Argentina — Antarctic air holding south while the north warms

ACTIVE · September 17, 2026 · NO. 0917

THE STORM

Patagonian snow ongoing over the Santa Cruz, Chubut, Río Negro and Neuquén plateaus at 15 to 60 cm with minima near −10 °C, while the north warms to a Friday Sep-18 peak — about 31 °C in the north-west and about 23 °C at Buenos Aires. One country, both seasons, on the same morning.

THE RECORD

12 turning points on record since Jul 6 — the 8 most recent shown.

Sep 16building → peak · became confirmed

Sep 15active → building

Sep 13▽ slipped down the board

Sep 12▽ slipped down the board

Sep 11↑ became confirmed

Sep 8building → active

Aug 28easing → building · became confirmed

Aug 27▽ slipped down the board

WHO IT TOUCHES

Agricultureharvest and livestock decisions on five continents, and one of them can be read off a published schedule

Energycooling load in one hemisphere, heating load in the other, and a hydropower release running to a published plan

CONNECTED

The southern hemisphere's early-spring cold tap, running in two places at once — Antarctic air holding 15 to 60 cm of snow on the Patagonian plateaus while a cut-off low puts Orange level 6 on the KwaZulu-Natal coast and snow on the southern Drakensberg.