South America Week 2-4 Outlook
Highlight: Incoming cold for Southeast Brazil this week.
Charts of the day: Cold outbreak Southeast Brazil!
Discussion: A cold surge rolls into Southeast Brazil tonight. Temperatures descend to -1C to -3C Wednesday morning. The cold peak is Thursday morning when more widespread -1C to -4C is expected. GFS ENS indicates widespread risk of <32F and <28F risk Interior Southeast Brazil. The cold repeats Friday morning although slightly less intense. A 3-day cold event for Southeast Brazil!
Week-2 Ahead Forecast valid August 1-7, 2021: Cool pattern eases slowly.
Discussion: The cool pattern slowly eases in Paraguay to Brazil. Most of Brazil into Argentina stays dry.
Week-3 Ahead Forecast valid August 8-14, 2021: Warm reversal.
Discussion: A warm-reversal for Paraguay/Brazil. The precipitation pattern stays mostly dry.
Week-4 Ahead Forecast valid August 15-21, 2021: Chance of rain.
Discussion: Largescale support for a wetter pattern and ECM identifies that risk for southern Brazil, Paraguay and Uruguay.