Type II radio emission detected at 05:59 UTC with estimated velocity of 947 km/s

A Type II solar radio emission was detected on October 6, 2026, beginning at 05:59 UTC. The estimated velocity of the emitting shock wave was measured at 947 km/s, according to an official alert from the Space Weather Prediction Center (SWPC) issued at 06:15 UTC.

Type II radio emissions are signatures of shock waves propagating through the solar corona and are often associated with energetic solar events such as coronal mass ejections (CMEs). These emissions may indicate the presence of a coronal shock with the potential to accelerate solar particles, resulting in possible impacts on high-frequency radio communications and space-based technologies. The estimated speed places this event in the faster range, but the SWPC reports did not confirm any Earth-directed CME associated with this event.

Reviewing solar activity preceding the emission, several C-class flares occurred in the hours leading up to the detection, specifically from Region 4549, with the last recorded flare peaking at 03:51 UTC and ending at 03:57 UTC. No major flares occurred immediately at or near the begin time of the Type II radio emission, suggesting only a possible loose temporal association with earlier activity from Region 4549.

According to the latest SWPC forecast, overall solar activity reached moderate levels, with active but generally low flare activity and no Earth-directed CMEs observed. Elevated solar wind speeds persisted due to a positive polarity coronal hole high-speed stream, and geomagnetic conditions ranged from quiet to active, with past periods reaching G1 (Minor) geomagnetic storm levels. For the coming days, solar, energetic particle, and solar wind activity are expected to gradually return to quieter levels.