GOES satellites measured a M1.2-class solar flare peaking at 2026-07-12T08:11:00Z (X-ray flux 1.2e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.2-class solar flare peaking at 2026-07-09T02:27:00Z (X-ray flux 1.2e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.6-class solar flare peaking at 2026-07-08T17:56:00Z (X-ray flux 1.6e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M4.0-class solar flare peaking at 2026-07-07T14:19:00Z (X-ray flux 4.0e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
