areas.
A cyclone is, in simple terms, a rapid rotation of air around a low pressureIn the southern hemisphere, the rotation is clockwise, and when two systems are close together, the interaction can enhance the severe conditions.
The monitoring of the latest numerical outputs points out that the most active phase It will be felt between Thursday and Saturday, with residual effects throughout the rest of the weekend.
Expected impact in Argentina: provinces and temperatures
The National Meteorological Service anticipates a widespread temperature drop and increased instability. In the Buenos Aires Metropolitan Area, minimum temperatures could remain around 7°C and 6°C on the coldest mornings, with highs close to 20 ° C in the afternoon and a marked temperature range.
There will be a storm front and heavy rain which will first affect the coast —Misiones, Corrientes, Chaco and Formosa—, where warnings are already in place for locally strong weather phenomena.
After that, the system will move towards the center of the country, with Santa Fe, Entre Ríos and Córdoba Under watch for downpours, electrical activity and strong gusts, and will reach the NOA and Cuyo —Jujuy, Salta, Catamarca, La Rioja, San Juan and Mendoza— in addition to the Buenos Aires ProvinceIn total, the event will involve at least 14 provinces.
As the circulation strengthens, the colder air will gain ground and the thermal sensation It will fall noticeably in the central and northern parts of the country, especially during the early hours of the day.
Authorities recommend paying attention to the official alerts, which are issued in colors according to the level of risk to the population:
- Green: without significant phenomena.
- Yellow: events with the potential for damage and possible localized disruptions.
- Orange: phenomena capable of being dangerous.
- Red: exceptional situation with potential for emergencies.
In the face of storms and wind, it is advisable Avoid driving on flooded streetsSecure loose objects on balconies or patios, and stay informed through the channels of the National Meteorological Service and provincial services.
For those watching from Spain or Europe, nothing is foreseen direct hit of this episode; even so, the meteorological community continues to closely follow the double cyclogenesis of the Southwest Atlantic due to its scientific interest and the dynamic similarities with storms that do affect the old continent at other times of the year.
The scenario painted by SMN and MetSul is clear: Two cyclones in southern Brazil They will reinforce the instability in Argentina with rain, gusts and a marked cooling; the focus will be between Thursday and Saturday, with a higher probability of strong episodes in the coastal and central regions, and continuous monitoring of alerts to minimize risks.
