X5.1 Solar Flare from NOAA AR14274 Sparks G4–G5 Space‑Weather Event; ~1,500 km/s CME Threatens Satellites, GNSS and Aviation

On 11 November 2025 an X5.1‑class flare from NOAA Active Region 14274 peaked at 10:04 UTC and launched a coronal mass ejection estimated at ~1,500 km/s. The resulting G4–G5 geomagnetic storm is affecting satellite communications, GNSS and power systems; ESA is actively monitoring.

Discovered 2025-11-11T22:19:16.302941-08:00 | 2025-11-11T22:19:16.302941-08:00

Briefing

What Hype is tracking

  • The flare peaked at 10:04 UTC on Nov 11 and produced a CME estimated at ~1,500 km/s; storm levels have surged into G4–G5 with solar‑wind blasts exceeding 900 km/s — metrics tied to satellite, GNSS and grid risk. (See the X5.1‑class eruption from AR4274: https://hype.aero/?story=44649e42-416a-446c-8419-aa3d504063c5)
  • Operators are already reporting disruptions to satellite links, GNSS accuracy and HF radio; previous X‑class events produced radio blackouts across Africa and Europe and widespread auroras. (Context on operational impacts and preparedness: https://hype.aero/?story=cb23bbfa-aa8d-4189-8583-3aaaec9e282a and ESA simulation requirement: https://hype.aero/?story=39d689d2-0f77-4129-bc71-c40dc12ecdb9)
  • Storms can arrive sooner or be more intense than forecasts; monitor for satellite anomalies, GNSS degradation and HF interruptions that can affect polar and long‑haul flight navigation and spacecraft command/telemetry. (See NOAA's early‑arrival warning: https://hype.aero/?story=c4b2d27a-3f1b-428a-92f1-556784e9249c)

Reported By

meteorologicaltechnologyinternational.com Space Daily SpaceWatch Global ndtv.com indiatoday.in raumfahrer.net
Sources Tracked
10
First Seen
2025-11-11T22:19:16.302941-08:00
Latest Update
2025-11-14T01:54:26.759452-08:00
Coverage
Space

Sources

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