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12/06/2018, 3:15 pm EST

South America Week 2-4 Outlook

Highlight: Brazil rainfall changeable; wetter northern Argentina. Chart if the day: Warm SSTA north of Brazil enhances wet risk.   Discussion: Warm SSTA along and just south of the equator north and northeast of Brazil is enhancing a wet trade wind flow into Brazil causing a wetter-than-normal climate. Week 2 Ahead: December 16-22, 2018 Discussion:  Wet pattern in northeast Brazil continues. Southeast Brazil loses the recent very dry condition with a showery regime developing. The wet weather extends to northern Argentina. Week 3 Ahead: December 23-29, 2018 Discussion: A drier and hotter regime is evolving across Brazil except southeast and the north coast where wet weather lingers. Week 4 Ahead: December 30, 2018-January 5, 2019 Discussion: A changeable rainfall regime…Eastern Brazil is wetter and northeast sections trend drier. Turning drier in northwest Argentina.