Tropical storm in South America! Rare system Potira hit Rio de Janeiro, Brazil




Tropical storm in South America!

Very rare phenomenon has appeared near coast of Brazil early this week, with impact into Rio de Janeiro region.

The Brazilian Navy has upgraded a depression to Subtropical Storm Potira off the coast of Rio de Janeiro. South-American tropical systems are most common from November to May (in summer half in Southern Hemisphere), but can happen at any time of the year. This one is moving away from Brazil into the Atlantic.

According to Brazilian watchers /https://www.meteored.cl/noticias/pronostico/tormenta-subtropical-potira-llegara-con-intensas-lluvias-a-rio-de-janeiro-abril-2021-brasil.html/, Pontira is the first tropical storm in April which was developed near Brazilian coast since 2011.

Status of a tropical storm for this region of the world is almost impossible to reach, described Accuweather /https://www.accuweather.com/en/hurricane/subtropical-storm-potira-near-brazil/935912/. Main factor for very weak development of storms in Southern Atlantic is very strong wind shear.

The next important factor is SST (sea surface temperature) above Southern Atlantic waters, which is almost throughout all year insufficient to development of tropical disturbances.

Moreover, conditions above continent are currently very hot and stormy - many parts of Brazil reports tropical temperatures +30/+35°C and severe storms.

The strongest impacts of the systems are expected in Rio de Janeiro region, where rainfall up to 50 mm is possible, with local flash floods. Effects of the system however will be decreasing until Thursday, 22. April 2021 and storm wil stay active above Atlantic until the weekend.

Between years 2010 and 2019, only 9 storms such Potira appeared on the coast of South America (Brazil), but in 2020 and 2021 it is already 4th tropical storm only for 2 years. It should be linked with warming trend of SST near Brazilian coast, such as with changing of circulation patterns in the region.

Before 2010, these storms near South America were very rarely, however, Hurricane Catarina, Category 2 appeared around 28. March 2004 /https://en.wikipedia.org/wiki/Hurricane_Catarina/.

Catarina, only one South-American hurricane in history, brought 1-minnute sustained winds up to 155 km/h and record low pressure in South Atlantic, only 972 hPa. It caused 3-11 direct deaths in Brazil and 350 million damages mainly in the states of Santa Catarina and Rio Grande de Sul, southern Brazil.

Thunderstorm in Rio de Janeiro associated with tropical storm Potira /Source: Potira: primera tormenta subtropical de abril que se forma en Brasil (meteored.cl)
Source: Subtropical Storm Potira Near Brazil | AccuWeather
Source: Potira: primera tormenta subtropical de abril que se forma en Brasil (meteored.cl)
Source: https://www.youtube.com/watch?v=czsnnzDkfEk
Source: https://www.youtube.com/watch?v=czsnnzDkfEk
24-hour precipitation in Brazil until Tuesday, 20.4. 2:00 PM, Source: Meteologix.com
Maximum temperatures in Brazil on Tuesday, 20.4., Source: Meteologix.com
Source: South Atlantic hurricane tracks - South Atlantic tropical cyclone - Wikipedia
Source: South Atlantic tropical cyclone - Wikipedia
Source: world Weather South America, Satellite Weather South America, Weather Forecast, Rainfall, Clouds, Sun in South America - SAT24.com
Source: Catarina 27 mar 2004 1630Z - Hurricane Catarina - Wikipedia

Read more:

