Type II radio emission detected at 11:01 UTC with estimated velocity of 1618 km/s

A Type II solar radio emission was detected on October 3, 2025, beginning at 11:01 UTC. The emission had an estimated velocity of 1,618 km/s, as confirmed by the NOAA Space Weather Prediction Center’s alert issued at 12:14 UTC on the same day.

Type II radio emissions occur in association with eruptions on the sun and typically indicate that a coronal mass ejection (CME) is associated with a flare event. These emissions are important markers of shock waves propagating through the solar corona and can be indicative of significant solar disturbances.

Today’s Type II emission was observed alongside other solar activity, including an earlier M1.5 flare that peaked at 05:23 UTC from Region 4236, though the emission’s timing does not directly coincide with this flare. There is also a Type IV emission beginning at 11:12 UTC and a preceding radio noise storm, suggesting heightened solar activity in the hours leading up to the detection.

According to the latest forecast discussion, solar activity remained at moderate levels, with 10 active regions visible. The Type II and Type IV emissions, along with related field line movement likely originating just beyond the western limb, are being closely monitored.

A faint CME was observed earlier in the day, but given the source region, an Earth-directed component is considered unlikely.

Geomagnetic conditions are expected to remain unsettled to active, with G1 (Minor) storm conditions forecast to persist for several hours before returning to quieter levels.