Minor C7.0 solar flare erupts at 19:43 UTC on October 14, 2025

A minor C7.0 solar flare erupted at 19:43 UTC on October 14, 2025.

Today’s flares include a moderate M2.0 flare from AR 4246 at 00:41 UTC, another moderate M2.0 flare from AR 4248 at 12:47 UTC, and the remainder were C-class events including a C8.2 flare from AR 4246 at 13:23 UTC and multiple C-class flares through the day. The C7.0 flare at 19:43 UTC is not separately listed in the available event summaries, but is within the active period observed.

In 24 hours to 12:30 UTC on October 14, solar activity reached moderate levels, primarily due to M-class flare activity. AR 4246 showed significant growth and was the main source of recent solar flares. There are several CMEs under analysis for potential Earth-directed components.

There is a high chance for a few R1 – Minor to R2 – Moderate radio blackouts through October 16, with a slight chance for an isolated R3 – Strong event. Flare potential remains elevated due to active regions.

Active sunspot regions presently observed on the Earth-facing solar disk include AR 4246 (N22W30 – Beta-Gamma-Delta), AR 4247 (S12W64 – Beta), AR 4248 (N07E01 – Beta-Gamma-Delta), AR 4250 (N07E06 – Beta), AR 4251 (N19E26 – Alpha), AR 4252 (S13E51 – Alpha), and AR 4253 (S17W24 – Alpha).

Over the past 24 hours, the greater than 2 MeV electron flux reached high levels, peaking at 4 080 pfu. The greater than 10 MeV proton flux remained at background levels. High electron flux is expected to continue on October 14, with normal to moderate levels forecast for October 15–16. There is a slight chance for a greater than 10 MeV proton event exceeding S1 – Minor thresholds through October 16.

Solar wind parameters reflected a weakening influence from a negative polarity coronal hole high speed stream, with total field decreasing to 4–5 nT and solar wind speeds dropping below 600 km/s. Enhanced but gradually waning conditions are expected through October 14; additional solar wind enhancements are anticipated late on October 15 due to CME arrivals from October 11–12.

Geomagnetic field activity was quiet to active over the past 24 hours. Conditions may reach active levels with a chance for an early G1 – Minor storm period on October 14. Geomagnetic activity should trend quiet to unsettled until late on October 15, when CME-driven active conditions and likely G1 – Minor storming are possible on October 16.