(Visited 20 times, 1 visits today)
Liked it? Take a second to support mkweather on Patreon!
Tags10 day forecast14 day forecast15 day forecast16 day forecastaccuweather PotiraAfrica forecastAlbania weatherAleutian lowAmarilloAntarctica weatherAO indexArctic airArctic AmplificationArctic blastArctic oscillationArgentinaAsia extreme weatherAsia forecastAsia severe weatherAthens forecastAtlantaAtmospheric blockingAustralia forecastAustria weatherBelo HorizonteBerlin forecastblizzardblocking patternBoliviaBordeaux forecastBostonBrasiliaBrazil extreme weatherBrazil flash floodsBrazil hurricaneBrazil meteo warningsBrazil severe weatherBrazil tropical systemBrazil weather warningsBrazilian Navy PotiraBuenos AiresBuffaloCAIRO FORECASTCalgaryCanadaCanada long term forecastCanada severe weatherCasperCheyenneChicagoChileCHISINAU FORECASTClevelandclimate changeclimate change hurricanessADANA FORECASTCOBENHAGEN FORECASTcold blastcold spellcold weatherColombiaCordoba forecastCORK FORECAST CROATIA WEATHER FORECASTCOVID-19cycloneDenverdroughtdryDRY SEASONDuluthEcuadorEdmontonEuropeEurope extreme weatherEurope long term forecastEurope severe weatherEurope snow forecastEurope temperature forecastEXTREME CIRCULATIONextreme cold weatherEXTREME FORECASTextreme frostsEXTREME LOW TEMPERATURESEXTREME SPRING FORECASTEXTREME TEMPERATURES USAEXTREME WEATHER 2021extreme weather Canadaextreme weather Europeextreme weather USAFinland weatherfloodsforecastFORECAST ALGIERSFORECAST ANKARAFORECAST ANTALYAFORECAST BARCELONAforecast BelarusFORECAST BELEGRADEFORECAST BELFAST FORECAST BELGIUMFORECAST BIALSKO BIALAFORECAST BIRMINGHAMforecast Brazil forecast Rio de JaneiroFORECAST BRIGHTONFORECAST BRISTOLFORECAST BRNOFORECAST BUCHARESTforecast Bulgariaforecast CanadaFORECAST CARDIFFFORECAST CHINAforecast CzechiaFORECAST DENMARKFORECAST DONETSKFORECAST DUBLINFORECAST DUBROVNIKFORECAST EDINBURGHFORECAST EGYPTFORECAST ESTONIAforecast EuropeFORECAST FRANKFURTFORECAST GENEVEFORECAST GENOAFORECAST GOTEBORGFORECAST ICELANDFORECAST SAN FRANCISCOforecast Sao Pauloforecast USAFrance weatherfrostsGreat Lakes forecastGreece weatherGreenland highGuyanaHamburg forecastheatwaveheavy rainHelenaHELSINKI FORECASTHeraklion forecasthistoric frostshot weatherHoustonhumidhumidexhurricanehurricane Brazilhurricane Catarina South Americahurricane South AmericaHurricane South AtlanticICE RAINIcelandic lowInnsbruck forecastInternational FallsIRELAND WEATHER FORECASTIstanbul forecastItaly weatherIzmir forecastJapan forecastJapan weatherKansas CityKARASJOK FORECASTKOELN FORECASTKorea forecastKOSOVO WEATHER FORECASTKRAKOW FORECASTKYIV FORECASTLa Coruna forecastLa-niňalandslidesLATVIA WEATHER FORECASTLE HAVRE FORECASTLIBYA WEATHER FORECASTLisbon forecastLITHUANIA WEATHER FORECASTLJUBLJANA FORECASTLODZ FORECASTLondon forecastlong-term forecastLos AngelesLULEA FORECASTLUXEMBOURG WEATHER FORECASTLYON FORECASTMadrid forecastMalaga forecastMALTA WEATHER FORECASTManausMANCHESTER FORECASTMARSEILLE FORECASTMiamiMid-Atlantic forecastMiddle East forecastMIDDLE EAST WEATHER FORECASTMidwest forecastMILAN FORECASTMINSK FORECASTMOLDOVA WEATHER FORECASTMongolia forecastmonsoonmonsoon AsiaMONTENEGRO WEATHER FORECASTMontrealMOROCCO WEATHER FORECASTMOSCOW FORECASTMunich forecastMURCIA FORECASTNAO indexNAPLES FORECASTnegative phase Arctic oscillationnegative phase NAONETHERLANDS WEATHER FORECASTNew YorkNEW ZEALAND FORECSASTNICOSIA FORECASTNOAANorth Atlantic OscillationNORTH MACEDONIA WEATHER FORECASTNORTH PACIFIC LOW PRESSURENortheast forecastNorthern HemisphereNorthern Plains forecastNorthwest forecastNorway weatherNOVOSIBIRSK FORECASTODESA FORECASTOklahoma CityOrlandoOSLO FORECASTOttawaOULU FORECASTOymyakon forecastParaguayParis forecastPEAK WEATHERPeruPhiladelphiaPhoenixPittsburghPODGORICA FORECASTPOLAND WEATHER FORECASTpolar vortexPorto forecastPORTUGAL WEATHER FORECASTPotiraPotira systemPrague forecastPRISTINA FORECASTQuebecRABAT FORECASTRAINY SEASONRapid CityREYKYAVIK FORECASTRIGA FORECASTRio de Janeiro floodsRio de Janeiro precipitatonRio de Janeiro warningsRio Grande de SulRocky MountainsROMANIA WEATHER FORECASTRussia extreme frostsRussia forecastSAHARA FORECASTSANKT PETERSBURG FORECASTSanta CatarinaSCOTLAND WEATHER FORECATSEASONAL FORECAST USASeattleSERBIA WEATHER FORECASTsevere frostsSEVERE WEATHE RUSASevilla forecastSiberian blastSiberian highSioux Fallsski center Europe forecastSKOPJE FOECASTSLOVAKIA WEATHER FORECASTSLOVENIA WEATHER FORECASTsnowstormSOFIA FORECASTSouth America extreme weatherSOUTH AMERICA FORECASTSouth America severe weatherSOUTHERN USA FORECASTSouthwest forecastSPAIN WEATHER FORECASTSST South AtlanticSTOCKHOLM EXTREME SPRING FORECASTstormstorm forecaststorms Brazilstorms Potirasubtropical stormsubtropical storm PotiraSurinameSWEDEN EXTREME WEATHER FORECASTSWITZERLAND WEATHER FORECASTTALLIN FORECASTtemperature recordtemperature recordsthunderstormTIRANA FORECASTTorontoTORSHAVN FORECASTTROMSO FORECASTtropical cycloneTropical depressiontropical stormtropical storm BrazilTropical storm Potiratropical storm Rio de Janeirotropical storm Sao Paulotropical storm South AtlanticTROPICAL SYSTEMtropical system PotiratropicaltidbitsTulsaTUNIS FORECASTTURKEY WEATHER FORECASTtyphoonUK weather forecastUKRAINE WEATHER FORECASTUruguayUSUSA extreme cold blastUSA extreme weatherUSA forecastUSA long term forecastVancouverVenezuelaVILNIUS FORECASTWales weatherwarm spellwarm weatherWARSAW FORECASTWEATHER 2021 USAweather BRazilWEATHER FORECAST BERGENWEATHER FORECAST CANADAWEATHER FORECAST ENGLANDWEATHER FORECAST ERZURUMweather forecast europeWEATHER FORECAST USAweather outlookWEATHER OUTLOOK USAWEATHER PROGNOSIS USAwetwetterzentralewind shearwind shear South AtlanticwxchartsZAGREB FORECASTZURRICH FORECAST

ARTICLES

COVID19 LIVE

Widget for web.