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Thomas Adamski / Archive
MetSul Meteorologia warns of a weekend of thunderstorms in southern Brazil. A line of storms associated with the formation of a cyclone in central Argentina enters this Saturday morning in western Rio Grande do Sul. Instability advances rapidly and takes over much of the state until the end of the morning with rains.
It warns of the occurrence of isolated storms of strong to intense wind with the possibility of gusts close to or greater than 100 km / h that can cause damage, isolated hail and locally strong to intense rains with lightning and high volumes in a short time. With hot air, the advance of online instability and low atmospheric pressure increases the risk of wind storms.
The greatest risk of more severe weather this Saturday will be concentrated in the western half of the state between dawn and morning, but isolated storms may occur in other regions of Rio Grande do Sul. By the end of Saturday, isolated areas of instability maintain the risk of storms located in the North Half.
Favorable conditions for the record of localized severe weather will extend to Santa Catarina and Paraná, especially from afternoon to Saturday night, reaching mainly locations in the central eastern part of the two states.
Early Sunday, more clouds are expected to form over the northern half of Rio Grande do Sul with rain and risk of isolated storms, particularly in cities in the northwest and north. Throughout Sunday, the instability advances with locally heavy to intense rains, localized lightning and wind and hail storms in Santa Catarina and Paraná, arriving in São Paulo before the day.
In Rio Grande do Sul, the weather improves over the course of Sunday from the west and south with the advance of drier air driven by a cyclone that operates off the coast of Argentina.
Rain this weekend in the state will be erratic and poorly distributed with the highest accumulated in the west, northwest and north of the state. The volumes in some places of the Middle Plateau and Middle and Upper Uruguay should be close to or above 100 mm. In the south and east of Rio Grande do Sul, by contrast, most municipalities are expected to have low volumes of precipitation this weekend. The WRF model map, available at subscriber, displays rainfall totals as of 9am on Monday
You can follow the latest severe weather information at metsul.com and on the MetSul Meteorologia social media.
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