La Nina-driven weather patterns in the last months are bringing very sharp changes of weather into South-American the most populated areas, the last heatwave was peaking on 2.-3. September 2021 and brought these anomalous temperatures:
+42,0°C was measured in San Matias, Boliviaon 2. September 2021.
+41,5°C was observed in Rivadavia, northern Argentina on 2. September 2021 (August record for the city I +41,2°C, therefore it was very probably at the level of temperature records for early September /https://en.wikipedia.org/wiki/Rivadavia,_Salta/).
+41,2°C was reported from Paraguayon 2. September 2021.
Alternating extreme heatwaves with Antarctic blasts with frosts and ground frosts have a very negative effect on regional harvest, with a result of severe drought, in northern parts wildfires and in some cases on increasing a price of commodities such as coffee or oranges.
In outlook, 2 relatively strong coldwaves are forecasted firstly for Chile and Argentina, later for Uruguay, Paraguay, Bolivia, and southern Brazil, with peaks around 9. and 18. September 2021.
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