“Antarctic Radar Anomaly” Over Australia & NZ—What It Likely Is (and Isn’t)
Viral clips claiming a massive radar “wave” expanding from Antarctica over Australia and New Zealand are almost certainly showing artifacts in weather-radar imagery, not a literal energy front.
- This anomaly started at 00 UT on October 12 2025 with a big flash. Affecting New Zealand and Australia as far as the map allow me to see. This event has been Ongoing now for many hours.
National meteorological agencies document several mundane causes that create dramatic patterns: anomalous propagation (when temperature inversions bend the beam so it hits sea/ground and bounces back like rain), sun-angle interference at sunrise/sunset that draws rays/lines from many radars at once, and general clutter or processing glitches that paint rings centered on individual radar sites. These effects are well known to the Bureau of Meteorology (Australia) and MetService (NZ) and are explained on their public radar FAQ pages.
Why the timing confuses people: there is unusual Antarctic activity right now—sudden stratospheric warming and perturbations of the polar vortex—which can disrupt Southern Hemisphere weather for weeks or months. That’s real meteorology, but it doesn’t generate a single expanding “radar blob.” Instead, it shifts wind patterns and storm tracks; the “ring” images come from how radars see (and sometimes mis-see) the atmosphere near each antenna.
Quick ways to sanity-check future clips: (1) if the pattern is perfectly circular and centered on multiple known radar sites, think interference/clutter; (2) if straight spokes all point east at sunrise or west at sunset across many radars, think solar interference; (3) if the “feature” vanishes on satellite imagery while persisting on radar, it’s not a real weather system; and (4) if one odd shape appears near defense areas, it may be non-weather interference (this has happened before).
Bottom line: striking visuals don’t equal a new Antarctic phenomenon. The best explanation is ordinary radar physics during an extraordinary weather season—artifacts on the screen, not a mysterious wave rolling out of Antarctica.
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@1TheBrutalTruth1 Oct 2025 Copyright Disclaimer under Section 107 of the Copyright Act of 1976: Allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education, and research.
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