A major long-duration solar flare measuring X1.7 erupted from Active Region 4274 at 07:35 UTC on November 9, 2025. The event started at 07:01 and ended at 07:55 UTC. The region is located at the center of the solar disk, making Earth-directed CMEs very likely.

A Type II Radio Emission, with an estimated velocity of 804 km/s, and a Type IV emission were associated with the event, indicating a strong coronal mass ejection (CME) was produced during the event.

Additionally, a 10cm Radio Burst lasting 25 minutes and with a peak flux of 25 minutes was detected from 07:10 to 07:35 UTC. A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background.

This can indicate significant radio noise associated with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers, including radar, GPS, and satellite communications.

The region is directly facing Earth, making an Earth-directed CME from this event very likely. It has a ‘beta-gamma-delta’ magnetic configuration and is capable of producing more major eruptions on the Sun. Earth-directed CMEs from this region are possible in the days ahead.

Radio frequencies were forecast to be most degraded over the Indian Ocean.

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