The 60-day rainfall pattern (since July 24th) has featured mostly drier than normal climate across much of India while areas of wet weather affected China in between excessive hot/dry spells. The prevailing upper air pattern featured low-pressure wet weather zones from the Philippines toward Japan and east of Caspian Sea with general high-pressure in-between, delivering a mostly dry and hot climate to India with patchy rains for China while Northern China was quite hot.

An amplified high-pressure ridge has emerged in Brazil triggering an expansive heatwave in which much of the nation is exposed to >100F risk. The super-hot weather is likely to last for a while as the high-pressure ridge holds into October. Dry weather is focused on central and northern Brazil during the hot weather pattern.

A semi-permanent summertime high-pressure ridge in the vicinity of the New Zealand marine heatwave much of the past 10 years is likely to regenerate during summer 2023-24. Proposed is an added climate diagnostic supporting an anomalous dry and hot summer 2023-24 climate pattern across Australia causing a major drought.

The latest 15-day upper air forecast for the southern hemisphere (by GFS) reveals an amplifying titanic upper-level high pressure ridge developing southwest of South America. Previously, the 2020-23 semi-permanent Amundsen Sea upper trough was “locked-in” the previous 30+ days and responsible in part for a wet pattern for much of Chile, Argentina, and Brazil. The pattern is about to reverse.