Spaceweather.

GEOMAGNETIC FORECAST: On Jan. 22nd, a coronal mass ejection (CME) will pass close to Earth and might deliver a glancing blow to our planet's magnetic field. Polar geomagnetic unrest is expected when the storm cloud arrives, bringing bright Arctic auroras.

BIG SOLAR FLARE: Sunspot AR2929 erupted again on Jan. 20th (06:01 UTC), producing a powerful M5.5-class solar flare.

During the flare, a pulse of X-rays ionized the top of Earth's atmosphere, causing a shortwave radio blackout around the Indian Ocean. Aviators, mariners, and ham radio operators in the area may have noticed unusual propagation effects at frequencies below 30 MHz?

Graham (G4FUJ)

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