Southern Lights Forecast
for Ushuaia / Tierra del Fuego
Ushuaia / Tierra del Fuego, Argentina — about -45.5° geomagnetic latitude. Low geomagnetic latitude despite high map latitude — extreme storms needed. Saw aurora in May 2024 G5.
Can you see the aurora in Ushuaia / Tierra del Fuego?
Yes. From a dark site you need about Kp 8 for a faint glow low on the southern horizon, and roughly Kp 9 for bright aurora directly overhead. At -45.5° geomagnetic latitude this spot sits well outside the oval — it takes a major geomagnetic storm.
Over the last 12 months the planetary Kp peaked at the levels Ushuaia / Tierra del Fuego needs on the days shown — out of 365. Kp is a global index, so these are the odds the sky was active enough; you still need clear, dark skies here. In 94 years on record the strongest day hit Kp 9.
The full Kp archive, 1932 → today →When to go
The season runs late March to late September, when the nights are long and dark. You also need clear skies and a low moon — even a strong Kp is useless under cloud. Check tonight's live call above, then plan a night around the dark window, cloud and moon.
Nearby in South America
From the bookChasing PinkSeven winters of chasing the northern lights — ten chapters, free to read here.Start reading →