GOES satellites measured a M1.1-class solar flare peaking at 2026-07-27T02:43:00Z (X-ray flux 1.1e-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 M1.5-class solar flare peaking at 2026-07-26T15:26:00Z (X-ray flux 1.5e-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.
Planetary Kp index has reached 5.3, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
GOES satellites measured a M3.5-class solar flare peaking at 2026-07-22T06:34:00Z (X-ray flux 3.5e-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 M1.9-class solar flare peaking at 2026-07-21T17:27:00Z (X-ray flux 1.9e-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 M3.5-class solar flare peaking at 2026-07-20T22:25:00Z (X-ray flux 3.5e-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 M2.5-class solar flare peaking at 2026-07-20T14:36:00Z (X-ray flux 2.5e-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 2026-07-12T08:11:00Z (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.
